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Commit Graph

6562 Commits

Author SHA1 Message Date
Keshava Munegowda
6e3d4bec6b omap:usb: add regulator support for EHCI
in case of ehci phy mode; regulator of phy
should be enabled before initializing the
usbhs core driver.

Signed-off-by: Keshava Munegowda <keshava_mgowda@ti.com>
Tested-by: Steve Calfee <stevecalfee@gmail.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
2011-05-02 15:29:26 +03:00
Jarkko Nikula
cdefce1695 usb: musb: gadget: Fix out-of-sync runtime pm calls
If cable is not connected to peripheral only board when initializing the
gadget driver, then runtime pm calls are out-of-sync and the musb cannot
idle with omap2430.c. This was noted on Nokia N900 where musb prevented the
CPU to be able to enter deeper retention idle state.

This was working in 2.6.38 before runtime pm conversions but there musb
smart standby/idle modes were configured statically where they are now
updated runtime depending on use and cable status.

Reason for out-of-sync is that runtime pm is activated in function
musb_gadget.c: usb_gadget_probe_driver but suspended only in OTG mode if
cable is not connected when initializing. In peripheral only mode this leads
to out-of-sync runtime pm since runtime pm remain active and is activated
another time in omap2430.c: musb_otg_notifications for VBUS Connect event
and thus cannot suspend for VBUS Disconnect event since the use count remains
active.

Fix this by moving cable status check and pm_runtime_put call in
usb_gadget_probe_driver out of is_otg_enabled block.

Signed-off-by: Jarkko Nikula <jhnikula@gmail.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
2011-05-02 12:34:33 +03:00
Jarkko Nikula
383cf4e8d4 usb: musb: omap2430: Fix retention idle on musb peripheral only boards
Recent runtime pm and hwmod conversions for 2.6.39 broke the musb peripheral
mode OMAP retention idle on boards where the board mode in struct
musb_hdrc_platform_data is set to MUSB_PERIPHERAL.

These conversions changed the way how the OTG_SYSCONFIG register is
configured and used in runtime. Before 2.6.39 smart standby/idle modes were
activated statically in OTG_SYSCONFIG. Those modes allow that the musb is
able to idle when peripheral device is not connected to host.

In 2.6.39 the OTG_SYSCONFIG is updated runtime depending on VBUS status.
No standby/idle modes are used when device is connected and force
standby/idle when disconnected.

Unfortunately VBUS disconnect event that handles the disconnect case lets
the peripheral musb to idle only when board mode is MUSB_OTG. Fix this by
checking the peripheral mode also.

Signed-off-by: Jarkko Nikula <jhnikula@gmail.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
2011-05-02 12:34:32 +03:00
Christoph Hellwig
05d1091fd9 [SCSI] usb-storage: do not increment cmd->serial_number
The isd200 sub-driver increments the command serial number despite not
using it at all in it's routine for sending internal scsi commands.
Remove the increment to prepare for removing the serial_number field.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2011-05-01 10:23:09 -05:00
Ben Hutchings
7fc2a61638 xhci-hcd: Include <linux/slab.h> in xhci-pci.c
Commit b02d0ed677 ('xhci: Change
hcd_priv into a pointer') added calls to kzalloc() and kfree() in
xhci-pci.c.  On most architectures <linux/slab.h> is indirectly
included, but on some it is not.

Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Cc: Sarah Sharp <sarah.a.sharp@linux.intel.com>,
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-04-29 17:33:12 -07:00
Michal Nazarewicz
643de6240b usb: core: Change usb_create_sysfs_intf_files()' return type to void
The usb_create_sysfs_intf_files() function always returned zero even
if it failed to create sysfs fails.  Since this is a desired behaviour
there is no need to return return code at all.  This commit changes
function's return type (form int) to void.

Signed-off-by: Michal Nazarewicz <mina86@mina86.com>
Cc: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-04-29 17:24:38 -07:00
Alan Stern
869410f82c USB: add queued-unlinks test case to usbtest driver
This patch (as1452b) adds a new test case to the usbtest driver.  Test
24 exercises the unlink-from-queue pathways in the host.  It queues a
user-specified number of bulk-OUT URBs of user-specified size, unlinks
the fourth- and second-from-last URBs in the queue, and then waits to
see if all the URBs complete in the expected way (except of course
that the unlinked URBs might complete normally, if they weren't
unlinked soon enough).

This new test has confirmed the existence of a bug in the ehci-hcd
driver, to be fixed by a separate patch.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-04-29 17:24:38 -07:00
Jim Lin
1f594b64a4 USB: ehci: tegra: fix USB1 port reset issue
Tegra USB1 port needs to issue Port Reset twice internally, otherwise it
fails to enumerate devices attached to it

Signed-off-by: Jim Lin <jilin@nvidia.com>
Signed-off-by: Olof Johansson <olofj@chromium.org>
[ squash two patches into one and minor style cleanups ]
Signed-off-by: Mike Rapoport <mike@compulab.co.il>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-04-29 17:24:37 -07:00
Jingoo Han
3c86c07baa USB: ohci-s3c2410: use resource_size()
This patch uses the resource_size help function instead of
manually calculating the resource size. It can reduce the chance
of introducing off-by-one errors.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-04-29 17:24:37 -07:00
Jingoo Han
e7f84331c2 USB: ohci-s3c2410: use __devinit and __devexit macros for probe and remove
The __devinit and __devexit macros were added to probe and remove
functions. The macros move the probe and remove functions to the
devinit and devexit sections.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-04-29 17:24:36 -07:00
Michal Nazarewicz
fd4477b09e usb: gadget: storage_common: use kstrto*() [bug fix]
This commit fixes an embarrassing bug in the "storage_common:
use kstrto*()" patch which caused fsg_store_ro() to return
zero instead of the length of the consumed buffer.

Signed-off-by: Michal Nazarewicz <mina86@mina86.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-04-29 17:24:36 -07:00
Sebastian Andrzej Siewior
865835fa44 usb/dummy_hcd: don't probe for udc if hcd failed
the_controller is allocated in dummy_hcd_probe() and is NULL if the
allocation failed. The probe function of the udc driver is dereferencing
this pointer and fault.
Alan Stern suggested to abort the dummy_hcd driver probing so the module
is not loaded. The is abort-on-error has been also added to the udc
driver.

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-04-29 17:24:36 -07:00
Sebastian Andrzej Siewior
1d15ee4cd7 usb/hcd: don't return 0 on error in usb_add_hcd()
If USB type detections fails, we run into default and return 0.

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-04-29 17:24:35 -07:00
Kuninori Morimoto
b002ff6e26 usb: renesas_usbhs: add autonomy mode
Current renesas_usbhs was designed to save power when USB is not connected.
And it assumed platform uses callback to notify connection/disconnection
by external interrupt.

But some SuperH / platform board doesn't have such feature.

This patch adds autonomy mode which detect USB connection/disconnection
by internal interrupt.
But power will be always ON when autonomy mode is selected.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-04-29 17:24:35 -07:00
Kuninori Morimoto
bc57381e63 usb: renesas_usbhs: use delayed_work instead of work_struct
This delay is used to overjump debounce.

And, this patch also move usbhsc_drvcllbck_notify_hotplug to global,
because it will be called from other files.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-04-29 17:24:34 -07:00
Kuninori Morimoto
5ea68d541d usb: renesas_usbhs: prevent NULL pointer crash
usbhs_status_get_each_irq/usbhs_irq_callback_update might be called
with mod == NULL

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-04-29 17:24:34 -07:00
Kuninori Morimoto
6e267da8f1 usb: renesas_usbhs: add power control function
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-04-29 17:24:34 -07:00
Kuninori Morimoto
206dcc2cfe usb: renesas_usbhs: move pdev_to_priv to global
usbhs_pdev_to_priv function will be used in other files.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-04-29 17:24:33 -07:00
Kuninori Morimoto
f429ea3f34 usb: renesas_usbhs: add error reason for usbhs_pipe_malloc
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-04-29 17:24:33 -07:00
Kuninori Morimoto
af32fe5113 usb: renesas_usbhs: remove callback when module removed.
The callback function which is called from platform must be removed
if module removed.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-04-29 17:24:32 -07:00
Kuninori Morimoto
9a28b7bd4f usb: renesas_usbhs: return error if wrong recip request
There are some USB Host which doesn't notice disconnection at once.
And it might try some request after reconnection with old settings.
Current renesas_usbhs will crash in such case.
This patch prevent this issue.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-04-29 17:24:32 -07:00
Kuninori Morimoto
cb96632c18 usb: renesas_usbhs: modify spinlock method
Current renesas_usbhs driver was using spin_trylock to avoid
dead lock / nest lock.
But acording to CONFIG_DEBUG_SPINLOCK, it is BUG under UP environment.
This patch add usbhsg_trylock to avoid this issue.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-04-29 17:24:32 -07:00
Kuninori Morimoto
409ba9e7c0 usb: renesas_usbhs: don't re-allocation pipe buffer
Because pipe buffer allocation is very picky and difficult,
current renesas_usbhs driver is not caring pipe re-allocation.

In this situation, driver will create new pipe without caring old pipe
if "usbhsg_ep_enable" is called after "usbhsg_ep_disable" on current driver.
This mean the limited pipe and buffer will be used as waste.
But it is possible to re-use same buffer to same pipe.

By this patch, driver will initialize pipe when it detected new connection or
new gadget, and doesn't try re-allocation for same pipe in above case.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-04-29 17:24:31 -07:00
Kuninori Morimoto
45e13e6e0a usb: renesas_usbhs: modify fifo clear timing
Pipe buffer should be cleaned before using it,
but should NOT be cleaned in pipe "prepare" function.
Because the pipe might be working in such timing.
This patch fixup this issue.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-04-29 17:24:31 -07:00
Jonas Andersson
a0c25c2050 USB: g_printer required set interface request
g_printer reqiured "set interface" request from host. Not all hosts send
this request.  This patch enable the interface when it get "set
configuration" request from host.

Signed-off-by: Jonas Andersson <jonas@microbit.se>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-04-29 17:24:31 -07:00
Sven Schnelle
a8779ee94e USB: dbpg gadget: dont mask out direction bit
Stripping the direction bit off will produce an
invalid descriptor.

Signed-off-by: Sven Schnelle <svens@stackframe.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-04-29 17:24:30 -07:00
Sven Schnelle
83b7201993 USB: dbgp gadget: set MaxpacketSize0
The current code doesn't set it, so linux complains about
it when connected, and ignores the device:

[104611.068082] usb 1-5: new high speed USB device using ehci_hcd and address 127
[104611.088368] usb 1-5: Invalid ep0 maxpacket: 0

Signed-off-by: Sven Schnelle <svens@stackframe.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-04-29 17:24:30 -07:00
Sven Schnelle
1744020ceb USB: dbgp gadget: fix return value of dbgp_setup
Current code returns 0 even if it can't handle the request.
This leads to timeouts when an unhandled request is sent:

Bus 001 Device 003: ID 0525:c0de Netchip Technology, Inc.
Device Descriptor:
[..]
can't get device qualifier: Connection timed out
[..]

change the code to return EOPNOTSUPP in such cases.

Signed-off-by: Sven Schnelle <svens@stackframe.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-04-29 17:24:30 -07:00
Kuninori Morimoto
25a73c6ce7 usb: renesas_usbhs: Driver is depend on SuperH
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-04-29 17:24:29 -07:00
Kuninori Morimoto
c89d2613b8 usb: renesas_usbhs: fixup cast warning
This patch fixup cast warning on 64 bit compiler

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Reported-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-04-29 17:24:29 -07:00
Marius B. Kotsbak
15b2f3204a Bind only modem AT command endpoint to option module.
Network interface is handled by upcoming gt_b3730 module.

Removed "GT-B3710" from comment, it is another modem with another USB ID.

Signed-off-by: Marius B. Kotsbak <marius@kotsbak.com>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-04-29 17:05:06 -07:00
Oliver Neukum
d771d8aa37 USB: cdc-wdm: reset handling according to new requirements
This patch
- ensures no IO takes place during resets
- reports resets to user space

Signed-off-by: Oliver Neukum <oneukum@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-04-29 17:04:40 -07:00
Hermann Kneissel
b4026c4584 USB: gamin_gps: Fix for data transfer problems in native mode
This patch fixes a problem where data received from the gps is sometimes
transferred incompletely to the serial port. If used in native mode now
all data received via the bulk queue will be forwarded to the serial
port.

Signed-off-by: Hermann Kneissel <herkne@gmx.de>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-04-29 17:03:59 -07:00
Benedek László
37909fe588 USB: serial: ftdi_sio: adding support for TavIR STK500
Adding support for the TavIR STK500 (id 0403:FA33)
Atmel AVR programmer device based on FTDI FT232RL.

Signed-off-by: Benedek László <benedekl@gmail.com>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-04-29 16:45:22 -07:00
Elizabeth Jennifer Myers
3938a0b32d USB: moto_modem: Add USB identifier for the Motorola VE240.
Tested on my phone, the ttyUSB device is created and is fully
functional.

Signed-off-by: Elizabeth Jennifer Myers <elizabeth@sporksirc.net>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-04-29 16:45:21 -07:00
Craig Shelley
4eff0b40a7 USB: CP210x Add 4 Device IDs for AC-Services Devices
This patch adds 4 device IDs for CP2102 based devices manufactured by
AC-Services. See http://www.ac-services.eu for further info.

Signed-off-by: Craig Shelley <craig@microtron.org.uk>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-04-29 16:45:20 -07:00
Joe Perches
85ee7a1d39 treewide: cleanup continuations and remove logging message whitespace
Using C line continuation inside format strings is error prone.
Clean up the unintended whitespace introduced by misuse of \.
Neaten correctly used line continations as well for consistency.

drivers/scsi/arcmsr/arcmsr_hba.c has these errors as well,
but arcmsr needs a lot more work and the driver should likely be
moved to staging instead.

Signed-off-by: Joe Perches <joe@perches.com>
Acked-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2011-04-26 10:24:37 +02:00
Greg Kroah-Hartman
50ee9339c7 Merge 2.6.39-rc4 into usb-next
This is needed to help resolve some xhci issues and other minor
differences.

Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-04-19 05:50:38 -07:00
Greg Kroah-Hartman
98346f7db0 Revert "usb: usb_storage: do not align length of request for CBW to maxp size"
This reverts commit 806e8f8fcc.

To quote Alan Stern:
	The necessity for this patch has been under discussion.

	It turns out the UDC that Mian has been working on and Felipe's
	UDC have contradictory requirements.  Mian's UDC driver wants a
	bulk-OUT transfer length to be shorter than the maxpacket size
	if a short packet is expected, whereas Felipe's UDC hardware
	always needs bulk-OUT transfer lengths to be evenly divisible by
	the maxpacket size.

	Mian has agreed to go back over the driver to resolve this
	conflict.  This means we probably will not want this patch after
	all.  (In fact, we may ultimately decide to change the gadget
	framework to require that bulk-OUT transfer lengths _always_ be
	divisible by the maxpacket size -- only the g_file_storage and
	g_mass_storage gadgets would need to be changed.)

Cc: Mian Yousaf Kaukab <mian.yousaf.kaukab@stericsson.com>
Cc: Michal Nazarewicz <mina86@mina86.com>
Cc: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-04-14 13:42:46 -07:00
Greg Kroah-Hartman
753d8534cc Revert "USB: isp1760-hcd: move imask clear after pending work is done"
This reverts commit 5808544690.

To quote Richard:
	I don't think this should be mainlined. It was a
	misunderstanding on my part.  If you see all the other hdc
	drivers in the same location, they all do the same thing (i.e.
	clear the interrupt status first, then do the work) that
	"glitch" I think I saw was actually two back-to-back
	interrupts.

	Sebastian (the original author of isp1760) explained it to me a
	few days after my submission.

	sorry for the confusion

Cc: Richard Retanubun <RichardRetanubun@ruggedcom.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-04-14 13:37:07 -07:00
Michal Nazarewicz
db8fa2852e usb: gadget: storage_common: use kstrto*()
This commit replaces the usage of strict_strtoul() (which
became deprecated after commit 33ee3b2e) with kstrtouint().

Signed-off-by: Michal Nazarewicz <mina86@mina86.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-04-13 17:02:11 -07:00
Gabor Juhos
90e6ca5cda USB: ohci: add bus glue for the Atheros AR71XX/AR7240 SoCs
The Atheros AR71XX/AR7240 SoCs have a built-in OHCI controller.
This patch adds the necessary glue code to make the generic OHCI
driver usable for them.

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Signed-off-by: Imre Kaloz <kaloz@openwrt.org>
Cc: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-04-13 16:58:19 -07:00
Gabor Juhos
2f7ac6c199 USB: ehci: add workaround for Synopsys HC bug
A Synopsys USB core used in various SoCs has a bug which might cause
that the host controller not issuing ping.

When software uses the Doorbell mechanism to remove queue heads, the
host controller still has references to the removed queue head even
after indicating an Interrupt on Async Advance. This happens if the last
executed queue head's Next Link queue head is removed.

Consequences of the defect:
The Host controller fetches the removed queue head, using memory that
would otherwise be deallocated.This results in incorrect transactions on
both the USB and system memory. This may result in undefined behavior.

Workarounds:

1) If no queue head is active (no Status field's Active bit is set)
after removing the queue heads, the software can write one of the valid
queue head addresses to the ASYNCLISTADDR register and deallocate the
removed queue head's memory after 2 microframes.

If one or more of the queue heads is active (the Active bit is set in
the Status field) after removing the queue heads, the software can delay
memory deallocation after time X, where X is the time required for the
Host Controller to go through all the queue heads once. X varies with
the number of queue heads and the time required to process periodic
transactions: if more periodic transactions must be performed, the Host
Controller has less time to process asynchronous transaction processing.

2) Do not use the Doorbell mechanism to remove the queue heads. Disable
the Asynchronous Schedule Enable bit instead.

The bug has been discussed on the linux-usb-devel mailing-list
four years ago, the original thread can be found here:
http://www.mail-archive.com/linux-usb-devel@lists.sourceforge.net/msg45345.html

This patch implements the first workaround as suggested by David Brownell.

The built-in USB host controller of the Atheros AR7130/AR7141/AR7161 SoCs
requires this to work properly.

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-04-13 16:58:18 -07:00
Gabor Juhos
502fa84195 USB: ehci: add bus glue for the Atheros AR71XX/AR724X/AR91XX SoCs
The Atheros AR71XX/AR91XX SoCs have a built-in EHCI controller.
This patch adds the necessary glue code to make the generic EHCI
driver usable for them.

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Signed-off-by: Imre Kaloz <kaloz@openwrt.org>
Cc: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-04-13 16:57:44 -07:00
Andiry Xu
c41136b05d xHCI: Implement AMD PLL quirk
This patch disable the optional PM feature inside the Hudson3 platform under
the following conditions:

1. If an isochronous device is connected to xHCI port and is active;
2. Optional PM feature that powers down the internal Bus PLL when the link is
   in low power state is enabled.

The PM feature needs to be disabled to eliminate PLL startup delays when the
link comes out of low power state. The performance of DMA data transfer could
be impacted if system delay were encountered and in addition to the PLL start
up delays. Disabling the PM would leave room for unpredictable system delays
in order to guarantee uninterrupted data transfer to isochronous audio or
video stream devices that require time sensitive information. If data in an
audio/video stream was interrupted then erratic audio or video performance
may be encountered.

AMD PLL quirk is already implemented in OHCI/EHCI driver. After moving the
quirk code to pci-quirks.c and export them, xHCI driver can call it directly
without having the quirk implementation in itself.

