This patch (as605) removes the private udev->serialize semaphore,
relying instead on the locking provided by the embedded struct device's
semaphore. The changes are confined to the core, except that the
usb_trylock_device routine now uses the return convention of
down_trylock rather than down_read_trylock (they return opposite values
for no good reason).
A couple of other associated changes are included as well:
Now that we aren't concerned about HCDs that avoid using the
hcd glue layer, usb_disconnect no longer needs to acquire the
usb_bus_lock -- that can be done by usb_remove_hcd where it
belongs.
Devices aren't locked over the same scope of code in
usb_new_device and hub_port_connect_change as they used to be.
This shouldn't cause any trouble.
Along with the preceding driver core patch, this needs a lot of testing.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This fixes the driver that forgot to set the module owner up. Now we
can remove the unneeded pointer from the usb driver structure. The idea
for how to do this was from Al Viro, who did this for the PCI drivers.
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This lets drivers, like the usb-serial ones, disable the ability to add
ids from sysfs.
The usb-serial drivers are "odd" in that they are really usb-serial bus
drivers, not usb bus drivers, so the dynamic id logic will have to go
into the usb-serial bus core for those drivers to get that ability.
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Echo the usb vendor and product id to the "new_id" file in the driver's
sysfs directory, and then that driver will be able to bind to a device
with those ids if it is present.
Example:
echo 0557 2008 > /sys/bus/usb/drivers/foo_driver/new_id
adds the hex values 0557 and 2008 to the device id table for the foo_driver.
Note, usb-serial drivers do not currently work with this capability yet.
usb-storage also might have some oddities.
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This will make the dynamic-id stuff easier to do, as it will be
self-contained.
No logic was changed at all.
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Make the bias parameter writeable. Writing the parameter does not trigger
a rebind of currently attached storage devices.
Signed-off-by: Pete Zaitcev <zaitcev@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This patch adds a shim driver libusual, which routes devices between
usb-storage and ub according to the common table, based on unusual_devs.h.
The help and example syntax is in Kconfig.
Signed-off-by: Pete Zaitcev <zaitcev@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This patch (as515b) adds a routine to usbcore to simplify handling of
host controllers that lost power or were reset during suspend/resume.
The new core routine marks all the child devices of the root hub as
NOTATTACHED and tells khubd to disconnect the device structures as soon
as possible.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
The recent platform_device update has reintroduced into dummy_hcd.c the
dreaded dev->dev syndrome. This harkens back to when an earlier version
of that driver included the unforgettable line:
dev->dev.dev.driver_data = dev;
This patch (as602) renames the platform_device variables to "pdev", in
the hope of reducing confusion.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
adds new module parameter "devid" that points to a string with format
"device_name:vendor_id:device_id:flags". if provided at module load
time, this string is being parsed and a new entry is created in
usb_dev_id[] and pegasus_ids[] so the new device can later be recognized
by the probe routine. this might be helpful for someone who don't
know/wish to build new module/kernel, but want to use his new usb-to-eth
device that is not yet listed in pegasus.h
Signed-off-by: Petko Manolov <petkan@nucleusys.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
removes all redundant collecting of the return value from
get/set_registers() and suchlike. can't remember who put all of those
some time ago, but they doesn't make any sense to me. where needed only
a few references remained;
Signed-off-by: Petko Manolov <petkan@nucleusys.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This patch (as601) adds a proper reference count to the file-storage
gadget's main data structure, to keep track of references held by child
devices (LUNs in this case). Before this, the driver would wait for
each child to be released before unbinding.
While there's nothing really wrong with that (you can't create a hang by
doing "rmmod g_file_storage </sys/.../lun0/ro" since the open file will
prevent rmmod from running), the code might as well follow the standard
procedures. Besides, this shrinks the size of the structure by a few
words... :-)
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This modifies the HCD builds to automatically "-DDEBUG" if
CONFIG_USB_DEBUG is selected. It's just a minor source code cleanup,
guaranteeing consistency.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This makes the ISP116x HCD use the driver model wakeup flags for its
controller, not the flags in the HCD glue (which will be removed).
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This makes UHCI stop using the HCD glue wakeup flags to report whether
the controller can wake the system. The existing code was wrong anyway;
having a PCI PM capability doesn't imply it reports PME# is supported.
I skimmed Intel's ICH7 datasheet and that basically says the wakeup
signaling gets routed only through ACPI registers. (On the other hand,
many VIA chips provide the PCI PM capabilities...) I think that doing
this correctly with UHCI is going to require the ACPI folk to associate
the /proc/acpi/wakeup identifiers (and wakeup enable/disable flags)
with the relevant /sys/devices/pci*/... devices.
From: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This makes the SL811 HCD use the driver model wakeup flags for its
controller, not the flags in the HCD glue (which will be removed).
From: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
drivers/usb/host/sl811-hcd.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
On some systems, EHCI seems to be getting IRQs too early during driver
setup ... before the root hub is allocated, in particular, making trouble
for any code chasing down root hub pointers! In this case, it seems to
be safe to just ignore the root hub setting. Thanks to Rafael J. Wysocki
for getting this properly tested.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This teaches the EHCI driver to use the new driver model wakeup flags,
replacing the similar ones in the HCD glue. It also adds a workaround
for the current glitch whereby PCI init doesn't init the wakeup flags
from the PCI PM capabilities. (EHCI controllers don't worry about
legacy mode; the PCI PM capability would always do the job.)
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
More care on loading firmware, take into account fw->size can't be zero.
Signed-off-by: Matthieu CASTET <castet.matthieu@free.fr>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
A driver for USB ADSL modems based on the ADI eagle chipset using the
usb_atm infrastructure.
The managing part was taken from bsd ueagle driver, other parts were
written from scratch.
The driver uses the in-kernel firmware loader :
- to load a first usb firmware when the modem is in