Signed-off-by: Andiry Xu <andiry.xu@amd.com>
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
2011-04-13 16:57:37 -07:00
Sarah Sharp
fedd383e33 xhci: Tell USB core both roothubs lost power.
On a resume, when the power is lost during hibernate, the USB core will
call hub_reset_resume for the xHCI USB 2.0 roothub, but not for the USB
3.0 roothub:

[  164.748310] usb usb1: root hub lost power or was reset
[  164.748353] usb usb2: root hub lost power or was reset
[  164.748487] usb usb3: root hub lost power or was reset
[  164.748488] xhci_hcd 0000:01:00.0: Stop HCD
...
[  164.870039] hub 4-0:1.0: hub_resume
...
[  164.870054] hub 3-0:1.0: hub_reset_resume

This causes issues later, because the USB core assumes the USB 3.0 hub
attached to the USB 3.0 roothub is still active.  It attempts to queue a
control URB for the external hub, which fails because all the device
slot contexts were released when the USB 3.0 roothub lost power:

[  164.980044] hub 4-1:1.0: hub_resume
[  164.980047] xhci_hcd 0000:01:00.0: Get port status returned 0x10101
[  164.980049] xHCI xhci_urb_enqueue called with unaddressed device
[  164.980053] hub 3-0:1.0: port 1: status 0101 change 0001
[  164.980056] hub 4-1:1.0: hub_port_status failed (err = -22)
[  164.980060] xhci_hcd 0000:01:00.0: `MEM_WRITE_DWORD(3'b000, 32'hffffc90008948440, 32'h202e1, 4'hf);
[  164.980062] xHCI xhci_urb_enqueue called with unaddressed device
[  164.980066] xhci_hcd 0000:01:00.0: clear port connect change, actual port 0 status  = 0x2e1
[  164.980069] hub 4-1:1.0: hub_port_status failed (err = -22)
[  164.980072] xhci_hcd 0000:01:00.0: get port status, actual port 1 status  = 0x2a0
[  164.980074] xHCI xhci_urb_enqueue called with unaddressed device
[  164.980077] xhci_hcd 0000:01:00.0: Get port status returned 0x100
[  164.980079] hub 4-1:1.0: hub_port_status failed (err = -22)
[  164.980082] xHCI xhci_urb_enqueue called with unaddressed device
[  164.980085] hub 4-1:1.0: hub_port_status failed (err = -22)
[  164.980088] hub 4-1:1.0: port 4: status 0000 change 0000
[  164.980091] xHCI xhci_urb_enqueue called with unaddressed device
[  164.980094] hub 4-1:1.0: activate --> -22
[  164.980113] xHCI xhci_urb_enqueue called with unaddressed device
[  164.980117] hub 4-1:1.0: hub_port_status failed (err = -22)
[  164.980119] xHCI xhci_urb_enqueue called with unaddressed device
[  164.980123] hub 4-1:1.0: can't resume port 4, status -22
[  164.980126] hub 4-1:1.0: port 4 status ffff.ffff after resume, -22
[  164.980129] usb 4-1.4: can't resume, status -22
[  164.980131] hub 4-1:1.0: logical disconnect on port 4

This causes issues when a USB 3.0 hard drive is attached to the external
USB 3.0 hub when the system is hibernated:

[ 6249.849653] sd 8:0:0:0: [sdb] Unhandled error code
[ 6249.849659] sd 8:0:0:0: [sdb]  Result: hostbyte=DID_ERROR driverbyte=DRIVER_OK
[ 6249.849663] sd 8:0:0:0: [sdb] CDB: Read(10): 28 00 00 00 2a 08 00 00 02 00
[ 6249.849671] end_request: I/O error, dev sdb, sector 10760

Make sure to inform the USB core that *both* xHCI roothubs lost power.

Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
2011-04-13 16:57:36 -07:00
Andiry Xu
a8f08d86db usbcore: Bug fix: system can't suspend with USB3.0 device connected to USB3.0 hub
This patch clear PORT_POWER when suspend a USB3.0 device behind a USB3.0
external hub, so the system can suspend and resume.

Note USB3.0 device may not work after system resume and this is a temporary
workaround. The correct fix will be in future patches.

Signed-off-by: Andiry Xu <andiry.xu@amd.com>
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
2011-04-13 16:57:34 -07:00
Matthew Wilcox
b214f191d9 USB: Fix unplug of device with active streams
If I unplug a device while the UAS driver is loaded, I get an oops
in usb_free_streams().  This is because usb_unbind_interface() calls
usb_disable_interface() which calls usb_disable_endpoint() which sets
ep_out and ep_in to NULL.  Then the UAS driver calls usb_pipe_endpoint()
which returns a NULL pointer and passes an array of NULL pointers to
usb_free_streams().

I think the correct fix for this is to check for the NULL pointer
in usb_free_streams() rather than making the driver check for this
situation.  My original patch for this checked for dev->state ==
USB_STATE_NOTATTACHED, but the call to usb_disable_interface() is
conditional, so not all drivers would want this check.

Note from Sarah Sharp: This patch does avoid a potential dereference,
but the real fix (which will be implemented later) is to set the
.soft_unbind flag in the usb_driver structure for the UAS driver, and
all drivers that allocate streams.  The driver should free any streams
when it is unbound from the interface.  This avoids leaking stream rings
in the xHCI driver when usb_disable_interface() is called.

This should be queued for stable trees back to 2.6.35.

Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Cc: stable@kernel.org
2011-04-13 16:57:33 -07:00
Dmitry Torokhov
2dea75d96a USB: xhci - also free streams when resetting devices
Currently, when resetting a device, xHCI driver disables all but one
endpoints and frees their rings, but leaves alone any streams that
might have been allocated. Later, when users try to free allocated
streams, we oops in xhci_setup_no_streams_ep_input_ctx() because
ep->ring is NULL.

Let's free not only rings but also stream data as well, so that
calling free_streams() on a device that was reset will be safe.

This should be queued for stable trees back to 2.6.35.

Reviewed-by: Micah Elizabeth Scott <micah@vmware.com>
Signed-off-by: Dmitry Torokhov <dtor@vmware.com>
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Cc: stable@kernel.org
2011-04-13 16:57:31 -07:00
Joonyoung Shim
1bcc5aa87f USB: Add initial S5P EHCI driver
This patch adds host USB high speed driver for samsung S5P series. This
is initial driver and we need additional implementation to support some
functions like power management.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-04-13 16:50:52 -07:00
Johan Hovold
b750106baf Revert "USB: sam-ba: add driver for Atmel SAM Boot Assistant (SAM-BA)"
This reverts commit 90593899de.

SAM-BA devices identify themselves CDC-ACM devices and should be using
the cdc-acm driver.

Since commit 5b239f0aeb (USB: cdc-acm: Add pseudo
modem without AT command capabilities) cdc-acm also binds to them.

Note that the Atmel SAM-BA tools expect to use a USB-serial driver and thus
require a symlink from /dev/ttyACMn to some /dev/ttyUSBm (with m < 30) to be
able to select the device. This is simply a UI-issue that should be
fixed by Atmel.

Tested with the SAM-BA 2.10 tools and an Atmel at91sam9260-ek.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Cc: Sven Köhler <sven.koehler@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-04-13 16:48:25 -07:00
Matthias Kaehlcke
a87103a6d4 USB: twl4030-usb: Report correct vbus value for accessory charger adapters1
The twl4030-usb driver exports the status of VBUS as sysfs attribute.
In case an accessory charger adapter (ACA) is connected to the OTG
transceiver the attribute is always 'off', even when the charger
provides VBUS. Added a variable to keep track of the status of VBUS
and report it correctly

Signed-off-by: Matthias Kaehlcke <matthias.kaehlcke@tomtom.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-04-13 16:48:17 -07:00
Fabio Estevam
0b0cd6c81d USB: Mark ehci_adjust_port_wakeup_flags as __maybe_unused
Mark ehci_adjust_port_wakeup_flags as __maybe_unused to avoid the following
warning when building the ehci-mxc driver:

  CC      drivers/usb/host/ehci-hcd.o
drivers/usb/host/ehci-hub.c:130: warning: 'ehci_adjust_port_wakeup_flags' defined but not used

Current ehci-mxc driver implementation does not support suspend/resume.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-04-13 16:41:01 -07:00
Weiping Pan(潘卫平)
74d1dc8d8d usb: fix a typo in a comment
replace tranmitted with transmitted.

Signed-off-by: Weiping Pan(潘卫平) <panweiping3@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-04-13 16:41:00 -07:00
Randy Dunlap
84f6c3fb7e usb/otg: fix twl6030 macro
Fix warning caused by stray semi-colon at end of macro:

drivers/usb/otg/twl6030-usb.c:183: warning: ISO C90 forbids mixed declarations and code

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Cc: Hema HK <hemahk@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-04-13 16:41:00 -07:00
Roger Quadros
3c624d4962 usb: gadget: f_mass_storage: If 'ro'/'cdrom' specified, open file as read-only
If we don't need Write access then attempt to open backing file in Read Only
mode instead of bailing out too soon.

Signed-off-by: Roger Quadros <roger.quadros@nokia.com>
Acked-by: Michal Nazarewicz <mina86@mina86.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-04-13 16:40:59 -07:00
Roger Quadros
73ee4da994 usb: gadget: f_mass_storage: Fix Bulk-only RESET handling
The ep0 request tag was not recorded thus resulting in phase
problems while sending status/response in handle_execption() handler.
This was resulting in MSC compliance test failures with USBCV tool.

With this patch, the Bulk-Only Mass storage RESET request is
handled correctly and the MSC compliance tests pass.

Signed-off-by: Roger Quadros <roger.quadros@nokia.com>
Acked-by: Michal Nazarewicz <mina86@mina86.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-04-13 16:40:59 -07:00
Michal Marek
654d121ad8 usb: u132-hcd: Drop __TIME__ usage
The kernel already prints its build timestamp during boot, no need to
repeat it in random drivers and produce different object files each
time.

Cc: Tony Olech <tony.olech@elandigitalsystems.com>
Cc: linux-usb@vger.kernel.org
Signed-off-by: Michal Marek <mmarek@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-04-13 16:36:06 -07:00
Michal Marek
3482f00d01 usb: ftdi-elan: Drop __TIME__ usage
The kernel already prints its build timestamp during boot, no need to
repeat it in random drivers and produce different object files each
time.

Cc: Tony Olech <tony.olech@elandigitalsystems.com>
Cc: linux-usb@vger.kernel.org
Signed-off-by: Michal Marek <mmarek@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-04-13 16:36:06 -07:00
Alan Stern
99083f16f0 USB: UHCI: don't try to revive a dead controller
This patch (as1457) abandons the curious strategy of declaring a
controller dead following hibernation merely in order to reset and
then revive it.  The core no longer allow dead controllers to spring
back to life when the system resumes, so there's no reason to declare
a working controller temporarily dead.  Instead we do an explicit
reset.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-04-13 16:36:06 -07:00
Alan Stern
7d670a2ed7 USB: UHCI: remove uses of hcd->state
This patch (as1456) removes all uses of hcd->state from the uhci-hcd
driver, as part of the overall strategy to eliminate hcd->state
completely.  Now when a controller dies we call usb_hc_died()
directly, instead of relying on the core interrupt handler to see that
hcd->state has changed to HC_STATE_HALT and make the call for us.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-04-13 16:36:05 -07:00
Felipe Balbi
4661ffc91b usb: don't enter usb subdirectories directly
Instead, make we enter usb/ directory on all
needed cases and enter the subdirectories from
drivers/usb/Makefile.

Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-04-13 16:34:53 -07:00
Mike Frysinger
ad7c56f07e USB: sl811: add Kconfig option for ISOCHRONOUS mode
Some bluetooth dongles want ISO mode, and the limited support that the
sl811 offers today is sufficient.  So add a Kconfig option for people
to optionally get access to the partial functionality.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-04-13 16:26:12 -07:00
Alan Stern
ee81b3e086 USB: g_file_storage: don't send padding when stall=n
This patch (as1455) removes the extra padding sent by g_file_storage
and g_mass_storage when the gadget wants to send less data than
requested by the host and isn't allowed to halt the bulk-IN endpoint.

Although the Bulk-Only Transport specification requires the padding to
be present, it isn't truly needed since the transfer will be terminated
by a short packet anyway.  Furthermore, many existing devices don't
bother to send any padding.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Acked-By: Michal Nazarewicz <mina86@mina86.com>
CC: Roger Quadros <roger.quadros@nokia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-04-13 16:24:06 -07:00
Libor Pechacek
edf847decc USB: remove dead code from usb_deregister_dev()
The `name' variable is unused in usb_deregister_dev() since commit d6e5bcf
(devfs: Remove the mode field from usb_class_driver as it's no longer needed).

Signed-off-by: Libor Pechacek <lpechacek@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-04-13 16:24:05 -07:00
Mian Yousaf Kaukab
806e8f8fcc usb: usb_storage: do not align length of request for CBW to maxp size
Mass-storage and file-storage gadgets align the length to maximum-packet-size
when preparing the request to receive CBW. This is unnecessary and prevents the
controller driver from knowing that a short-packet is expected.

It is incorrect to set short_not_ok when preparing the request to receive CBW.
CBW will be a short-packet so short_not_ok must not be set.

This makes bh->bulk_out_intended_length unnecessary so it is also removed.

Signed-off-by: Mian Yousaf Kaukab <mian.yousaf.kaukab@stericsson.com>
Acked-by: Michal Nazarewicz <mina86@mina86.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-04-13 16:24:04 -07:00
Sarah Sharp
386139d7c8 xhci: Fix NULL pointer deref in handle_port_status()
When we get a port status change event, we need to figure out what type of
port it came from: a USB 3.0 port, or a USB 2.0/1.1 port.  We can't know
which usb_hcd to use until that point, so hcd will be NULL for part of the
function.  Unfortunately, if any of the sanity checks fail, we'll jump to
the cleanup label before hcd is set to a valid pointer, and then we'll
attempt to tell the USB core to kick the hcd, which is NULL.

Skip kicking the roothub if the sanity checks fail.

Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
2011-04-13 16:19:49 -07:00
Dmitry Torokhov
dfa49c4ad1 USB: xhci - fix math in xhci_get_endpoint_interval()
When parsing exponent-expressed intervals we subtract 1 from the
value and then expect it to match with original + 1, which is
highly unlikely, and we end with frequent spew:

	usb 3-4: ep 0x83 - rounding interval to 512 microframes

Also, parsing interval for fullspeed isochronous endpoints was
incorrect - according to USB spec they use exponent-based
intervals (but xHCI spec claims frame-based intervals). I trust
USB spec more, especially since USB core agrees with it.

This should be queued for stable kernels back to 2.6.31.

Reviewed-by: Micah Elizabeth Scott <micah@vmware.com>
Signed-off-by: Dmitry Torokhov <dtor@vmware.com>
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Cc: stable@kernel.org
2011-04-13 16:19:48 -07:00
Dmitry Torokhov
926008c938 USB: xhci: simplify logic of skipping missed isoc TDs
The logic of the handling Missed Service Error Events was pretty
confusing as we were checking the same condition several times.
In addition, it caused compiler warning since the compiler could
not figure out that event_trb is actually unused in case we are
skipping current TD.

Fix that by rearranging "skip" condition checks, and factor out
skip_isoc_td() so that it is called explicitly.

Signed-off-by: Dmitry Torokhov <dtor@vmware.com>
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
2011-04-13 16:19:48 -07:00
Dmitry Torokhov
575688e1e5 USB: xhci - remove excessive 'inline' markings
Remove 'inline' markings from file-local functions and let compiler
do its job and inline what makes sense for given architecture.

Signed-off-by: Dmitry Torokhov <dtor@vmware.com>
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
2011-04-13 16:19:47 -07:00
Dan Carpenter
22e0487047 USB: xhci: unsigned char never equals -1
There were some places that compared port_speed == -1 where port_speed
is a u8.  This doesn't work unless we cast the -1 to u8.  Some places
did it correctly.

Instead of using -1 directly, I've created a DUPLICATE_ENTRY define
which does the cast and is more descriptive as well.

Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
2011-04-13 16:19:47 -07:00
Dmitry Torokhov
5a6c2f3ff0 USB: xhci - fix unsafe macro definitions
Macro arguments used in expressions need to be enclosed in parenthesis
to avoid unpleasant surprises.

This should be queued for kernels back to 2.6.31

Signed-off-by: Dmitry Torokhov <dtor@vmware.com>
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Cc: stable@kernel.org
2011-04-13 16:19:46 -07:00
Johan Hovold
088c64f812 USB: cdc-acm: re-write read processing
Kill rx tasklet, which is no longer needed, and re-write read processing.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-04-13 16:18:34 -07:00
Johan Hovold
74f5e1babd USB: cdc-acm: clean up read urb allocation
Allocate read urbs and read buffers in the same loop during probe.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-04-13 16:18:33 -07:00
Johan Hovold
94d4c8919d USB: cdc-acm: clean up open error handling
No need to kill ctrl urb on errors as this is done later during close.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-04-13 16:18:33 -07:00
Johan Hovold
dab54c9f1e USB: cdc-acm: clean up rx_buflimit references
Clean up references to rx_buflimit.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-04-13 16:18:31 -07:00
Johan Hovold
6fb6b88464 USB: cdc-acm: remove unused drain-delay code
The drain-delay code is no longer used, so remove it.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-04-13 16:18:30 -07:00
Johan Hovold
3a42610812 USB: cdc-acm: remove superfluous prototype
Remove unnecessary acm_tty_chars_in_buffer prototype.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-04-13 16:18:29 -07:00
Johan Hovold
a2c7b9353e USB: cdc-acm: remove version information and changelog
Remove driver version and changelog which can be retrieved from git
history.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-04-13 16:18:29 -07:00
Johan Hovold
5e9e75f8bd USB: cdc-acm: use dev_vdbg in read/write paths
Replace dev_dbg with verbose dev_vdbg in read/write paths where
appropriate.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-04-13 16:18:28 -07:00
Johan Hovold
4fa4626cd4 USB: cdc-acm: clean up verbose debug
Clean up use of verbose debug.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-04-13 16:18:28 -07:00
Johan Hovold
a5cc7ef92f USB: cdc-acm: replace dbg macros with dev_dbg
Replace all remaining instances of dbg with dev_dbg.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-04-13 16:18:28 -07:00
Johan Hovold
1d9846e505 USB: cdc-acm: clean up dev_err and dev_dbg
Clean up some dev_err and dev_dbg messages and make sure that the
appropriate interface device is used for reporting consistently
throughout.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-04-13 16:18:27 -07:00
Johan Hovold
255ab56c5a USB: cdc-acm: use dev_err to report failed allocations
Upgrade out-of-memory dev_dbg to dev_err.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-04-13 16:18:27 -07:00
Johan Hovold
59d7fec7c6 USB: cdc-acm: add missing newlines to dev_dbg and dev_err
Add missing newline to two dev_dbg and dev_err messages.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-04-13 16:18:26 -07:00
Dmitry Torokhov
bce1a702ed USB: change the way we initialize format strings
Changing initialization from

	static const char *string = "blah";

to

	static const char string[] = "blah";

saves us one pointer per each string.

Signed-off-by: Dmitry Torokhov <dtor@vmware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-04-13 16:18:25 -07:00
Dmitry Torokhov
2868a2b1ba USB: fix formatting of SuperSpeed endpoints in /proc/bus/usb/devices
Isochronous and interrupt SuperSpeed endpoints use the same mechanisms
for decoding bInterval values as HighSpeed ones so adjust the code
accordingly.

Also bandwidth reservation for SuperSpeed matches highspeed, not
low/full speed.

Signed-off-by: Dmitry Torokhov <dtor@vmware.com>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-04-13 16:13:46 -07:00
Kuninori Morimoto
2f98382dcd usb: renesas_usbhs: Add Renesas USBHS Gadget
This patch add usb gadget code to SuperH USBHS.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-04-13 16:07:07 -07:00
Kuninori Morimoto
f1407d5c66 usb: renesas_usbhs: Add Renesas USBHS common code
Renesas SuperH has USBHS IP which can switch Host / Function.
This driver is designed so that Host / Function may dynamically change.
This patch add usb/renesas_usbhs and common code for SuperH USBHS.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-04-13 16:07:07 -07:00
Richard Retanubun
5808544690 USB: isp1760-hcd: move imask clear after pending work is done
This patch moves the HcInterrupt register write to clear the
pending interrupt to after the isr work is done, doing this removes
glitches in the irq line.

Signed-off-by: Richard Retanubun <richardretanubun@ruggedcom.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-04-13 15:57:19 -07:00
Valentin Longchamp
d834508e15 USB: fsl_qe_udc: send ZLP when zero flag and length % maxpacket == 0
The driver did not take the zero flag in the USB request. If the
request length is the same as the endpoint's maxpacket, an additional
ZLP with no data has to be transmitted.

The method used here is inspired to what is done in fsl_udc_core.c
(and pxa27x_udc.c and at91_udc.c) where this is supported.

There already was a discussion about this topic with people from
Keymile, and I propose here a better implementation:

http://thread.gmane.org/gmane.linux.usb.general/38951

Signed-off-by: Valentin Longchamp <valentin.longchamp@keymile.com>
Acked-by: Li Yang <leoli@freescale.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-04-13 15:57:19 -07:00
Steven Hardy
cb62d65f96 usb: qcserial add missing errorpath kfrees
There are two -ENODEV error paths in qcprobe where the allocated private
data is not freed, this patch adds the two missing kfrees to avoid
leaking memory on the error path

Signed-off-by: Steven Hardy <shardy@redhat.com>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-04-13 15:53:16 -07:00
Steven Hardy
99ab3f9e4e usb: qcserial avoid pointing to freed memory
Rework the qcprobe logic such that serial->private is not set when
qcprobe exits with -ENODEV, otherwise serial->private will point to freed
memory on -ENODEV

Signed-off-by: Steven Hardy <shardy@redhat.com>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-04-13 15:53:16 -07:00
Steven Hardy
10c9ab15d6 usb: Fix qcserial memory leak on rmmod
qcprobe function allocates serial->private but this is never freed, this
patch adds a new function qc_release() which frees serial->private, after
calling usb_wwan_release

Signed-off-by: Steven Hardy <shardy@redhat.com>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-04-13 15:53:16 -07:00
Paul Friedrich
c53c2fab40 USB: ftdi_sio: add ids for Hameg HO720 and HO730
usb serial: ftdi_sio: add two missing USB ID's for Hameg interfaces HO720
and HO730

Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-04-13 15:52:19 -07:00
Marius B. Kotsbak
80f9df3e00 USB: option: Added support for Samsung GT-B3730/GT-B3710 LTE USB modem.
Bind only modem AT command endpoint to option.

Signed-off-by: Marius B. Kotsbak <marius@kotsbak.com>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-04-13 15:49:25 -07:00
Dan Carpenter
485707116b usb: pch_udc: unlock on allocation failure
There was an unlock missing on the error path.

Also I did a small cleanup by changing ep->dev->lock for just dev->lock.
They're the same lock, but dev->lock is shorter and that's how it is
used for the spin_unlock_irqrestore() call.

Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-04-13 15:44:05 -07:00
Joerg Roedel
9ab7927bb8 USB host: Fix lockdep warning in AMD PLL quirk
Booting latest kernel on my test machine produces a lockdep
warning from the usb_amd_find_chipset_info() function:

 WARNING: at /data/lemmy/linux.trees.git/kernel/lockdep.c:2465 lockdep_trace_alloc+0x95/0xc2()
 Hardware name: Snook
 Modules linked in:
 Pid: 959, comm: work_for_cpu Not tainted 2.6.39-rc2+ #22
 Call Trace:
  [<ffffffff8103c0d4>] warn_slowpath_common+0x80/0x98
  [<ffffffff812387e6>] ? T.492+0x24/0x26
  [<ffffffff8103c101>] warn_slowpath_null+0x15/0x17
  [<ffffffff81068667>] lockdep_trace_alloc+0x95/0xc2
  [<ffffffff810ed9ac>] slab_pre_alloc_hook+0x18/0x3b
  [<ffffffff810ef227>] kmem_cache_alloc_trace+0x25/0xba
  [<ffffffff812387e6>] T.492+0x24/0x26
  [<ffffffff81238816>] pci_get_subsys+0x2e/0x73
  [<ffffffff8123886c>] pci_get_device+0x11/0x13
  [<ffffffff814082a9>] usb_amd_find_chipset_info+0x3f/0x18a
...

It turns out that this function calls pci_get_device under a spin_lock
with irqs disabled, but the pci_get_device function is only allowed in
preemptible context.

This patch fixes the warning by making all data-structure
modifications on temporal storage and commiting this back
into the visible structure at the end. While at it, this
patch also moves the pci_dev_put calls out of the spinlocks
because this function might sleep too.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-04-13 15:44:04 -07:00
Sebastian Andrzej Siewior
16a2f970f3 usb/gadget: don't leak hs_descriptors
We should free both descriptors.

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-04-13 15:44:03 -07:00
Yoichi Yuasa
0fdf65c339 USB: ohci-au1xxx: fix warning "__BIG_ENDIAN" is not defined
In file included from drivers/usb/host/ohci-hcd.c:1028:0:
drivers/usb/host/ohci-au1xxx.c:36:7: warning: "__BIG_ENDIAN" is not defined

Signed-off-by: Yoichi Yuasa <yuasa@linux-mips.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-04-13 15:44:03 -07:00
Johan Hovold
11a31d8412 USB: ftdi_sio: add PID for OCT DK201 docking station
Add PID 0x0103 for serial port of the OCT DK201 docking station.

Reported-by: Jan Hoogenraad <jan@hoogenraad.net>
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-04-13 15:44:03 -07:00
Johan Hovold
36a52c009a usb: musb: omap2430: fix build failure
Fix build failure introduced by commit
7acc6197b7 (usb: musb: Idle path retention
and offmode support for OMAP3) when building without gadget
support.

  CC      drivers/usb/musb/omap2430.o
drivers/usb/musb/omap2430.c: In function ‘musb_otg_notifications’:
drivers/usb/musb/omap2430.c:262: error: ‘struct musb’ has no member named ‘gadget_driver’

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Cc: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-04-13 15:44:02 -07:00
Alan Stern
94ae4976e2 USB: EHCI: unlink unused QHs when the controller is stopped
This patch (as1458) fixes a problem affecting ultra-reliable systems:
When hardware failover of an EHCI controller occurs, the data
structures do not get released correctly.  This is because the routine
responsible for removing unused QHs from the async schedule assumes
the controller is running properly (the frame counter is used in
determining how long the QH has been idle) -- but when a failover
causes the controller to be electronically disconnected from the PCI
bus, obviously it stops running.

The solution is simple: Allow scan_async() to remove a QH from the
async schedule if it has been idle for long enough _or_ if the
controller is stopped.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Reported-and-Tested-by: Dan Duval <dan.duval@stratus.com>
CC: <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-04-13 15:44:02 -07:00
Yauheni Kaliuta
505d1f69ec usb: gadget: eem: fix echo command processing
During processing of bunch of eem frames if "echo" command is found
skb is cloned and the cloned version should be used to send reply.
Unfortunately, the data of the original skb were actually used and
the cloned skb is never freed.

Using the cloned skb and freeing the skb in the completion callback
for usb request.

Signed-off-by: Yauheni Kaliuta <yauheni.kaliuta@nokia.com>
Reviewed-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-04-13 15:44:01 -07:00
Christian Simon
5a9443f08c USB: ftdi_sio: Added IDs for CTI USB Serial Devices
I added new ProdutIds for two devices from CTI GmbH Leipzig.

Signed-off-by: Christian Simon <simon@swine.de>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-04-13 15:44:01 -07:00
Yoshihiro Shimoda
2c2da1799b usb: r8a66597-udc: fix spinlock usage
Because the disconnect function in the composite driver will call spin_lock,
this driver has to call spin_unlock before calling driver->disconnet().

Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-04-13 15:44:00 -07:00
Michal Simek
0291303d37 usb: Fix Kconfig unmet dependencies for Microblaze EHCI
Disable USB_ARCH_HAS_EHCI in arch Kconfig and enable it in usb Kconfig

Warning log:
warning: (MICROBLAZE) selects USB_ARCH_HAS_EHCI which has unmet
direct dependencies (USB_SUPPORT)

Signed-off-by: Michal Simek <monstr@monstr.eu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-04-13 15:43:59 -07:00
Alexey Khoroshilov
00cc7a5faf USB: usb-gadget: unlock data->lock mutex on error path in ep_read()
ep_read() acquires data->lock mutex in get_ready_ep() and releases it on
all paths except for one: when usb_endpoint_xfer_isoc() failed. The
patch adds mutex_unlock(&data->lock) at that path.

Found by Linux Driver Verification project (linuxtesting.org).

Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-04-13 15:43:59 -07:00
Randy Dunlap
d06847fec2 usb: fix ips1760-hcd printk format warning
Fix printk format build warning and grammar typo on same line.

drivers/usb/host/isp1760-hcd.c:300: warning: format '%lu' expects type 'long unsigned int', but argument 4 has type 'size_t'

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-04-13 15:43:58 -07:00
Greg Kroah-Hartman
86a45a023d Merge branch 'for-greg' of git://gitorious.org/usb/usb into usb-linus
* 'for-greg' of git://gitorious.org/usb/usb:
  USB: musb: blackfin: work around anomaly 05000450
  usb: musb: Fix the crash issue during reboot
  usb: musb: gadget: check the correct list_head
  usb: musb: temporarily make it bool
  USB: musb: dereferencing an iomem pointer
  USB: musb: silence printk format warning
  USB: musb: using 0 instead of NULL
  USB: musb: add missing unlock in cppi_interrupt()
  usb: musb: ux500: copy dma mask from platform device to musb device
  usb: musb: clear AUTOSET while clearing DMAENAB
2011-04-13 14:33:52 -07:00
Mike Frysinger
132543074a USB: musb: blackfin: work around anomaly 05000450
DMA mode 1 data corruption anomaly on Blackfin systems.  This issue is
specific to the Blackfin silicon as the bug appears to be related to the
connection of the musb ip to the bus/dma fabric.

Data corruption when using USB DMA mode 1. (Issue manager 17-01-0105)
DMA mode 1 allows large size transfers to generate a single interrupt
at the end of the entire transfer.  The transfer is split up in packets
of length specified in the Maximum Packet Size field for that endpoint.
If the transfer size is not an integer multiple of the Maximum Packet
Size, a short packet will be present at the end of the transfer.

Under certain conditions this packet may be corrupted in the USB FIFO.

Workaround:
Use DMA mode 1 to transfer (n* Maximum Packet Size) and schedule DMA
mode 0 to transfer the short packet.

As an example if your transfer size is 33168 bytes and Maximum Packet
Size equals 512, schedule [33168 - (33168 mod 512)] in DMA mode 1 and
the remainder (33168 mod 512) in DMA mode 0.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>
2011-04-13 11:51:28 +03:00
Hema HK
4f9edd2d7e usb: musb: Fix the crash issue during reboot
Below crash observed with commit 7acc6197b7
(usb: musb: Idle path retention and offmode support for OMAP3)
during board reboot.

The musb clock was disabled when musb_shutdown() was called by
platform_drv_shutdown in which there are register accesses.
call pm_runtime_get_sync() and pm_runtime_put_sync() in the
musb_shutdown function.

/ # [  172.368774] Unhandled fault: imprecise external abort (0x1406) at 0x400f0000
[  172.376190] Internal error: : 1406 [#1] SMP
[  172.380554] last sysfs file: /sys/devices/platform/omap/omap_i2c.4/i2c-4/i2c-dev/i2c-4/dev
[  172.389221] Modules linked in:
[  172.392456] CPU: 0    Tainted: G        W    (2.6.38-06671-geddecbb #33)
[  172.399475] PC is at do_raw_spin_unlock+0x50/0xc0
[  172.404418] LR is at _raw_spin_unlock_irqrestore+0x24/0x44
[  172.410186] pc : [<c069bfdc>]    lr : [<c085a7f8>]    psr: 60000093
[  172.410186] sp : ee993e40  ip : c0d00240  fp : bea9cf14
[  172.422241] r10: 00000000  r9 : ee992000  r8 : c04b2fa8
[  172.427703] r7 : 00000000  r6 : c0fa46c0  r5 : ef966124  r4 : ef966124
[  172.434539] r3 : ef92cbc0  r2 : ef92cbc0  r1 : 00000000  r0 : ef966124
[  172.441406] Flags: nZCv  IRQs off  FIQs on  Mode SVC_32  ISA ARM  Segment user
[  172.448974] Control: 10c5387d  Table: ae8d804a  DAC: 00000015
[  172.454986] Process init (pid: 1094, stack limit = 0xee9922f8)
[  172.461120] Stack: (0xee993e40 to 0xee994000)
[  172.465667] 3e40: a0000013 c085a7f8 ef966124 a0000013 c0fa46c0 c0761ab4 c0761a70 ef95c008
[  172.474273] 3e60: ef95c014 c06e2fd0 c06e2fbc c06dea90 00000000 01234567 28121969 c04fccb4
[  172.482849] 3e80: 00000000 c04fcd04 c0a302bc c04fce44 c0a02600 00000001 00000000 c085cd04
[  172.491424] 3ea0: 00000000 00000002 c09ea000 c085afc0 ee993f24 00000000 00040001 00000445
[  172.499999] 3ec0: a8eb9d34 00000027 00000000 00000000 00000000 c0a56a4c 00000000 00000000
[  172.508575] 3ee0: 00000002 60000093 00000000 c0519aac 00000002 00000080 00000000 c0550420
[  172.517150] 3f00: 00000000 00000002 ee970000 c0a56a3c c0a56a20 00000002 c0a56a3c 00000000
[  172.525726] 3f20: c0a56a3c 0000000a c1580e00 c0a56a20 00000002 c0a56a3c c1580e00 c0a56a20
[  172.534301] 3f40: ef92cbc0 c05173a0 00000001 ef92cbc0 c0576190 c04e3174 20000013 c0517324
[  172.542877] 3f60: ef815c00 ee90b720 c04e3174 c0576190 00000001 ef92cbc0 c04b2f00 ffffffff
[  172.551483] 3f80: 00000058 c0517324 00000000 00000000 ffffffff 00000000 00000000 ffffffff
[  172.560058] 3fa0: 00000058 c04b2de0 00000000 00000000 fee1dead 28121969 01234567 00000000
[  172.568634] 3fc0: 00000000 00000000 ffffffff 00000058 00000000 00000001 400aa000 bea9cf14
[  172.577209] 3fe0: 000ea148 bea9c958 000aa750 40225728 60000010 fee1dead 00000000 00000000
[  172.585784] [<c069bfdc>] (do_raw_spin_unlock+0x50/0xc0) from [<c085a7f8>] (_raw_spin_unlock_irqrestore+0x24/0x44)
[  172.596588] [<c085a7f8>] (_raw_spin_unlock_irqrestore+0x24/0x44) from [<c0761ab4>] (musb_shutdown+0x44/0x88)
[  172.606933] [<c0761ab4>] (musb_shutdown+0x44/0x88) from [<c06e2fd0>] (platform_drv_shutdown+0x14/0x18)
[  172.616699] [<c06e2fd0>] (platform_drv_shutdown+0x14/0x18) from [<c06dea90>] (device_shutdown+0x74/0xb4)
[  172.626647] [<c06dea90>] (device_shutdown+0x74/0xb4) from [<c04fccb4>] (kernel_restart_prepare+0x24/0x38)
[  172.636688] [<c04fccb4>] (kernel_restart_prepare+0x24/0x38) from [<c04fcd04>] (kernel_restart+0xc/0x48)
[  172.646545] [<c04fcd04>] (kernel_restart+0xc/0x48) from [<c04fce44>] (sys_reboot+0xfc/0x1d8)
[  172.655426] [<c04fce44>] (sys_reboot+0xfc/0x1d8) from [<c04b2de0>] (ret_fast_syscall+0x0/0x3c)
[  172.664459] Code: e3c3303f e594200c e593300c e1520003 (0a000002)
[  172.670867] ------------[ cut here ]------------

Signed-off-by: Hema HK <hemahk@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
2011-04-13 11:51:28 +03:00
Felipe Balbi
3d5ad13eac usb: musb: gadget: check the correct list_head
We are now using our own list_head, so we should
be checking against that, not the gadget driver's
list_head.

Signed-off-by: Felipe Balbi <balbi@ti.com>
2011-04-13 11:51:26 +03:00
Felipe Balbi
7a180e70cf usb: musb: temporarily make it bool
Due to the recent changes to musb's glue layers,
we can't compile musb-hdrc as a module - compilation
will break due to undefined symbol musb_debug. In
order to fix that, we need a big re-work of the
debug support on the MUSB driver.

Because that would mean a lot of new code coming
into the -rc series, it's best to defer that to
next merge window and for now just disable module
support for MUSB.

Once we get the refactor of the debugging support
done, we can simply revert this patch and things
will go back to normal again.

Cc: stable@kernel.org # v2.6.38
Signed-off-by: Felipe Balbi <balbi@ti.com>
2011-04-13 11:51:25 +03:00
Dan Carpenter
2e10f5e70f USB: musb: dereferencing an iomem pointer
"tx_ram" points to io memory.  We can't dereference it directly.  Sparse
complains about this: "drivers/usb/musb/cppi_dma.c:1205:25: warning:
dereference of noderef expression"

Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
2011-04-13 11:51:24 +03:00
Dan Carpenter
2fbcf3fa43 USB: musb: silence printk format warning
Gcc gives the following warnings:

drivers/usb/musb/cppi_dma.c: In function ‘cppi_next_tx_segment’:
drivers/usb/musb/cppi_dma.c:600: warning: format ‘%x’ expects type ‘unsigned int’, but argument 8 has type ‘dma_addr_t’
drivers/usb/musb/cppi_dma.c: In function ‘cppi_next_rx_segment’:
drivers/usb/musb/cppi_dma.c:822: warning: format ‘%x’ expects type ‘unsigned int’, but argument 9 has type ‘dma_addr_t’
drivers/usb/musb/cppi_dma.c: In function ‘cppi_rx_scan’:
drivers/usb/musb/cppi_dma.c:1042: warning: format ‘%08x’ expects type ‘unsigned int’, but argument 4 has type ‘dma_addr_t’
drivers/usb/musb/cppi_dma.c:1114: warning: format ‘%08x’ expects type ‘unsigned int’, but argument 7 has type ‘dma_addr_t’

dma_addr_t is sometimes 32 bit and sometimes 64.  We normally cast them
to unsigned long long for printk().

Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
2011-04-13 11:51:23 +03:00
Dan Carpenter
aca7f35321 USB: musb: using 0 instead of NULL
Sparse complains (and rightly so):
drivers/usb/musb/cppi_dma.c:1458:33:
	warning: Using plain integer as NULL pointer

Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
2011-04-13 11:51:21 +03:00
Dan Carpenter
ec63bf6c06 USB: musb: add missing unlock in cppi_interrupt()
We should unlock before returning here.

Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
2011-04-13 11:50:58 +03:00
Mian Yousaf Kaukab
8726606424 usb: musb: ux500: copy dma mask from platform device to musb device
musb code checks dma mask before calling dma hooks.

Signed-off-by: Mian Yousaf Kaukab <mian.yousaf.kaukab@stericsson.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
2011-04-13 11:50:57 +03:00
Mian Yousaf Kaukab
100d4a9d20 usb: musb: clear AUTOSET while clearing DMAENAB
On the completion of tx dma, dma is disabled by clearing MUSB_TXCSR_DMAENAB in
TXCSR. If MUSB_TXCSR_AUTOSET was set in txstate() it will remain set although
it is not needed in PIO mode. Clear it as soon as it is not needed.

Signed-off-by: Mian Yousaf Kaukab <mian.yousaf.kaukab@stericsson.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
2011-04-13 11:50:55 +03:00
Linus Torvalds
42933bac11 Merge branch 'for-linus2' of git://git.profusion.mobi/users/lucas/linux-2.6
* 'for-linus2' of git://git.profusion.mobi/users/lucas/linux-2.6:
  Fix common misspellings
2011-04-07 11:14:49 -07:00
Randy Dunlap
4acfaf829d usb/serial: fix function args warnings, dropping *filp
Fix build warnings caused by removal of *filp arg in struct
usb_serial_driver.

These changes were missed somehow in commits 00a0d0d65b ("tty: remove
filp from the USB tty ioctls") and 60b33c133c ("tiocmget: kill off
the passing of the struct file")

  drivers/usb/serial/mct_u232.c:159: warning: initialization from incompatible pointer type
  drivers/usb/serial/opticon.c:627: warning: initialization from incompatible pointer type

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Cc: Alan Cox <alan@linux.intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-04-04 08:35:20 -07:00
Lucas De Marchi
25985edced Fix common misspellings
Fixes generated by 'codespell' and manually reviewed.

Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
2011-03-31 11:26:23 -03:00
Linus Torvalds
85eb1513c1 Merge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm
* 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm: (65 commits)
  ARM: 6826/1: Merge v6 and v7 DEBUG_LL DCC support
  ARM: 6838/1: etm: fix section mismatch warning
  ARM: 6837/1: remove unused pci_fixup_prpmc1100
  ARM: 6836/1: kprobes/fix emulation of LDR/STR instruction when Rn == PC
  Fix the broken build for Marvell Dove platform.
  ARM: 6835/1: perf: ensure overflows aren't missed due to IRQ latency
  ARM: 6834/1: perf: reset counters on all CPUs during initialisation
  ARM: 6833/1: perf: add required isbs() to ARMv7 backend
  ARM: 6825/1: kernel/sleep.S: fix Thumb2 compilation issues
  ARM: 6807/1: realview: Fix secondary GIC initialisation for EB with MPCore tile
  arm: mach-mx3: pcm043: add write-protect and card-detect for SD1
  eukrea_mbimxsd51: add SD Card detect
  eukrea_mbimxsd25-baseboard: add SD card detect
  mx3/eukrea_mbimxsd-baseboard: add SD card detect support
  mx3/eukrea_mbimxsd-baseboard: fix gpio request
  ARM: mxs/mx28evk: add mmc device
  ARM: mxs/mx23evk: add mmc device
  ARM: mxs: dynamically allocate mmc device
  ARM: mx51_efika: update platform data for new mfd changes
  mx2/iomux: Set direction for CSPI2 pins
  ...
2011-03-30 07:50:45 -07:00
Thomas Gleixner
dced35aeb0 drivers: Final irq namespace conversion
Scripted with coccinelle.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2011-03-29 14:48:19 +02:00
Russell King
938c0ace3f Merge branch 'devel' of git://git.kernel.org/pub/scm/linux/kernel/git/ycmiao/pxa-linux-2.6 into devel-stable
Conflicts:
	arch/arm/mach-pxa/tosa.c
2011-03-26 10:03:03 +00:00
Linus Torvalds
b4a41ed24c Merge branch 'usb-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6
* 'usb-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6:
  USB: cdc-acm: fix potential null-pointer dereference on disconnect
  USB: cdc-acm: fix potential null-pointer dereference
  USB: cdc-acm: fix memory corruption / panic
  USB: Fix 'bad dma' problem on WDM device disconnect
  usb: wwan: fix compilation without CONFIG_PM_RUNTIME
  USB: uss720 fixup refcount position
  usb: musb: blackfin: fix typo in new bfin_musb_vbus_status func
  usb: musb: blackfin: fix typo in new dev_pm_ops struct
  usb: musb: blackfin: fix typo in platform driver name
  usb: musb: Fix for merge issue
  ehci-hcd: Bug fix: don't set a QH's Halt bit
  USB: Do not pass negative length to snoop_urb()
2011-03-24 10:02:55 -07:00
Johan Hovold
7e7797e7f6 USB: cdc-acm: fix potential null-pointer dereference on disconnect
Fix potential null-pointer exception on disconnect introduced by commit
11ea859d64 (USB: additional power savings
for cdc-acm devices that support remote wakeup).

Only access acm->dev after making sure it is non-null in control urb
completion handler.

Cc: stable <stable@kernel.org>
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-03-23 13:22:02 -07:00
Johan Hovold
15e5bee33f USB: cdc-acm: fix potential null-pointer dereference
Must check return value of tty_port_tty_get.

Cc: stable <stable@kernel.org>
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-03-23 13:21:59 -07:00
Johan Hovold
23b80550e2 USB: cdc-acm: fix memory corruption / panic
Prevent read urbs from being resubmitted from tasklet after port close.

The receive tasklet was not disabled on port close, which could lead to
corruption of receive lists on consecutive port open. In particular,
read urbs could be re-submitted before port open, added to free list in
open, and then added a second time to the free list in the completion
handler.

cdc-acm.c: Entering acm_tty_open.
cdc-acm.c: acm_control_msg: rq: 0x22 val: 0x3 len: 0x0 result: 0
cdc-acm.c: Entering acm_rx_tasklet
cdc-acm.c: acm_rx_tasklet: sending urb 0xf50da280, rcv 0xf57fbc24, buf 0xf57fbd64
cdc-acm.c: set line: 115200 0 0 8
cdc-acm.c: acm_control_msg: rq: 0x20 val: 0x0 len: 0x7 result: 7
cdc-acm.c: acm_tty_close
cdc-acm.c: acm_port_down
cdc-acm.c: acm_control_msg: rq: 0x22 val: 0x0 len: 0x0 result: 0
cdc-acm.c: acm_ctrl_irq - urb shutting down with status: -2
cdc-acm.c: acm_rx_tasklet: sending urb 0xf50da300, rcv 0xf57fbc10, buf 0xf57fbd50
cdc-acm.c: Entering acm_read_bulk with status -2
cdc_acm 4-1:1.1: Aborting, acm not ready
cdc-acm.c: Entering acm_read_bulk with status -2
cdc_acm 4-1:1.1: Aborting, acm not ready
cdc-acm.c: acm_rx_tasklet: sending urb 0xf50da380, rcv 0xf57fbbfc, buf 0xf57fbd3c
cdc-acm.c: acm_rx_tasklet: sending urb 0xf50da400, rcv 0xf57fbbe8, buf 0xf57fbd28
cdc-acm.c: acm_rx_tasklet: sending urb 0xf50da480, rcv 0xf57fbbd4, buf 0xf57fbd14
cdc-acm.c: acm_rx_tasklet: sending urb 0xf50da900, rcv 0xf57fbbc0, buf 0xf57fbd00
cdc-acm.c: acm_rx_tasklet: sending urb 0xf50da980, rcv 0xf57fbbac, buf 0xf57fbcec
cdc-acm.c: acm_rx_tasklet: sending urb 0xf50daa00, rcv 0xf57fbb98, buf 0xf57fbcd8
cdc-acm.c: acm_rx_tasklet: sending urb 0xf50daa80, rcv 0xf57fbb84, buf 0xf57fbcc4
cdc-acm.c: acm_rx_tasklet: sending urb 0xf50dab00, rcv 0xf57fbb70, buf 0xf57fbcb0
cdc-acm.c: acm_rx_tasklet: sending urb 0xf50dab80, rcv 0xf57fbb5c, buf 0xf57fbc9c
cdc-acm.c: acm_rx_tasklet: sending urb 0xf50dac00, rcv 0xf57fbb48, buf 0xf57fbc88
cdc-acm.c: acm_rx_tasklet: sending urb 0xf50dac80, rcv 0xf57fbb34, buf 0xf57fbc74
cdc-acm.c: acm_rx_tasklet: sending urb 0xf50dad00, rcv 0xf57fbb20, buf 0xf57fbc60
cdc-acm.c: acm_rx_tasklet: sending urb 0xf50dad80, rcv 0xf57fbb0c, buf 0xf57fbc4c
cdc-acm.c: acm_rx_tasklet: sending urb 0xf50da880, rcv 0xf57fbaf8, buf 0xf57fbc38
cdc-acm.c: Entering acm_tty_open.
cdc-acm.c: acm_control_msg: rq: 0x22 val: 0x3 len: 0x0 result: 0
cdc-acm.c: Entering acm_rx_tasklet
cdc-acm.c: acm_rx_tasklet: sending urb 0xf50da280, rcv 0xf57fbc24, buf 0xf57fbd64
cdc-acm.c: Entering acm_tty_write to write 3 bytes,
cdc-acm.c: Get 3 bytes...
cdc-acm.c: acm_write_start susp_count: 0
cdc-acm.c: Entering acm_read_bulk with status 0
------------[ cut here ]------------
WARNING: at /home/johan/src/linux/linux-2.6/lib/list_debug.c:57 list_del+0x10c/0x120()
Hardware name: Vostro 1520
list_del corruption. next->prev should be f57fbc10, but was f57fbaf8
Modules linked in: cdc_acm
Pid: 3, comm: ksoftirqd/0 Not tainted 2.6.37+ #39
Call Trace:
 [<c103c7e2>] warn_slowpath_common+0x72/0xa0
 [<c11dd8ac>] ? list_del+0x10c/0x120
 [<c11dd8ac>] ? list_del+0x10c/0x120
 [<c103c8b3>] warn_slowpath_fmt+0x33/0x40
 [<c11dd8ac>] list_del+0x10c/0x120
 [<f8051dbf>] acm_rx_tasklet+0xef/0x3e0 [cdc_acm]
 [<c135465d>] ? net_rps_action_and_irq_enable+0x6d/0x80
 [<c1042bb6>] tasklet_action+0xe6/0x140
 [<c104342f>] __do_softirq+0xaf/0x210
 [<c1043380>] ? __do_softirq+0x0/0x210
 <IRQ>  [<c1042c9a>] ? run_ksoftirqd+0x8a/0x1c0
 [<c1042c10>] ? run_ksoftirqd+0x0/0x1c0
 [<c105ac24>] ? kthread+0x74/0x80
 [<c105abb0>] ? kthread+0x0/0x80
 [<c100337a>] ? kernel_thread_helper+0x6/0x10
---[ end trace efd9a11434f0082e ]---
------------[ cut here ]------------
WARNING: at /home/johan/src/linux/linux-2.6/lib/list_debug.c:57 list_del+0x10c/0x120()
Hardware name: Vostro 1520
list_del corruption. next->prev should be f57fbd50, but was f57fbdb0
Modules linked in: cdc_acm
Pid: 3, comm: ksoftirqd/0 Tainted: G        W   2.6.37+ #39
Call Trace:
 [<c103c7e2>] warn_slowpath_common+0x72/0xa0
 [<c11dd8ac>] ? list_del+0x10c/0x120
 [<c11dd8ac>] ? list_del+0x10c/0x120
 [<c103c8b3>] warn_slowpath_fmt+0x33/0x40
 [<c11dd8ac>] list_del+0x10c/0x120
 [<f8051dd6>] acm_rx_tasklet+0x106/0x3e0 [cdc_acm]
 [<c135465d>] ? net_rps_action_and_irq_enable+0x6d/0x80
 [<c1042bb6>] tasklet_action+0xe6/0x140
 [<c104342f>] __do_softirq+0xaf/0x210
 [<c1043380>] ? __do_softirq+0x0/0x210
 <IRQ>  [<c1042c9a>] ? run_ksoftirqd+0x8a/0x1c0
 [<c1042c10>] ? run_ksoftirqd+0x0/0x1c0
 [<c105ac24>] ? kthread+0x74/0x80
 [<c105abb0>] ? kthread+0x0/0x80
 [<c100337a>] ? kernel_thread_helper+0x6/0x10
---[ end trace efd9a11434f0082f ]---
cdc-acm.c: acm_rx_tasklet: sending urb 0xf50da300, rcv 0xf57fbc10, buf 0xf57fbd50
cdc-acm.c: disconnected from network
cdc-acm.c: acm_rx_tasklet: sending urb 0xf50da380, rcv 0xf57fbbfc, buf 0xf57fbd3c
cdc-acm.c: Entering acm_rx_tasklet
------------[ cut here ]------------
WARNING: at /home/johan/src/linux/linux-2.6/lib/list_debug.c:48 list_del+0xd5/0x120()
Hardware name: Vostro 1520
list_del corruption, next is LIST_POISON1 (00100100)
Modules linked in: cdc_acm
Pid: 3, comm: ksoftirqd/0 Tainted: G        W   2.6.37+ #39
Call Trace:
 [<c103c7e2>] warn_slowpath_common+0x72/0xa0
 [<c11dd875>] ? list_del+0xd5/0x120
 [<c11dd875>] ? list_del+0xd5/0x120
 [<c103c8b3>] warn_slowpath_fmt+0x33/0x40
 [<c11dd875>] list_del+0xd5/0x120
 [<f8051fac>] acm_rx_tasklet+0x2dc/0x3e0 [cdc_acm]
 [<c106dbab>] ? trace_hardirqs_on+0xb/0x10
 [<c1042b30>] ? tasklet_action+0x60/0x140
 [<c1042bb6>] tasklet_action+0xe6/0x140
 [<c104342f>] __do_softirq+0xaf/0x210
 [<c1043380>] ? __do_softirq+0x0/0x210
 <IRQ>  [<c1042c9a>] ? run_ksoftirqd+0x8a/0x1c0
 [<c1042c10>] ? run_ksoftirqd+0x0/0x1c0
 [<c105ac24>] ? kthread+0x74/0x80
 [<c105abb0>] ? kthread+0x0/0x80
 [<c100337a>] ? kernel_thread_helper+0x6/0x10
---[ end trace efd9a11434f00830 ]---
BUG: unable to handle kernel paging request at 00200200
IP: [<c11dd7bd>] list_del+0x1d/0x120
*pde = 00000000
Oops: 0000 [#1] PREEMPT SMP
last sysfs file: /sys/devices/pci0000:00/0000:00:1a.1/usb4/4-1/4-1:1.0/tty/ttyACM0/uevent
Modules linked in: cdc_acm
Pid: 3, comm: ksoftirqd/0 Tainted: G        W   2.6.37+ #39 0T816J/Vostro 1520
EIP: 0060:[<c11dd7bd>] EFLAGS: 00010046 CPU: 0
EIP is at list_del+0x1d/0x120
EAX: f57fbd3c EBX: f57fb800 ECX: ffff8000 EDX: 00200200
ESI: f57fbe90 EDI: f57fbd3c EBP: f600bf54 ESP: f600bf3c
 DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068
Process ksoftirqd/0 (pid: 3, ti=f600a000 task=f60791c0 task.ti=f6082000)
Stack:
 c1527e84 00000030 c1527e54 00100100 f57fb800 f57fbd3c f600bf98 f8051fac
 f8053104 f8052b94 f600bf6c c106dbab f600bf80 00000286 f60791c0 c1042b30
 f57fbda8 f57f5800 f57fbdb0 f57fbd80 f57fbe7c c1656b04 00000000 f600bfb0
Call Trace:
 [<f8051fac>] ? acm_rx_tasklet+0x2dc/0x3e0 [cdc_acm]
 [<c106dbab>] ? trace_hardirqs_on+0xb/0x10
 [<c1042b30>] ? tasklet_action+0x60/0x140
 [<c1042bb6>] ? tasklet_action+0xe6/0x140
 [<c104342f>] ? __do_softirq+0xaf/0x210
 [<c1043380>] ? __do_softirq+0x0/0x210
 <IRQ>
 [<c1042c9a>] ? run_ksoftirqd+0x8a/0x1c0
 [<c1042c10>] ? run_ksoftirqd+0x0/0x1c0
 [<c105ac24>] ? kthread+0x74/0x80
 [<c105abb0>] ? kthread+0x0/0x80
 [<c100337a>] ? kernel_thread_helper+0x6/0x10
Code: ff 48 14 e9 57 ff ff ff 90 90 90 90 90 90 55 89 e5 83 ec 18 81 38 00 01 10 00 0f 84 9c 00 00 00 8b 50 04 81 fa 00 02 20 00 74 33 <8b> 12 39 d0 75 5c 8b 10 8b 4a 04 39 c8 0f 85 b5 00 00 00 8b 48
EIP: [<c11dd7bd>] list_del+0x1d/0x120 SS:ESP 0068:f600bf3c
CR2: 0000000000200200
---[ end trace efd9a11434f00831 ]---
Kernel panic - not syncing: Fatal exception in interrupt
Pid: 3, comm: ksoftirqd/0 Tainted: G      D W   2.6.37+ #39
Call Trace:
 [<c13fede1>] ? printk+0x1d/0x24
 [<c13fecce>] panic+0x66/0x15c
 [<c10067df>] oops_end+0x8f/0x90
 [<c1025476>] no_context+0xc6/0x160
 [<c10255a8>] __bad_area_nosemaphore+0x98/0x140
 [<c103cf68>] ? release_console_sem+0x1d8/0x210
 [<c1025667>] bad_area_nosemaphore+0x17/0x20
 [<c1025a49>] do_page_fault+0x279/0x420
 [<c1006a8f>] ? show_trace+0x1f/0x30
 [<c13fede1>] ? printk+0x1d/0x24
 [<c10257d0>] ? do_page_fault+0x0/0x420
 [<c140333b>] error_code+0x5f/0x64
 [<c103007b>] ? select_task_rq_fair+0x37b/0x6a0
 [<c10257d0>] ? do_page_fault+0x0/0x420
 [<c11dd7bd>] ? list_del+0x1d/0x120
 [<f8051fac>] acm_rx_tasklet+0x2dc/0x3e0 [cdc_acm]
 [<c106dbab>] ? trace_hardirqs_on+0xb/0x10
 [<c1042b30>] ? tasklet_action+0x60/0x140
 [<c1042bb6>] tasklet_action+0xe6/0x140
 [<c104342f>] __do_softirq+0xaf/0x210
 [<c1043380>] ? __do_softirq+0x0/0x210
 <IRQ>  [<c1042c9a>] ? run_ksoftirqd+0x8a/0x1c0
 [<c1042c10>] ? run_ksoftirqd+0x0/0x1c0
 [<c105ac24>] ? kthread+0x74/0x80
 [<c105abb0>] ? kthread+0x0/0x80
 [<c100337a>] ? kernel_thread_helper+0x6/0x10
panic occurred, switching back to text console
------------[ cut here ]------------

Cc: stable <stable@kernel.org>
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-03-23 13:21:56 -07:00
Robert Lukassen
878b753e32 USB: Fix 'bad dma' problem on WDM device disconnect
In the WDM class driver a disconnect event leads to calls to
usb_free_coherent to put back two USB DMA buffers allocated earlier.
The call to usb_free_coherent uses a different size parameter
(desc->wMaxCommand) than the corresponding call to usb_alloc_coherent
(desc->bMaxPacketSize0).

When a disconnect event occurs, this leads to 'bad dma' complaints
from usb core because the USB DMA buffer is being pushed back to the
'buffer-2048' pool from which it has not been allocated.

This patch against the most recent linux-2.6 kernel ensures that the
parameters used by usb_alloc_coherent & usb_free_coherent calls in
cdc-wdm.c match.

Signed-off-by: Robert Lukassen <robert.lukassen@tomtom.com>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-03-23 13:21:02 -07:00
Oliver Neukum
97ac01d8f1 usb: wwan: fix compilation without CONFIG_PM_RUNTIME
The pm usage counter must be accessed with the proper wrappers
to allow compilation under all configurations.

Signed-off-by: Oliver Neukum <oneukum@suse.de>
Reported-by: Eric Dumazet <eric.dumazet@gmail.com>
Reported-by: Tao Ma <boyu.mt@taobao.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-03-23 13:16:06 -07:00
Peter Holik
adaa3c6342 USB: uss720 fixup refcount position
My testprog do a lot of bitbang - after hours i got following warning and my machine lockups:
WARNING: at /build/buildd/linux-2.6.38/lib/kref.c:34
After debugging uss720 driver i discovered that the completion callback was called before
usb_submit_urb returns. The callback frees the request structure that is krefed on return by
usb_submit_urb.

Signed-off-by: Peter Holik <peter@holik.at>
Acked-by: Thomas Sailer <t.sailer@alumni.ethz.ch>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-03-23 13:14:31 -07:00
Mike Frysinger
45567c28d2 usb: musb: blackfin: fix typo in new bfin_musb_vbus_status func
The common code has a "get" in the middle, but each implementation
does not have it.

Cc: stable@kernel.org
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-03-23 13:14:31 -07:00
Bob Liu
8f7e7b87ec usb: musb: blackfin: fix typo in new dev_pm_ops struct
Cc: stable@kernel.org
Signed-off-by: Bob Liu <lliubbo@gmail.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-03-23 13:14:30 -07:00
Mike Frysinger
417ddf86c8 usb: musb: blackfin: fix typo in platform driver name
The modularization of the Blackfin driver set the name to "musb-blackfin"
in all the boards, but "musb-bfin" in the driver itself.  Since the driver
file name uses "blackfin", change the driver to "musb-blackfin".  This is
also easier as it's only one file to change.

Cc: stable@kernel.org
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-03-23 13:14:18 -07:00
Hema HK
5f1e8ce75c usb: musb: Fix for merge issue
There was conflict while merging 2 patches. Enabling vbus code
is wrongly moved to error check if loop.

This is a fix to resolve the merge issue.

Signed-off-by: Hema HK <hemahk@ti.com>
Cc: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-03-23 13:14:17 -07:00
Alan Stern
b5a3b3d985 ehci-hcd: Bug fix: don't set a QH's Halt bit
This patch (as1453) fixes a long-standing bug in the ehci-hcd driver.

There is no need to set the Halt bit in the overlay region for an
unlinked or blocked QH.  Contrary to what the comment says, setting
the Halt bit does not cause the QH to be patched later; that decision
(made in qh_refresh()) depends only on whether the QH is currently
pointing to a valid qTD.  Likewise, setting the Halt bit does not
prevent completions from activating the QH while it is "stopped"; they
are prevented by the fact that qh_completions() temporarily changes
qh->qh_state to QH_STATE_COMPLETING.

On the other hand, there are circumstances in which the QH will be
reactivated _without_ being patched; this happens after an URB beyond
the head of the queue is unlinked.  Setting the Halt bit will then
cause the hardware to see the QH with both the Active and Halt bits
set, an invalid combination that will prevent the queue from
advancing and may even crash some controllers.

Apparently the only reason this hasn't been reported before is that
unlinking URBs from the middle of a running queue is quite uncommon.
However Test 17, recently added to the usbtest driver, does exactly
this, and it confirms the presence of the bug.

In short, there is no reason to set the Halt bit for an unlinked or
blocked QH, and there is a very good reason not to set it.  Therefore
the code that sets it is removed.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Tested-by: Andiry Xu <andiry.xu@amd.com>
CC: David Brownell <david-b@pacbell.net>
CC: <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-03-23 13:14:17 -07:00
Michal Sojka
9d02b42614 USB: Do not pass negative length to snoop_urb()
When `echo Y > /sys/module/usbcore/parameters/usbfs_snoop` and
usb_control_msg() returns error, a lot of kernel memory is dumped to dmesg
until unhandled kernel paging request occurs.

Signed-off-by: Michal Sojka <sojkam1@fel.cvut.cz>
Cc: stable@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-03-23 13:14:16 -07:00
Andres Salomon
944dc03551 tmio: Silence warnings introduced by mfd changes
This silences warnings such as

drivers/video/tmiofb.c: In function 'tmiofb_hw_init':
drivers/video/tmiofb.c:270: warning: initialization discards qualifiers from pointer target type

These were added by me in commit 2a79bb1d.

Signed-off-by: Andres Salomon <dilinger@queued.net>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2011-03-23 10:42:01 +01:00
Andres Salomon
7d76ac15ad mfd: mfd_cell is now implicitly available to tc6393xb drivers
No need to explicitly set the cell's platform_data/data_size.

Modify clients to use mfd_get_cell helper function instead of
accessing platform_data directly.

Signed-off-by: Andres Salomon <dilinger@queued.net>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2011-03-23 10:41:53 +01:00
Matthew Garrett
bb7ca747f8 backlight: add backlight type
There may be multiple ways of controlling the backlight on a given
machine.  Allow drivers to expose the type of interface they are
providing, making it possible for userspace to make appropriate policy
decisions.

Signed-off-by: Matthew Garrett <mjg@redhat.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: David Airlie <airlied@linux.ie>
Cc: Alex Deucher <alexdeucher@gmail.com>
Cc: Ben Skeggs <bskeggs@redhat.com>
Cc: Zhang Rui <rui.zhang@intel.com>
Cc: Len Brown <lenb@kernel.org>
Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22 17:43:59 -07:00
Rafael J. Wysocki
e1620d591a USB: Move runtime PM callbacks to usb_device_pm_ops
USB defines usb_device_type pointing to usb_device_pm_ops that
provides system-wide PM callbacks only and usb_bus_type pointing to
usb_bus_pm_ops that provides runtime PM callbacks only.  However,
the USB runtime PM callbacks may be defined in usb_device_pm_ops
which makes it possible to drop usb_bus_pm_ops and will allow us
to consolidate the handling of subsystems by the PM core code.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-03-18 19:55:36 +01:00
Linus Torvalds
0df0914d41 Merge branch 'omap-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6
* 'omap-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6: (258 commits)
  omap: zoom: host should not pull up wl1271's irq line
  arm: plat-omap: iommu: fix request_mem_region() error path
  OMAP2+: Common CPU DIE ID reading code reads wrong registers for OMAP4430
  omap4: mux: Remove duplicate mux modes
  omap: iovmm: don't check 'da' to set IOVMF_DA_FIXED flag
  omap: iovmm: disallow mapping NULL address when IOVMF_DA_ANON is set
  omap2+: mux: Fix compile when CONFIG_OMAP_MUX is not selected
  omap4: board-omap4panda: Initialise the serial pads
  omap3: board-3430sdp: Initialise the serial pads
  omap4: board-4430sdp: Initialise the serial pads
  omap2+: mux: Add macro for configuring static with omap_hwmod_mux_init
  omap2+: mux: Remove the use of IDLE flag
  omap2+: Add separate list for dynamic pads to mux
  perf: add OMAP support for the new power events
  OMAP4: Add IVA OPP enteries.
  OMAP4: Update Voltage Rail Values for MPU, IVA and CORE
  OMAP4: Enable 800 MHz and 1 GHz MPU-OPP
  OMAP3+: OPP: Replace voltage values with Macros
  OMAP3: wdtimer: Fix CORE idle transition
  Watchdog: omap_wdt: add fine grain runtime-pm
  ...

Fix up various conflicts in
 - arch/arm/mach-omap2/board-omap3evm.c
 - arch/arm/mach-omap2/clock3xxx_data.c
 - arch/arm/mach-omap2/usb-musb.c
 - arch/arm/plat-omap/include/plat/usb.h
 - drivers/usb/musb/musb_core.h
2011-03-17 19:28:15 -07:00
Linus Torvalds
411f5c7a50 Merge branch 'devel-stable' of master.kernel.org:/home/rmk/linux-2.6-arm
* 'devel-stable' of master.kernel.org:/home/rmk/linux-2.6-arm: (289 commits)
  davinci: DM644x EVM: register MUSB device earlier
  davinci: add spi devices on tnetv107x evm
  davinci: add ssp config for tnetv107x evm board
  davinci: add tnetv107x ssp platform device
  spi: add ti-ssp spi master driver
  mfd: add driver for sequencer serial port
  ARM: EXYNOS4: Implement Clock gating for System MMU
  ARM: EXYNOS4: Enhancement of System MMU driver
  ARM: EXYNOS4: Add support for gpio interrupts
  ARM: S5P: Add function to register gpio interrupt bank data
  ARM: S5P: Cleanup S5P gpio interrupt code
  ARM: EXYNOS4: Add missing GPYx banks
  ARM: S3C64XX: Fix section mismatch from cpufreq init
  ARM: EXYNOS4: Add keypad device to the SMDKV310
  ARM: EXYNOS4: Update clocks for keypad
  ARM: EXYNOS4: Update keypad base address
  ARM: EXYNOS4: Add keypad device helpers
  ARM: EXYNOS4: Add support for SATA on ARMLEX4210
  plat-nomadik: make GPIO interrupts work with cpuidle ApSleep
  mach-u300: define a dummy filter function for coh901318
  ...

Fix up various conflicts in
 - arch/arm/mach-exynos4/cpufreq.c
 - arch/arm/mach-mxs/gpio.c
 - drivers/net/Kconfig
 - drivers/tty/serial/Kconfig
 - drivers/tty/serial/Makefile
 - drivers/usb/gadget/fsl_mxc_udc.c
 - drivers/video/Kconfig
2011-03-17 19:08:06 -07:00
Linus Torvalds
63a93699c6 Merge branch 'remove' of master.kernel.org:/home/rmk/linux-2.6-arm
* 'remove' of master.kernel.org:/home/rmk/linux-2.6-arm:
  ARM: 6629/2: aaec2000: remove support for mach-aaec2000
  ARM: lh7a40x: remove unmaintained platform support

Fix up trivial conflicts in
 - arch/arm/mach-{aaec2000,lh7a40x}/include/mach/memory.h (removed)
 - drivers/usb/gadget/Kconfig (USB_[GADGET_]LH7A40X removed, others added)
2011-03-16 19:05:40 -07:00
Linus Torvalds
4c5811bf46 Merge branch 'devicetree/next' of git://git.secretlab.ca/git/linux-2.6
* 'devicetree/next' of git://git.secretlab.ca/git/linux-2.6: (21 commits)
  tty: serial: altera_jtaguart: Add device tree support
  tty: serial: altera_uart: Add devicetree support
  dt: eliminate of_platform_driver shim code
  dt: Eliminate of_platform_{,un}register_driver
  dt/serial: Eliminate users of of_platform_{,un}register_driver
  dt/usb: Eliminate users of of_platform_{,un}register_driver
  dt/video: Eliminate users of of_platform_{,un}register_driver
  dt/net: Eliminate users of of_platform_{,un}register_driver
  dt/sound: Eliminate users of of_platform_{,un}register_driver
  dt/spi: Eliminate users of of_platform_{,un}register_driver
  dt: uartlite: merge platform and of_platform driver bindings
  dt: xilinx_hwicap: merge platform and of_platform driver bindings
  ipmi: convert OF driver to platform driver
  leds/leds-gpio: merge platform_driver with of_platform_driver
  dt/sparc: Eliminate users of of_platform_{,un}register_driver
  dt/powerpc: Eliminate users of of_platform_{,un}register_driver
  dt/powerpc: move of_bus_type infrastructure to ibmebus
  drivercore/dt: add a match table pointer to struct device
  dt: Typo fix.
  altera_ps2: Add devicetree support
  ...
2011-03-16 17:28:10 -07:00
Linus Torvalds
6445ced867 Merge branch 'staging-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging-2.6
* 'staging-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging-2.6: (961 commits)
  staging: hv: fix memory leaks
  staging: hv: Remove NULL check before kfree
  Staging: hv: Get rid of vmbus_child_dev_add()
  Staging: hv: Change the signature for vmbus_child_device_register()
  Staging: hv: Get rid of vmbus_cleanup() function
  Staging: hv: Get rid of vmbus_dev_rm() function
  Staging: hv: Change the signature for vmbus_on_isr()
  Staging: hv: Eliminate vmbus_event_dpc()
  Staging: hv: Get rid of the function vmbus_msg_dpc()
  Staging: hv: Change the signature for vmbus_cleanup()
  Staging: hv: Simplify root device management
  staging: rtl8192e: Don't copy dev pointer to skb
  staging: rtl8192e: Pass priv to cmdpkt functions
  staging: rtl8192e: Pass priv to firmware download functions
  staging: rtl8192e: Pass priv to rtl8192_interrupt
  staging: rtl8192e: Pass rtl8192_priv to dm functions
  staging: rtl8192e: Pass ieee80211_device to callbacks
  staging: rtl8192e: Pass ieee80211_device to callbacks
  staging: rtl8192e: Pass ieee80211_device to callbacks
  staging: rtl8192e: Pass ieee80211_device to callbacks
  ...
2011-03-16 15:19:35 -07:00
Linus Torvalds
e6bee325e4 Merge branch 'tty-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty-2.6
* 'tty-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty-2.6: (76 commits)
  pch_uart: reference clock on CM-iTC
  pch_phub: add new device ML7213
  n_gsm: fix UIH control byte : P bit should be 0
  n_gsm: add a documentation
  serial: msm_serial_hs: Add MSM high speed UART driver
  tty_audit: fix tty_audit_add_data live lock on audit disabled
  tty: move cd1865.h to drivers/staging/tty/
  Staging: tty: fix build with epca.c driver
  pcmcia: synclink_cs: fix prototype for mgslpc_ioctl()
  Staging: generic_serial: fix double locking bug
  nozomi: don't use flush_scheduled_work()
  tty/serial: Relax the device_type restriction from of_serial
  MAINTAINERS: Update HVC file patterns
  tty: phase out of ioctl file pointer for tty3270 as well
  tty: forgot to remove ipwireless from drivers/char/pcmcia/Makefile
  pch_uart: Fix DMA channel miss-setting issue.
  pch_uart: fix exclusive access issue
  pch_uart: fix auto flow control miss-setting issue
  pch_uart: fix uart clock setting issue
  pch_uart : Use dev_xxx not pr_xxx
  ...

Fix up trivial conflicts in drivers/misc/pch_phub.c (same patch applied
twice, then changes to the same area in one branch)
2011-03-16 15:11:04 -07:00
Linus Torvalds
971f115a50 Merge branch 'usb-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6
* 'usb-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6: (172 commits)
  USB: Add support for SuperSpeed isoc endpoints
  xhci: Clean up cycle bit math used during stalls.
  xhci: Fix cycle bit calculation during stall handling.
  xhci: Update internal dequeue pointers after stalls.
  USB: Disable auto-suspend for USB 3.0 hubs.
  USB: Remove bogus USB_PORT_STAT_SUPER_SPEED symbol.
  xhci: Return canceled URBs immediately when host is halted.
  xhci: Fixes for suspend/resume of shared HCDs.
  xhci: Fix re-init on power loss after resume.
  xhci: Make roothub functions deal with device removal.
  xhci: Limit roothub ports to 15 USB3 & 31 USB2 ports.
  xhci: Return a USB 3.0 hub descriptor for USB3 roothub.
  xhci: Register second xHCI roothub.
  xhci: Change xhci_find_slot_id_by_port() API.
  xhci: Refactor bus suspend state into a struct.
  xhci: Index with a port array instead of PORTSC addresses.
  USB: Set usb_hcd->state and flags for shared roothubs.
  usb: Make core allocate resources per PCI-device.
  usb: Store bus type in usb_hcd, not in driver flags.
  usb: Change usb_hcd->bandwidth_mutex to a pointer.
  ...
2011-03-16 15:04:26 -07:00
Dmitry Eremin-Solenikov
a8ecc860ef ARM: pxa25x_udc: stop handling gpio-vbus internally
Stop handling gpio-vbus internally. All boards that depended on this
functionality have been converted to use gpio-vbus tranceiver. All
new boards can use it right from the start. Drop unused code.

Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
2011-03-16 16:33:34 +08:00
Rafael J. Wysocki
aa33860158 PM: Remove CONFIG_PM_OPS
After redefining CONFIG_PM to depend on (CONFIG_PM_SLEEP ||
CONFIG_PM_RUNTIME) the CONFIG_PM_OPS option is redundant and can be
replaced with CONFIG_PM.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
2011-03-15 00:43:15 +01:00
Rafael J. Wysocki
4681b17154 USB / Hub: Do not call device_set_wakeup_capable() under spinlock
A subsequent patch will modify device_set_wakeup_capable() in such
a way that it will call functions which may sleep and therefore it
shouldn't be called under spinlocks.  In preparation to that, modify
usb_set_device_state() to avoid calling device_set_wakeup_capable()
under device_state_lock.

Tested-by: Minchan Kim <minchan.kim@gmail.com>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-03-15 00:43:14 +01:00
Paul Zimmerman
500132a0f2 USB: Add support for SuperSpeed isoc endpoints
Use the Mult and bMaxBurst values from the endpoint companion
descriptor to calculate the max length of an isoc transfer.

Add USB_SS_MULT macro to access Mult field of bmAttributes, at
Sarah's suggestion.

This patch should be queued for the 2.6.36 and 2.6.37 stable trees, since
those were the first kernels to have isochronous support for SuperSpeed
devices.

Signed-off-by: Paul Zimmerman <paulz@synopsys.com>
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Cc: stable@kernel.org
2011-03-13 18:23:57 -07:00
Sarah Sharp
ba0a4d9aaa xhci: Clean up cycle bit math used during stalls.
Use XOR to invert the cycle bit, instead of a more complicated
calculation.  Eliminate a check for the link TRB type in find_trb_seg().
We know that there will always be a link TRB at the end of a segment, so
xhci_segment->trbs[TRBS_PER_SEGMENT - 1] will always have a link TRB type.

Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Tested-by: Takashi Iwai <tiwai@suse.de>
2011-03-13 18:23:56 -07:00
Sarah Sharp
01a1fdb9a7 xhci: Fix cycle bit calculation during stall handling.
When an endpoint stalls, we need to update the xHCI host's internal
dequeue pointer to move it past the stalled transfer.  This includes
updating the cycle bit (TRB ownership bit) if we have moved the dequeue
pointer past a link TRB with the toggle cycle bit set.

When we're trying to find the new dequeue segment, find_trb_seg() is
supposed to keep track of whether we've passed any link TRBs with the
toggle cycle bit set.  However, this while loop's body

	while (cur_seg->trbs > trb ||
			&cur_seg->trbs[TRBS_PER_SEGMENT - 1] < trb) {

Will never get executed if the ring only contains one segment.
find_trb_seg() will return immediately, without updating the new cycle
bit.  Since find_trb_seg() has no idea where in the segment the TD that
stalled was, make the caller, xhci_find_new_dequeue_state(), check for
this special case and update the cycle bit accordingly.

This patch should be queued to kernels all the way back to 2.6.31.

Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Tested-by: Takashi Iwai <tiwai@suse.de>
Cc: stable@kernel.org
2011-03-13 18:23:54 -07:00
Sarah Sharp
bf161e85fb xhci: Update internal dequeue pointers after stalls.
When an endpoint stalls, the xHCI driver must move the endpoint ring's
dequeue pointer past the stalled transfer.  To do that, the driver issues
a Set TR Dequeue Pointer command, which will complete some time later.

Takashi was having issues with USB 1.1 audio devices that stalled, and his
analysis of the code was that the old code would not update the xHCI
driver's ring dequeue pointer after the command completes.  However, the
dequeue pointer is set in xhci_find_new_dequeue_state(), just before the
set command is issued to the hardware.

Setting the dequeue pointer before the Set TR Dequeue Pointer command
completes is a dangerous thing to do, since the xHCI hardware can fail the
command.  Instead, store the new dequeue pointer in the xhci_virt_ep
structure, and update the ring's dequeue pointer when the Set TR dequeue
pointer command completes.

While we're at it, make sure we can't queue another Set TR Dequeue Command
while the first one is still being processed.  This just won't work with
the internal xHCI state code.  I'm still not sure if this is the right
thing to do, since we might have a case where a driver queues multiple
URBs to a control ring, one of the URBs Stalls, and then the driver tries
to cancel the second URB.  There may be a race condition there where the
xHCI driver might try to issue multiple Set TR Dequeue Pointer commands,
but I would have to think very hard about how the Stop Endpoint and
cancellation code works.  Keep the fix simple until when/if we run into
that case.

This patch should be queued to kernels all the way back to 2.6.31.

Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Tested-by: Takashi Iwai <tiwai@suse.de>
Cc: stable@kernel.org
2011-03-13 18:23:53 -07:00
Sarah Sharp
0c9ffe0f62 USB: Disable auto-suspend for USB 3.0 hubs.
USB 3.0 devices have a slightly different suspend sequence than USB
2.0/1.1 devices.  There isn't support for USB 3.0 device suspend yet, so
make khubd leave autosuspend disabled for USB 3.0 hubs.  Make sure that
USB 3.0 roothubs still have autosuspend enabled, since that path in the
xHCI driver works fine.

Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
2011-03-13 18:23:51 -07:00
Sarah Sharp
131dec344d USB: Remove bogus USB_PORT_STAT_SUPER_SPEED symbol.
USB_PORT_STAT_SUPER_SPEED is a made up symbol that the USB core used to
track whether USB ports had a SuperSpeed device attached.  This is a
linux-internal symbol that was used when SuperSpeed and non-SuperSpeed
devices would show up under the same xHCI roothub.  This particular
port status is never returned by external USB 3.0 hubs.  (Instead they
have a USB_PORT_STAT_SPEED_5GBPS that uses a completely different speed
mask.)

Now that the xHCI driver registers two roothubs, USB 3.0 devices will only
show up under USB 3.0 hubs.  Rip out USB_PORT_STAT_SUPER_SPEED and replace
it with calls to hub_is_superspeed().

Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
2011-03-13 18:23:50 -07:00
Sarah Sharp
c6cc27c782 xhci: Return canceled URBs immediately when host is halted.
When the xHCI host controller is halted, it won't respond to commands
placed on the command ring.  So if an URB is cancelled after the first
roothub is deallocated, it will try to place a stop endpoint command on
the command ring, which will fail.  The command watchdog timer will fire
after five seconds, and the host controller will be marked as dying, and
all URBs will be completed.

Add a flag to the xHCI's internal state variable for when the host
controller is halted.  Immediately return the canceled URB if the host
controller is halted.

Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
2011-03-13 18:23:48 -07:00
Sarah Sharp
b320937972 xhci: Fixes for suspend/resume of shared HCDs.
Make sure the HCD_FLAG_HW_ACCESSIBLE flag is mirrored by both roothubs,
since it refers to whether the shared hardware is accessible.  Make sure
each bus is marked as suspended by setting usb_hcd->state to
HC_STATE_SUSPENDED when the PCI host controller is resumed.

Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
2011-03-13 18:23:47 -07:00
Sarah Sharp
65b22f93fd xhci: Fix re-init on power loss after resume.
When a host controller has lost power during a suspend, we must
reinitialize it.  Now that the xHCI host has two roothubs, xhci_run() and
xhci_stop() expect to be called with both usb_hcd structures.  Be sure
that the re-initialization code in xhci_resume() mirrors the process the
USB PCI probe function uses.

Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
2011-03-13 18:23:45 -07:00
Sarah Sharp
f9de815187 xhci: Make roothub functions deal with device removal.
Return early in the roothub control and status functions if the xHCI host
controller is not electrically present in the system (register reads
return all "fs").  This issue only shows up when the xHCI driver registers
two roothubs and the host controller is removed from the system.

Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
2011-03-13 18:23:44 -07:00
Sarah Sharp
d30b2a2081 xhci: Limit roothub ports to 15 USB3 & 31 USB2 ports.
The USB core allocates a USB 2.0 roothub descriptor that has room for 31
(USB_MAXCHILDREN) ports' worth of DeviceRemovable and PortPwrCtrlMask
fields.  Limit the number of USB 2.0 roothub ports accordingly.  I don't
expect to run into this limitation ever, but this prevents a buffer
overflow issue in the roothub descriptor filling code.

Similarly, a USB 3.0 hub can only have 15 downstream ports, so limit the
USB 3.0 roothub to 15 USB 3.0 ports.

Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
2011-03-13 18:23:42 -07:00
Sarah Sharp
4bbb0ace9a xhci: Return a USB 3.0 hub descriptor for USB3 roothub.
Return the correct xHCI roothub descriptor, based on whether the roothub
is marked as USB 3.0 or USB 2.0 in usb_hcd->bcdUSB.  Fill in
DeviceRemovable for the USB 2.0 and USB 3.0 roothub descriptors, using the
Device Removable bit in the port status and control registers.  xHCI is
the first host controller to actually properly set these bits (other hosts
say all devices are removable).

When userspace asks for a USB 2.0-style hub descriptor for the USB 3.0
roothub, stall the endpoint.  This is what real external USB 3.0 hubs do,
and we don't want to return a descriptor that userspace didn't ask for.

The USB core is already fixed to always ask for USB 3.0-style hub
descriptors.  Only usbfs (typically lsusb) will ask for the USB 2.0-style
hub descriptors.  This has already been fixed in usbutils version 0.91,
but the kernel needs to deal with older usbutils versions.

Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
2011-03-13 18:23:41 -07:00
Sarah Sharp
f6ff0ac878 xhci: Register second xHCI roothub.
This patch changes the xHCI driver to allocate two roothubs.  This touches
the driver initialization and shutdown paths, roothub emulation code, and
port status change event handlers.  This is a rather large patch, but it
can't be broken up, or it would break git-bisect.

Make the xHCI driver register its own PCI probe function.  This will call
the USB core to create the USB 2.0 roothub, and then create the USB 3.0
roothub.  This gets the code for registering a shared roothub out of the
USB core, and allows other HCDs later to decide if and how many shared
roothubs they want to allocate.

Make sure the xHCI's reset method marks the xHCI host controller's primary
roothub as the USB 2.0 roothub.  This ensures that the high speed bus will
be processed first when the PCI device is resumed, and any USB 3.0 devices
that have migrated over to high speed will migrate back after being reset.
This ensures that USB persist works with these odd devices.

The reset method will also mark the xHCI USB2 roothub as having an
integrated TT.  Like EHCI host controllers with a "rate matching hub" the
xHCI USB 2.0 roothub doesn't have an OHCI or UHCI companion controller.
It doesn't really have a TT, but we'll lie and say it has an integrated
TT.  We need to do this because the USB core will reject LS/FS devices
under a HS hub without a TT.

Other details:
-------------

The roothub emulation code is changed to return the correct number of
ports for the two roothubs.  For the USB 3.0 roothub, it only reports the
USB 3.0 ports.  For the USB 2.0 roothub, it reports all the LS/FS/HS
ports.  The code to disable a port now checks the speed of the roothub,
and refuses to disable SuperSpeed ports under the USB 3.0 roothub.

The code for initializing a new device context must be changed to set the
proper roothub port number.  Since we've split the xHCI host into two
roothubs, we can't just use the port number in the ancestor hub.  Instead,
we loop through the array of hardware port status register speeds and find
the Nth port with a similar speed.

The port status change event handler is updated to figure out whether the
port that reported the change is a USB 3.0 port, or a non-SuperSpeed port.
Once it figures out the port speed, it kicks the proper roothub.

The function to find a slot ID based on the port index is updated to take
into account that the two roothubs will have over-lapping port indexes.
It checks that the virtual device with a matching port index is the same
speed as the passed in roothub.

There's also changes to the driver initialization and shutdown paths:

 1. Make sure that the xhci_hcd pointer is shared across the two
    usb_hcd structures.  The xhci_hcd pointer is allocated and the
    registers are mapped in when xhci_pci_setup() is called with the
    primary HCD.  When xhci_pci_setup() is called with the non-primary
    HCD, the xhci_hcd pointer is stored.

 2. Make sure to set the sg_tablesize for both usb_hcd structures.  Set
    the PCI DMA mask for the non-primary HCD to allow for 64-bit or 32-bit
    DMA.  (The PCI DMA mask is set from the primary HCD further down in
    the xhci_pci_setup() function.)

 3. Ensure that the host controller doesn't start kicking khubd in
    response to port status changes before both usb_hcd structures are
    registered.  xhci_run() only starts the xHC running once it has been
    called with the non-primary roothub.  Similarly, the xhci_stop()
    function only halts the host controller when it is called with the
    non-primary HCD.  Then on the second call, it resets and cleans up the
    MSI-X irqs.

Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
2011-03-13 18:23:39 -07:00
Sarah Sharp
5233630fcd xhci: Change xhci_find_slot_id_by_port() API.
xhci_find_slot_id_by_port() tries to map the port index to the slot ID for
the USB device.  In the future, there will be two xHCI roothubs, and their
port indices will overlap.  Therefore, xhci_find_slot_id_by_port() will
need to use information in the roothub's usb_hcd structure to map the port
index and roothub speed to the right slot ID.

Add a new parameter to xhci_find_slot_id_by_port(), in order to pass in
the roothub's usb_hcd structure.

Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
2011-03-13 18:23:38 -07:00
Sarah Sharp
20b67cf51f xhci: Refactor bus suspend state into a struct.
There are several variables in the xhci_hcd structure that are related to
bus suspend and resume state.  There are a couple different port status
arrays that are accessed by port index.  Move those variables into a
separate structure, xhci_bus_state.  Stash that structure in xhci_hcd.

When we have two roothhubs that can be suspended and resumed separately,
we can have two xhci_bus_states, and index into the port arrays in each
structure with the fake roothub port index (not the real hardware port
index).

Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
2011-03-13 18:23:36 -07:00
Sarah Sharp
5308a91b9f xhci: Index with a port array instead of PORTSC addresses.
In the upcoming patches, the roothub emulation code will need to return
port status and port change buffers based on whether they are called with
the xHCI USB 2.0 or USB 3.0 roothub.  To facilitate that, make the roothub
code index into an array of port addresses with wIndex, rather than
calculating the address using the offset and the address of the PORTSC
registers.  Later we can set the port array to be the array of USB 3.0
port addresses, or the USB 2.0 port addresses, depending on the roothub
passed in.

Create a temporary (statically sized) port array and fill it in with both
USB 3.0 and USB 2.0 port addresses.  This is inefficient to do for every
roothub call, but this is needed for git bisect compatibility.  The
temporary port array will be deleted in a subsequent patch.

Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
2011-03-13 18:23:35 -07:00
Sarah Sharp
ff9d78b36f USB: Set usb_hcd->state and flags for shared roothubs.
The hcd->flags are in a sorry state.  Some of them are clearly specific to
the particular roothub (HCD_POLL_RH, HCD_POLL_PENDING, and
HCD_WAKEUP_PENDING), but some flags are related to PCI device state
(HCD_HW_ACCESSIBLE and HCD_SAW_IRQ).  This is an issue when one PCI device
can have two roothubs that share the same IRQ line and hardware.

Make sure to set HCD_FLAG_SAW_IRQ for both roothubs when an interrupt is
serviced, or an URB is unlinked without an interrupt.  (We can't tell if
the host actually serviced an interrupt for a particular bus, but we can
tell it serviced some interrupt.)

HCD_HW_ACCESSIBLE is set once by usb_add_hcd(), which is set for both
roothubs as they are added, so it doesn't need to be modified.
HCD_POLL_RH and HCD_POLL_PENDING are only checked by the USB core, and
they are never set by the xHCI driver, since the roothub never needs to be
polled.

The usb_hcd's state field is a similar mess.  Sometimes the state applies
to the underlying hardware: HC_STATE_HALT, HC_STATE_RUNNING, and
HC_STATE_QUIESCING.  But sometimes the state refers to the roothub state:
HC_STATE_RESUMING and HC_STATE_SUSPENDED.

Alan Stern recently made the USB core not rely on the hcd->state variable.
Internally, the xHCI driver still checks for HC_STATE_SUSPENDED, so leave
that code in.  Remove all references to HC_STATE_HALT, since the xHCI
driver only sets and doesn't test those variables.  We still have to set
HC_STATE_RUNNING, since Alan's patch has a bug that means the roothub
won't get registered if we don't set that.

Alan's patch made the USB core check a different variable when trying to
determine whether to suspend a roothub.  The xHCI host has a split
roothub, where two buses are registered for one PCI device.  Each bus in
the xHCI split roothub can be suspended separately, but both buses must be
suspended before the PCI device can be suspended.  Therefore, make sure
that the USB core checks HCD_RH_RUNNING() for both roothubs before
suspending the PCI host.

Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
2011-03-13 18:23:33 -07:00
Sarah Sharp
c563543784 usb: Make core allocate resources per PCI-device.
Introduce the notion of a PCI device that may be associated with more than
one USB host controller driver (struct usb_hcd).  This patch is the start
of the work to separate the xHCI host controller into two roothubs: a USB
3.0 roothub with SuperSpeed-only ports, and a USB 2.0 roothub with
HS/FS/LS ports.

One usb_hcd structure is designated to be the "primary HCD", and a pointer
is added to the usb_hcd structure to keep track of that.  A new function
call, usb_hcd_is_primary_hcd() is added to check whether the USB hcd is
marked as the primary HCD (or if it is not part of a roothub pair).  To
allow the USB core and xHCI driver to access either roothub in a pair, a
"shared_hcd" pointer is added to the usb_hcd structure.

Add a new function, usb_create_shared_hcd(), that does roothub allocation
for paired roothubs.  It will act just like usb_create_hcd() did if the
primary_hcd pointer argument is NULL.  If it is passed a non-NULL
primary_hcd pointer, it sets usb_hcd->shared_hcd and usb_hcd->primary_hcd
fields.  It will also skip the bandwidth_mutex allocation, and set the
secondary hcd's bandwidth_mutex pointer to the primary HCD's mutex.

IRQs are only allocated once for the primary roothub.

Introduce a new usb_hcd driver flag that indicates the host controller
driver wants to create two roothubs.  If the HCD_SHARED flag is set, then
the USB core PCI probe methods will allocate a second roothub, and make
sure that second roothub gets freed during rmmod and in initialization
error paths.

When usb_hc_died() is called with the primary HCD, make sure that any
roothubs that share that host controller are also marked as being dead.

Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
2011-03-13 18:23:06 -07:00
Sarah Sharp
83de4b2b90 usb: Store bus type in usb_hcd, not in driver flags.
The xHCI driver essentially has both a USB 2.0 and a USB 3.0 roothub.  So
setting the HCD_USB3 bits in the hcd->driver->flags is a bit misleading.
Add a new field to usb_hcd, bcdUSB.  Store the result of
hcd->driver->flags & HCD_MASK in it.  Later, when we have the xHCI driver
register the two roothubs, we'll set the usb_hcd->bcdUSB field to HCD_USB2
for the USB 2.0 roothub, and HCD_USB3 for the USB 3.0 roothub.

Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
2011-03-13 18:07:15 -07:00
Sarah Sharp
d673bfcbff usb: Change usb_hcd->bandwidth_mutex to a pointer.
Change the bandwith_mutex in struct usb_hcd to a pointer.  This will allow
the pointer to be shared across usb_hcds for the upcoming work to split
the xHCI driver roothub into a USB 2.0/1.1 and a USB 3.0 bus.

Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
2011-03-13 18:07:14 -07:00
Sarah Sharp
23e0d1066f usb: Refactor irq enabling out of usb_add_hcd()
Refactor out the code in usb_add_hcd() to request the IRQ line for the
HCD.  This will only need to be called once for the two xHCI roothubs, so
it's easier to refactor it into a function, rather than wrapping the long
if-else block into another if statement.

Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
2011-03-13 18:07:14 -07:00
Sarah Sharp
8766c81560 usb: Make usb_hcd_pci_probe labels more descriptive.
Make the labels for the goto statements in usb_hcd_pci_probe()
describe the cleanup they do, rather than being numbered err[1-4].
This makes it easier to add error handling later.

The error handling for this function looks a little fishy, since
set_hs_companion() isn't called until the very end of the function, and
clear_hs_companion() is called if this function fails earlier than that.
But it should be harmless to clear a NULL pointer, so leave the error
handling as-is.

Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
2011-03-13 18:07:14 -07:00
Sarah Sharp
b02d0ed677 xhci: Change hcd_priv into a pointer.
Instead of allocating space for the whole xhci_hcd structure at the end of
usb_hcd, make the USB core allocate enough space for a pointer to the
xhci_hcd structure.  This will make it easy to share the xhci_hcd
structure across the two roothubs (the USB 3.0 usb_hcd and the USB 2.0
usb_hcd).

Deallocate the xhci_hcd at PCI remove time, so the hcd_priv will be
deallocated after the usb_hcd is deallocated.  We do this by registering a
different PCI remove function that calls the usb_hcd_pci_remove()
function, and then frees the xhci_hcd.  usb_hcd_pci_remove() calls
kput() on the usb_hcd structure, which will deallocate the memory that
contains the hcd_priv pointer, but not the memory it points to.

Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
2011-03-13 18:07:13 -07:00
Sarah Sharp
214f76f7d9 xhci: Always use usb_hcd in URB instead of converting xhci_hcd.
Make sure to call into the USB core's link, unlink, and giveback URB
functions with the usb_hcd pointer found by using urb->dev->bus.  This
will avoid confusion later, when the xHCI driver will deal with URBs from
two separate buses (the USB 3.0 roothub and the faked USB 2.0 roothub).

Assume xhci_urb_dequeue() will be called with the proper usb_hcd.

Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
2011-03-13 18:07:13 -07:00
Sarah Sharp
aa1b13efb7 xhci: Modify check for TT info.
Commit d199c96d by Alan Stern ensured that low speed and full speed
devices below a high speed hub without a transaction translator (TT) would
never get enumerated.  Simplify the check for a TT in the xHCI virtual
device allocation to only check if the usb_device references a parent's
TT.

Make sure not to set the TT information on LS/FS devices directly
connected to the roothub.  The xHCI host doesn't really have a TT, and the
host will throw an error when those virtual device TT fields are set for a
device connected to the roothub.  We need this check because the xHCI
driver will shortly register two roothubs: a USB 2.0 roothub and a USB 3.0
roothub.

Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
2011-03-13 18:07:12 -07:00
Sarah Sharp
22c6a35d41 usb: Make USB 3.0 roothub have a SS EP comp descriptor.
Make the USB 3.0 roothub registered by the USB core have a SuperSpeed
Endpoint Companion Descriptor after the interrupt endpoint.  All USB 3.0
devices are required to have this, and the USB 3.0 bus specification
(section 10.13.1) says which values the descriptor should have.

Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
2011-03-13 18:07:12 -07:00
Sarah Sharp
c706157409 USB: Clear "warm" port reset change.
In USB 3.0, there are two types of resets: a "hot" port reset and a "warm"
port reset.  The hot port reset is always tried first, and involves
sending the reset signaling for a shorter amount of time.  But sometimes
devices don't respond to the hot reset, and a "Bigger Hammer" is needed.

External hubs and roothubs will automatically try a warm reset when the
hot reset fails, and they will set a status change bit to indicate when
there is a "BH reset" change.  Make sure the USB core clears that port
status change bit, or we'll get lots of status change notifications on the
interrupt endpoint of the USB 3.0 hub.

(Side note: you may be confused why the USB 3.0 spec calls the same type
of reset "warm reset" in some places and "BH reset" in other places.  "BH"
reset is supposed to stand for "Big Hammer" reset, but it also stands for
"Brad Hosler".  Brad died shortly after the USB 3.0 bus specification was
started, and they decided to name the reset after him.  The suggestion was
made shortly before the spec was finalized, so the wording is a bit
inconsistent.)

Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
2011-03-13 18:07:12 -07:00
John Youn
dbe79bbe9d USB 3.0 Hub Changes
Update the USB core to deal with USB 3.0 hubs.  These hubs have a slightly
different hub descriptor than USB 2.0 hubs, with a fixed (rather than
variable length) size.  Change the USB core's hub descriptor to have a
union for the last fields that differ.  Change the host controller drivers
that access those last fields (DeviceRemovable and PortPowerCtrlMask) to
use the union.

Translate the new version of the hub port status field into the old
version that khubd understands.  (Note: we need to fix it to translate the
roothub's port status once we stop converting it to USB 2.0 hub status
internally.)

Add new code to handle link state change status.  Send out new control
messages that are needed for USB 3.0 hubs, like Set Hub Depth.

This patch is a modified version of the original patch submitted by John
Youn.  It's updated to reflect the removal of the "bitmap" #define, and
change the hub descriptor accesses of a couple new host controller
drivers.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Cc: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
Cc: Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
Cc: Tony Olech <tony.olech@elandigitalsystems.com>
Cc: "Robert P. J. Day" <rpjday@crashcourse.ca>
Cc: Max Vozeler <mvz@vozeler.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Cc: Rodolfo Giometti <giometti@linux.it>
Cc: Mike Frysinger <vapier@gentoo.org>
Cc: Anton Vorontsov <avorontsov@mvista.com>
Cc: Sebastian Siewior <bigeasy@linutronix.de>
Cc: Lothar Wassmann <LW@KARO-electronics.de>
Cc: Olav Kongas <ok@artecdesign.ee>
Cc: Martin Fuzzey <mfuzzey@gmail.com>
Cc: Alan Stern <stern@rowland.harvard.edu>
Cc: David Brownell <dbrownell@users.sourceforge.net>
2011-03-13 18:07:11 -07:00
Sarah Sharp
ad73dff32e xhci: Remove references to HC_STATE_RUNNING.
The USB core will set hcd->state to HC_STATE_RUNNING before calling
xhci_run, so there's no point in setting it twice.  The USB core also
doesn't pay attention to HC_STATE_RUNNING on the resume path anymore; it
uses HCD_RH_RUNNING(), which looks at hcd->flags & (1U <<
HCD_FLAG_RH_RUNNING.  Therefore, it's safe to remove the state set in
xhci_bus_resume().

Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
2011-03-13 18:07:10 -07:00
Sarah Sharp
4814030ce1 usb: Initialize hcd->state roothubs.
We would like to allow host controller drivers to stop using hcd->state.
Unfortunately, some host controller drivers use hcd->state as an
implicit way of telling the core that a controller has died.  The
roothub registration functions must assume the host died if hcd->state
equals HC_STATE_HALT.

To facilitate drivers that don't want to set hcd->state to
HC_STATE_RUNNING in their initialization routines, we set the state to
running before calling the host controller's start function.

Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
2011-03-13 18:07:10 -07:00
Sarah Sharp
ac04e6ff3e xhci: Remove references to HC_STATE_HALT.
The xHCI driver doesn't ever test hcd->state for HC_STATE_HALT.  The USB
core recently stopped using it internally, so there's no point in setting
it in the driver.  We still need to set HC_STATE_RUNNING in order to make
it past the USB core's hcd->state check in register_roothub().

Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
2011-03-13 18:07:10 -07:00
Andiry Xu
bdfca5025a xHCI: prolong host controller halt time limit
xHCI 1.0 spec specifies the xHC shall halt within 16ms after software clears
Run/Stop bit. In xHCI 0.96 spec the time limit is 16 microframes (2ms), it's
too short and often cause dmesg shows "Host controller not halted, aborting
reset." message when rmmod xhci-hcd.

Modify the time limit to comply with xHCI 1.0 specification and prevents the
warning message showing when remove xhci-hcd.

Signed-off-by: Andiry Xu <andiry.xu@amd.com>
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
2011-03-13 18:07:09 -07:00
Andiry Xu
019a35f114 xHCI: Remove redundant variable in xhci_resume()
Set hcd->state = HC_STATE_SUSPENDED if there is a power loss during system
resume or the system is hibernated, otherwise leave it be. The variable
old_state is redundant and made an unreachable code path, so remove it.

Signed-off-by: Andiry Xu <andiry.xu@amd.com>
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
2011-03-13 18:07:09 -07:00
Sarah Sharp
518e848ea8 xhci: Rename variables and reduce register reads.
The xhci_bus_suspend() and xhci_bus_resume() functions are a bit hard to
read, because they have an ambiguously named variable "port".  Rename it
to "port_index".  Introduce a new temporary variable, "max_ports" that
holds the maximum number of roothub ports the host controller supports.
This will reduce the number of register reads, and make it easy to change
the maximum number of ports when there are two roothubs.

Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
2011-03-13 18:07:08 -07:00
Sarah Sharp
1d5810b692 xhci: Rework port suspend structures for limited ports.
The USB core only allows up to 31 (USB_MAXCHILDREN) ports under a roothub.
The xHCI driver keeps track of which ports are suspended, which ports have
a suspend change bit set, and what time the port will be done resuming.
It keeps track of the first two by setting a bit in a u32 variable,
suspended_ports or port_c_suspend.  The xHCI driver currently assumes we
can have up to 256 ports under a roothub, so it allocates an array of 8
u32 variables for both suspended_ports and port_c_suspend.  It also
allocates a 256-element array to keep track of when the ports will be done
resuming.

Since we can only have 31 roothub ports, we only need to use one u32 for
each of the suspend state and change variables.  We simplify the bit math
that's trying to index into those arrays and set the correct bit, if we
assume wIndex never exceeds 30.  (wIndex is zero-based after it's
decremented from the value passed in from the USB core.)  Finally, we
change the resume_done array to only hold 31 elements.

Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Cc: Andiry Xu <andiry.xu@amd.com>
2011-03-13 18:07:08 -07:00
Sarah Sharp
abc4f9b099 USB: Fix usb_add_hcd() checkpatch errors.
The irq enabling code is going to be refactored into a new function, so
clean up some checkpatch errors before moving it.

Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
2011-03-13 18:07:08 -07:00
Sarah Sharp
da13051cc7 USB: Remove bitmap #define from hcd.h
Using a #define to redefine a common variable name is a bad thing,
especially when the #define is in a header.  include/linux/usb/hcd.h
redefined bitmap to DeviceRemovable to avoid typing a long field in the
hub descriptor.  This has unintended side effects for files like
drivers/usb/core/devio.c that include that file, since another header
included after hcd.h has different variables named bitmap.

Remove the bitmap #define and replace instances of it in the host
controller code.  Cleanup the spaces around function calls and square
brackets while we're at it.

Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Cc: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
Cc: Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
Cc: Tony Olech <tony.olech@elandigitalsystems.com>
Cc: "Robert P. J. Day" <rpjday@crashcourse.ca>
Cc: Max Vozeler <mvz@vozeler.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Cc: Rodolfo Giometti <giometti@linux.it>
Cc: Mike Frysinger <vapier@gentoo.org>
Cc: Anton Vorontsov <avorontsov@mvista.com>
Cc: Sebastian Siewior <bigeasy@linutronix.de>
Cc: Lothar Wassmann <LW@KARO-electronics.de>
Cc: Olav Kongas <ok@artecdesign.ee>
Cc: Martin Fuzzey <mfuzzey@gmail.com>
Cc: Alan Stern <stern@rowland.harvard.edu>
Cc: David Brownell <dbrownell@users.sourceforge.net>
2011-03-13 18:07:07 -07:00
Sarah Sharp
0b8ca72a23 xhci: Remove old no-op test.
The test of placing a number of command no-ops on the command ring and
counting the number of no-op events that were generated was only used
during the initial xHCI driver bring up.  This test is no longer used, so
delete it.

Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
2011-03-13 18:07:07 -07:00
Sarah Sharp
db7c7c0aee usb: Always return 0 or -EBUSY to the runtime PM core.
The PM core reacts badly when the return code from usb_runtime_suspend()
is not 0, -EAGAIN, or -EBUSY.  The PM core regards this as a fatal error,
and refuses to run anymore PM helper functions.  In particular,
usbfs_open() and other usbfs functions will fail because the PM core will
return an error code when usb_autoresume_device() is called.  This causes
libusb and/or lsusb to either hang or segfault.

If a USB device cannot suspend for some reason (e.g. a hub doesn't report
it has remote wakeup capabilities), we still want lsusb and other
userspace programs to work.  So return -EBUSY, which will fill people's
log files with failed tries, but will ensure userspace still works.

Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
2011-03-13 18:07:07 -07:00
Russell King
8688a1a863 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/tglx/linux-2.6-tcc into devel-stable 2011-03-12 20:33:51 +00:00
Randy Dunlap
e49c459c33 usb-storage: fix menu ordering
Move the USB_STORAGE_ENE_UB6250 entry so that it stays under the
USB_STORAGE menu.

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-03-11 14:26:09 -08:00
Randy Dunlap
0074f59b51 usb-storage: ene_ub6250 depends on USB_STORAGE
Fix ene_ub6250 build: it uses usb_storage driver interfaces, so it
should depend on USB_STORAGE.

ene_ub6250.c:(.text+0x14ff19): undefined reference to `usb_stor_reset_resume'
ene_ub6250.c:(.text+0x14ffb1): undefined reference to `usb_stor_bulk_transfer_buf'
ene_ub6250.c:(.text+0x14ffdd): undefined reference to `usb_stor_bulk_srb'
ene_ub6250.c:(.text+0x14fff1): undefined reference to `usb_stor_bulk_transfer_sg'
ene_ub6250.c:(.text+0x1503dd): undefined reference to `usb_stor_set_xfer_buf'
ene_ub6250.c:(.text+0x15048e): undefined reference to `usb_stor_access_xfer_buf'
ene_ub6250.c:(.text+0x150723): undefined reference to `usb_stor_probe1'
ene_ub6250.c:(.text+0x150795): undefined reference to `usb_stor_probe2'
ene_ub6250.c:(.text+0x1507af): undefined reference to `usb_stor_disconnect'
drivers/built-in.o:(.data+0x10224): undefined reference to `usb_stor_suspend'
drivers/built-in.o:(.data+0x10230): undefined reference to `usb_stor_pre_reset'
drivers/built-in.o:(.data+0x10234): undefined reference to `usb_stor_post_reset'

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-03-11 14:26:08 -08:00
Dan Carpenter
8b0fb6f872 USB: ene_ub6250: fix memory leak in ene_load_bincode()
"buf" gets allocated twice in a row.  It's the second allocation which
is correct.  The first one should be removed.

Signed-off-by: Dan Carpenter <error27@gmail.com>
Acked-by: huajun li <huajun.li.lee@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-03-11 14:26:08 -08:00
Robert Morell
fbf9865c6d USB: ehci: tegra: Align DMA transfers to 32 bytes
The Tegra2 USB controller doesn't properly deal with misaligned DMA
buffers, causing corruption.  This is especially prevalent with USB
network adapters, where skbuff alignment is often in the middle of a
4-byte dword.

To avoid this, allocate a temporary buffer for the DMA if the provided
buffer isn't sufficiently aligned.

Signed-off-by: Robert Morell <rmorell@nvidia.com>
Signed-off-by: Benoit Goby <benoit@android.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-03-11 14:22:12 -08:00
Benoit Goby
79ad3b5add usb: host: Add EHCI driver for NVIDIA Tegra SoCs
The Tegra 2 SoC has 3 EHCI compatible USB controllers. This patch adds
the necessary glue to allow the ehci-hcd driver to work on Tegra 2
SoCs.

The platform data is used to configure board-specific phy settings and
to configure the operating mode, as one of the ports may be used as a otg
port. For additional power saving, the driver supports powering down the
phy on bus suspend when it is used, for example, to connect an internal
device that use an out-of-band remote wakeup mechanism (e.g. a gpio).

Signed-off-by: Benoit Goby <benoit@android.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-03-11 14:22:11 -08:00
Benoit Goby
ee398ba97d usb: otg: Add ulpi viewport access ops
Add generic access ops for controllers with a ulpi viewport register
(e.g. Chipidea/ARC based controllers).

Signed-off-by: Benoit Goby <benoit@android.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-03-11 14:22:10 -08:00
wangyanqing
d078138303 USB: serial: ch341: add new id
I picked up a new DAK-780EX(professional digitl reverb/mix system),
which use CH341T chipset to communication with computer on 3/2011
and the CH341T's vendor code is 1a86

Looking up the CH341T's vendor and product id's I see:

1a86  QinHeng Electronics
  5523  CH341 in serial mode, usb to serial port converter

CH341T,CH341 are the products of the same company, maybe
have some common hardware, and I test the ch341.c works
well with CH341T

Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: stable <stable@kernel.org>

Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-03-11 14:21:17 -08:00
Paul Bolle
752d57a8b7 USB: Only treat lasting over-current conditions as errors
On a laptop I see these errors on (most) resumes:
    hub 3-0:1.0: over-current change on port 1
    hub 3-0:1.0: over-current change on port 2

Since over-current conditions can disappear quite quickly it's better to
downgrade that message to debug level, recheck for an over-current
condition a little later and only print and over-current condition error
if that condition (still) exists when it's rechecked.

Add similar logic to hub over-current changes. (That code is untested,
as those changes do not occur on this laptop.)

Signed-off-by: Paul Bolle <pebolle@tiscali.nl>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-03-11 14:18:52 -08:00
Hubert Feurstein
0dfeefbc93 ehci-atmel: fix section mismatch warning
Fix the following section mismatch warning:

WARNING: drivers/usb/built-in.o(.data+0x74c): Section mismatch in reference from the variable ehci_atmel_driver to the function .init.text:ehci_atmel_drv_probe()
The variable ehci_atmel_driver references
the function __init ehci_atmel_drv_probe()
If the reference is valid then annotate the
variable with __init* or __refdata (see linux/init.h) or name the variable:
*_template, *_timer, *_sht, *_ops, *_probe, *_probe_one, *_console,

Signed-off-by: Hubert Feurstein <h.feurstein@gmail.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-03-11 14:18:52 -08:00
Tony Lindgren
94a06b74e7 Merge branch 'for_2.6.39/pm-misc' of ssh://master.kernel.org/pub/scm/linux/kernel/git/khilman/linux-omap-pm into omap-for-linus 2011-03-10 18:54:14 -08:00
Russell King
3afdb0f352 Merge branch 'for-rmk' of git://git.pengutronix.de/git/imx/linux-2.6 into devel-stable 2011-03-10 13:53:29 +00:00
JF Argentino
b88ccf6f97 USB: serial: ftdi_sio: adding support for OLIMEX ARM-USB-OCD-H
Adding support for the OLIMEX ARM-USB-OCD-H JTAG device (id 15ba:002b)
based on FTDI FT2232H

Signed-off-by: JF Argentino <jf.argentino@free.fr>
Acked-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-03-09 15:40:05 -08:00
Herton Ronaldo Krzesinski
7a89e4cb9c USB: serial: option: Apply OPTION_BLACKLIST_SENDSETUP also for ZTE MF626
On https://bugs.launchpad.net/ubuntu/+source/linux/+bug/636091, one of
the cases reported is a big timeout on option_send_setup, which causes
some side effects as tty_lock is held. Looks like some of ZTE MF626
devices also don't like the RTS/DTR setting in option_send_setup, like
with 4G XS Stick W14. The reporter confirms which this it solves the
long freezes in his system.

Signed-off-by: Herton Ronaldo Krzesinski <herton.krzesinski@canonical.com>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-03-09 15:40:05 -08:00
Hao Wu
1f15318cda USB OTG Langwell: use simple IPC command to control VBus power.
Direct access to PMIC register is not safe and will impact battery
charging. New IPC command supported in SCU FW for VBus power control.
USB OTG driver will switch to such commands instead of direct access
to PMIC register for safety and SCU FW will handle the actual work
after got the request(IPC command).

Due to this change, usb driver should wait more time for sync OTGSC
with USBCFG by SCU. Update wait time from 2ms to 5ms.

Signed-off-by: Hao Wu <hao.wu@intel.com>
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-03-09 15:40:04 -08:00
huajun li
41e568d14e Staging: Merge ENE UB6250 SD card codes from keucr to drivers/usb/storage
The usb portion of this driver can now go into drivers/usb/storage.
This leaves the non-usb portion of the code still in staging.

Signed-off-by: Huajun Li <huajun.li.lee@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-03-07 13:40:59 -08:00
Lars-Peter Clausen
a74022a55e USB: s3c2410_udc: Add common implementation for GPIO controlled pullups
Currently all boards using the s3c2410_udc driver use a GPIO to control the
state of the pullup, as a result the same code is reimplemented in each board
file.
This patch adds support for using a GPIO to control the pullup state to the udc
driver, so the boards can use a common implementation.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-03-07 12:23:22 -08:00
Sergei Shtylyov
fa417c369b USB: OHCI: use pci_dev->revision
Commit ab1666c136 (USB: quirk PLL power down mode)
added code that reads the revision ID from the PCI configuration register while
it's stored by PCI subsystem in the 'revision' field of 'struct pci_dev'...

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-03-07 12:15:21 -08:00
Pavankumar Kondeti
dfb2130c45 USB: Rename "msm72k_otg.c" to "msm_otg.c"
This driver is used across all MSM SoCs.  Hence give a generic name.
All Functions and strutures are also using "msm_otg" as prefix.

Signed-off-by: Pavankumar Kondeti <pkondeti@codeaurora.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-03-07 12:15:21 -08:00
Arvid Brodin
d3cf2a8d4d usb/isp1760: Fix crash when unplugging bug
This fixes a problem with my previous patch series where there's a great
risk that the kernel will crash when unplugging interrupt devices from
the USB port. These lines must have got missing when I rebased the
patches from the older kernel I was working with to 2.6.37 and 2.6-next:

This fixes a bug where the kernel may crash if you unplug a USB device
that has active interrupt transfers.

Signed-off-by: Arvid Brodin <arvid.brodin@enea.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-03-07 12:14:07 -08:00
Alan Stern
9b37596a2e USB: move usbcore away from hcd->state
The hcd->state variable is a disaster.  It's not clearly owned by
either usbcore or the host controller drivers, and they both change it
from time to time, potentially stepping on each other's toes.  It's
not protected by any locks.  And there's no mechanism to prevent it
from going through an invalid transition.

This patch (as1451) takes a first step toward fixing these problems.
As it turns out, usbcore uses hcd->state for essentially only two
things: checking whether the controller's root hub is running and
checking whether the controller has died.  Therefore the patch adds
two new atomic bitflags to the hcd structure, to store these pieces of
information.  The new flags are used only by usbcore, and a private
spinlock prevents invalid combinations (a dead controller's root hub
cannot be running).

The patch does not change the places where usbcore sets hcd->state,
since HCDs may depend on them.  Furthermore, there is one place in
usb_hcd_irq() where usbcore still must use hcd->state: An HCD's
interrupt handler can implicitly indicate that the controller died by
setting hcd->state to HC_STATE_HALT.  Nevertheless, the new code is a
big improvement over the current code.

The patch makes one other change.  The hcd_bus_suspend() and
hcd_bus_resume() routines now check first whether the host controller
has died; if it has then they return immediately without calling the
HCD's bus_suspend or bus_resume methods.

This fixes the major problem reported in Bugzilla #29902: The system
fails to suspend after a host controller dies during system resume.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Tested-by: Alex Terekhov <a.terekhov@gmail.com>
CC: <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-03-07 12:14:06 -08:00
Richard Zhao
c23eb89ef7 ARM: imx3x: clean up ARCH_MX3X
Move to SOC_SOC_IMX3X.
Leave ARCH_MX31/35 definitions there, in case some place prevent multi-soc
single image.

Signed-off-by: Richard Zhao <richard.zhao@freescale.com>
Acked-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
2011-03-07 19:29:43 +01:00
Linus Torvalds
4438a02fc4 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (42 commits)
  MAINTAINERS: Add Andy Gospodarek as co-maintainer.
  r8169: disable ASPM
  RxRPC: Fix v1 keys
  AF_RXRPC: Handle receiving ACKALL packets
  cnic: Fix lost interrupt on bnx2x
  cnic: Prevent status block race conditions with hardware
  net: dcbnl: check correct ops in dcbnl_ieee_set()
  e1000e: disable broken PHY wakeup for ICH10 LOMs, use MAC wakeup instead
  igb: fix sparse warning
  e1000: fix sparse warning
  netfilter: nf_log: avoid oops in (un)bind with invalid nfproto values
  dccp: fix oops on Reset after close
  ipvs: fix dst_lock locking on dest update
  davinci_emac: Add Carrier Link OK check in Davinci RX Handler
  bnx2x: update driver version to 1.62.00-6
  bnx2x: properly calculate lro_mss
  bnx2x: perform statistics "action" before state transition.
  bnx2x: properly configure coefficients for MinBW algorithm (NPAR mode).
  bnx2x: Fix ethtool -t link test for MF (non-pmf) devices.
  bnx2x: Fix nvram test for single port devices.
  ...
2011-03-03 15:43:15 -08:00
Tony Lindgren
12d7d4e0ed Merge branch 'devel-cleanup' into omap-for-linus
Conflicts:
	arch/arm/mach-omap2/timer-gp.c
2011-03-02 17:07:14 -08:00
Huzaifa Sidhpurwala
e4738e29be USB: Remove unused timeout from io_edgeport.c
timeout variable is not used anywhere in int write_cmd_usb, remove it

Signed-off-by: Huzaifa Sidhpurwala <huzaifas@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-03-02 19:52:30 -05:00
Huzaifa Sidhpurwala
2cd5bb29a4 USB: Remove unused is_iso from fsl_udc_core.c
is_iso variable is not used anywhere, remove it

Signed-off-by: Huzaifa Sidhpurwala <huzaifas@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-03-02 19:52:29 -05:00
Huzaifa Sidhpurwala
5af9a6eb37 USB: Remove delay_t unused variable from sierra_ms.c driver initialisation code
trivial patch to remove unused delay_t varible

Signed-off-by: Huzaifa Sidhpurwala <huzaifas@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-03-02 19:52:29 -05:00
Stephen Hemminger
45d1b7ae20 usb-gadget: fix warning in ethernet
Driver was taking max() of a size_t and u32 which causes complaint
about comparison of different types.

Stumbled on this accidently in my config, never used.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-03-02 19:52:29 -05:00
Akinobu Mita
962f3ffa92 wusb: fix find_first_zero_bit() return value check
In wusb_cluster_id_get(), if no zero bits exist in wusb_cluster_id_table,
find_first_zero_bit() returns CLUSTER_IDS.

But it is impossible to detect that the bitmap is full because there
is an off-by-one error in the return value check.  It will cause
unexpected memory access by setting bit out of wusb_cluster_id_table
bitmap, and caller will get wrong cluster id.

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Cc: linux-usb@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-03-02 19:52:28 -05:00
Michal Simek
337fc720d8 of: Add missing of_address.h to xilinx ehci driver
Build log:
In file included from drivers/usb/host/ehci-hcd.c:1208:
drivers/usb/host/ehci-xilinx-of.c: In function 'ehci_hcd_xilinx_of_probe':
drivers/usb/host/ehci-xilinx-of.c:168: error: implicit declaration of function 'of_address_to_resource'

Signed-off-by: John Williams <john.williams@petalogix.com>
Signed-off-by: Michal Simek <monstr@monstr.eu>
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-03-02 13:45:18 -07:00
Yoshihiro Shimoda
60b0bf0f11 usb: EHCI, OHCI: Add configuration for the SH USB controller
The SH EHCI/OHCI driver hardcoded the CPU type in {ehci,ohci}-hcd.c.
So if we will add the new CPU, we had to add to the hcd driver each time.
The patch adds the CONFIG_USB_{EHCI,OHCI}_SH configuration. So if we
want to use the SH EHCI/OHCI, we only enable the configuration.

Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-03-01 16:01:46 -05:00
Andiry Xu
ad93562bde USB host: Move AMD PLL quirk to pci-quirks.c
This patch moves the AMD PLL quirk code in OHCI/EHCI driver to pci-quirks.c,
and exports the functions to be used by xHCI driver later.

AMD PLL quirk disable the optional PM feature inside specific
SB700/SB800/Hudson-2/3 platforms under the following conditions:

1. If an isochronous device is connected to OHCI/EHCI/xHCI port and is active;
2. Optional PM feature that powers down the internal Bus PLL when the link is
   in low power state is enabled.

Without AMD PLL quirk, USB isochronous stream may stutter or have breaks
occasionally, which greatly impair the performance of audio/video streams.

Currently AMD PLL quirk is implemented in OHCI and EHCI driver, and will be
added to xHCI driver too. They are doing similar things actually, so move
the quirk code to pci-quirks.c, which has several advantages:

1. Remove duplicate defines and functions in OHCI/EHCI (and xHCI) driver and
   make them cleaner;
2. AMD chipset information will be probed only once and then stored.
   Currently they're probed during every OHCI/EHCI initialization, move
   the detect code to pci-quirks.c saves the repeat detect cost;
3. Build up synchronization among OHCI/EHCI/xHCI driver. In current
   code, every host controller enable/disable PLL only according to
   its own status, and may enable PLL while there is still isoc transfer on
   other HCs. Move the quirk to pci-quirks.c prevents this issue.

Signed-off-by: Andiry Xu <andiry.xu@amd.com>
Cc: David Brownell <dbrownell@users.sourceforge.net>
Cc: Alex He <alex.he@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-03-01 16:01:45 -05:00
Keshava Munegowda
19403165c2 usb: host: omap: ehci and ohci simplification
The ehci and ohci drivers are simplified; Since
UHH and TLL initialization, clock handling are
done by common usbhs core driver, these functionalities
are removed from ehci and ohci drivers.

Signed-off-by: Keshava Munegowda <keshava_mgowda@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
2011-03-01 17:02:49 +02:00
Keshava Munegowda
181b250cf5 arm: omap: usb: create common enums and structures for ehci and ohci
Create the ehci and ohci specific platform data structures.
The port enum values are made common for both ehci and ohci.

Signed-off-by: Keshava Munegowda <keshava_mgowda@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
2011-03-01 17:01:11 +02:00
Felipe Balbi
09f0607d8b usb: host: omap: switch to platform_get_resource_byname
now that we have names on all memory bases, we can
switch to use platform_get_resource_byname() which
will make it simpler when we move to a setup where
OHCI and EHCI on OMAP play well together.

Signed-off-by: Felipe Balbi <balbi@ti.com>
2011-03-01 17:00:58 +02:00
Anand Gadiyar
87ecc73b3d usb: ehci: omap: add support for TLL mode on OMAP4
The EHCI controller in OMAP4 supports a transceiver-less link
mode (TLL mode), similar to the one in OMAP3. On the OMAP4
however, there are an additional set of clocks that need
to be turned on to get this working.

Request and configure these for each port if that port
is connected in TLL mode.

Signed-off-by: Anand Gadiyar <gadiyar@ti.com>
Cc: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
2011-03-01 17:00:56 +02:00
Huzaifa Sidhpurwala
c88ba39c1e usb: musb: tusb: Fix possible null pointer dereference in tusb6010_omap.c
tusb_dma was being dereferenced when it was nul

Signed-off-by: Huzaifa Sidhpurwala <huzaifas@redhat.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
2011-03-01 12:35:23 +02:00
Hema HK
70045c57f3 usb: musb: OMAP3xxx: Fix device detection in otg & host mode
In OMAP3xxx with OTG mode or host only mode, When the device
is inserted after the gadget driver loading the enumeration was not
through. This is because the mentor controller will start sensing the
ID PIN only after setting the session bit.
So after ID-GND, need to set the session bit for mentor to get it
configured as A device.

This is a fix to set the session bit again in ID_GND notification handler.
Tested with OMAP3630Zoom3 platform.

Signed-off-by: Hema HK <hemahk@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
2011-03-01 12:23:03 +02:00
Hema HK
37db3af11f usb: otg: TWL4030: Update the last_event variable.
Update the last_event variable of otg_transceiver. This will be used in
the musb platform glue driver for runtime idling the device.

Signed-off-by: Hema HK <hemahk@ti.com>
Cc: Felipe Balbi <balbi@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
2011-03-01 11:35:27 +02:00
Hema HK
7acc6197b7 usb: musb: Idle path retention and offmode support for OMAP3
This patch supports the retention and offmode support in the idle path for
musb driver using runtime pm APIs.

This is restricted to support offmode and retention only when device not
connected.When device/cable connected with gadget driver loaded,configured
to no idle/standby which will not allow the core transition to retention
or off.

There is no context save/restore done by hardware for musb in OMAP3
and OMAP4,driver has to take care of saving and restoring the context
during offmode.

Musb has a requirement of configuring sysconfig register to force
idle/standby mode and set the ENFORCE bit in module STANDBY register
for retention and offmode support.

Runtime pm and hwmod frameworks will take care of configuring to force
idle/standby when pm_runtime_put_sync is called and back to no
idle/standby when pm_runeime_get_sync is called.

Compile, boot tested and also tested the retention in the idle path on
OMAP3630Zoom3. And tested the global suspend/resume with offmode enabled.
Usb basic functionality tested on OMAP4430SDP.

There is some problem with idle path offmode in mainline, I could not test
with offmode. But I have tested this patch with resetting the controller
in the idle path when wakeup from retention just to make sure that the
context is lost, and restore path is working fine.

Removed .suspend/.resume fnction pointers and functions because there
is no need of having these functions as all required work is done
at runtime in the driver.

There is no need to call the runtime pm api with glue driver device
as glue layer device is the parent of musb core device, when runtime apis
are called for the child, parent device runtime functionality
will be invoked.

Design overview:

pm_runtime_get_sync: When called with musb core device takes care of
enabling the clock, calling runtime callback function of omap2430 glue
layer, runtime call back of musb driver and configure the musb sysconfig
to no idle/standby

pm_runtime_put: Takes care of calling runtime callback function of omap2430
glue layer, runtime call back of musb driver, Configure the musb sysconfig
to force idle/standby and disable the clock.

During musb driver load: Call pm_runtime_get_sync.

End of musb driver load: Call pm_runtime_put

During gadget driver load: Call pm_runtime_get_sync,
End of gadget driver load: Call pm_runtime_put if there is no device
or cable is connected.

During unload of the gadget driver:Call pm_runtime_get_sync if cable/device
is not connected.
End of the gadget driver unload : pm_runtime_put

During unload of musb driver : Call pm_runtime_get_sync
End of unload: Call pm_runtime_put

On connect of usb cable/device -> transceiver notification(VBUS and ID-GND):
pm_runtime_get_sync only if the gadget driver loaded.

On disconnect of the cable/device -> Disconnect Notification:
pm_runtime_put if the gadget driver is loaded.

Signed-off-by: Hema HK <hemahk@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
2011-03-01 11:35:12 +02:00
Hema HK
da68ccec21 usb: musb: Remove platform context save/restore API
For OMAP3 and OMAP4 for offmode and retention support, musb
sysconfig is configured to force idle and standby with ENABLE_FORCE bit
of OTG_FORCESTNDBY set.
And on wakeup configure to no ilde/standby with resetting the ENABLE_FORCE
bit. There is not need to save and restore of this register anymore
so removed omap2430_save_context/omap2430_restore_context functions.
and also removed otg_forcestandby member of musb_context_registers
structure

Signed-off-by: Hema HK <hemahk@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
2011-03-01 11:35:11 +02:00
Felipe Balbi
4cbbf08443 usb: musb: gadget: fix list_head usage
commit ad1adb89a0
(usb: musb: gadget: do not poke with gadget's list_head)
fixed a bug in musb where it was corrupting the list_head
which is supposed to be used by gadget drivers. While
doing that, I forgot to fix the usage in musb_gadget_dequeue()
method. Fix that.

Reported-by: Pavol Kurina <pavol.kurina@emsys.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
2011-03-01 11:34:55 +02:00
Jiri Slaby
6960f40a95 USB: serial/kobil_sct, fix potential tty NULL dereference
Make sure that we check the return value of tty_port_tty_get.
Sometimes it may return NULL and we later dereference that.

The only place here is in kobil_read_int_callback, so fix it.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Cc: Alan Cox <alan@linux.intel.com>
Cc: stable@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-02-28 19:24:54 -08:00
Jiri Slaby
f7d7aedfcd USB: serial/keyspan_pda, fix potential tty NULL dereferences
Make sure that we check the return value of tty_port_tty_get.
Sometimes it may return NULL and we later dereference that.

There are several places to check. For easier handling,
tty_port_tty_get is moved directly to the palce where needed in
keyspan_pda_rx_interrupt.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Cc: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-02-28 19:24:54 -08:00
Arvid Brodin
7adc14b14b usb/isp1760: Handle toggle bit in queue heads only
Remove redundant "toggle" member from struct isp1760_qtd, and store toggle
status in struct isp1760_qh only.

Signed-off-by: Arvid Brodin <arvid.brodin@enea.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-02-28 19:23:39 -08:00
Arvid Brodin
65f1b5255c usb/isp1760: Replace period calculation for INT packets with something readable
Replace the period calculation for INT packets with something readable. Seems
to fix a rare bug with quickly repeated insertion/removal of several USB
devices simultaneously (hub control INT packets).

Signed-off-by: Arvid Brodin <arvid.brodin@enea.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-02-28 19:23:38 -08:00
Arvid Brodin
6bda21bc09 usb/isp1760: Consolidate printouts and remove unused code
Consolidate printouts to use dev_XXX functions instead of an assortment of
printks and driver specific macros. Remove some unused code snippets and struct
members. Remove some unused function parameters and #defines. Change the
"queue_entry" variable name which has different but related meanings in
different places and use "slot" only.

Signed-off-by: Arvid Brodin <arvid.brodin@enea.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-02-28 19:23:38 -08:00
Arvid Brodin
bbaa387674 usb/isp1760: Remove redundant "data_buffer" member from struct inter_packet_info
Signed-off-by: Arvid Brodin <arvid.brodin@enea.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-02-28 19:23:37 -08:00
Arvid Brodin
a041d8e437 usb/isp1760: Clean up payload address handling
Encapsulate payload addresses within qtds.

Signed-off-by: Arvid Brodin <arvid.brodin@enea.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-02-28 19:23:37 -08:00
Arvid Brodin
fd436aee97 usb/isp1760: Remove redundant variables and defines
Removes the redundant hw_next list pointer from struct isp1760_qtd, removes some
unused #defines, removes redundant "urb" member from struct inter_packet_info.

Signed-off-by: Arvid Brodin <arvid.brodin@enea.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-02-28 19:23:36 -08:00
Arvid Brodin
bedc0c31ac usb/isp1760: Move to native-endian ptds
This helps users with platform-bus-connected isp176xs, big-endian cpu,
and missing byteswapping on the data bus. It does so by collecting all
SW byteswaps in one place and also fixes a bug with non-32-bit io
transfers on this hardware, where payload has to be byteswapped
instead of ptds.

Signed-off-by: Arvid Brodin <arvid.brodin@enea.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-02-28 19:23:36 -08:00
Justin P. Mattock
6d42fcdb68 usb: core: hub.c Remove one to many n's in a word.
The Patch below removes one to many "n's" in a word..

Signed-off-by: Justin P. Mattock <justinmattock@gmail.com>
CC: Alan Stern <stern@rowland.harvard.edu>
CC: linux-usb@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-02-28 19:19:56 -08:00
Justin P. Mattock
06125beb41 usb: host: uhci-hcd.c Remove one to many n's in a word.
The Patch below removes one to many "n's" in a word..

Signed-off-by: Justin P. Mattock <justinmattock@gmail.com>
CC: Alan Stern <stern@rowland.harvard.edu>
CC: linux-usb@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-02-28 19:19:56 -08:00
Rémi Denis-Courmont
f5a4532528 f_phonet: avoid pskb_pull(), fix OOPS with CONFIG_HIGHMEM
This is similar to what we already do in cdc-phonet.c in the same
situation. pskb_pull() refuses to work with HIGHMEM, even if it is
known that the socket buffer is entirely in "low" memory.

Signed-off-by: Rémi Denis-Courmont <remi.denis-courmont@nokia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-02-28 12:36:39 -08:00
Grant Likely
d35fb64176 dt/usb: Eliminate users of of_platform_{,un}register_driver
Get rid of users of of_platform_driver in drivers/usb.  The
of_platform_{,un}register_driver functions are going away, so the
users need to be converted to using the platform_bus_type directly.

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-02-28 13:22:45 -07:00
Justin P. Mattock
7aed9dfedd drivers:usb:wusbhc.h remove one to many l's in the word.
The patch below removes an extra "l" in the word.

Signed-off-by: Justin P. Mattock <justinmattock@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-02-25 11:52:20 -08:00
Martin Jansen
309a057932 USB: opticon: add rts and cts support
Add support for RTS and CTS line status

Signed-off-by: Martin Jansen <martin.jansen@opticon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-02-25 11:41:12 -08:00
Alan Stern
969e3033ae USB: serial drivers need to use larger bulk-in buffers
When a driver doesn't know how much data a device is going to send,
the buffer size should be at least as big as the endpoint's maxpacket
value.  The serial drivers don't follow this rule; many of them
request only 256-byte bulk-in buffers.  As a result, they suffer
overflow errors if a high-speed device wants to send a lot of data,
because high-speed bulk endpoints are required to have a maxpacket
size of 512.

This patch (as1450) fixes the problem by using the driver's
bulk_in_size value as a minimum, always allocating buffers no smaller
than the endpoint's maxpacket size.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Tested-by: Flynn Marquardt <flynn@flynnux.de>
CC: <stable@kernel.org> [after .39-rc1 is out]
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-02-25 11:38:32 -08:00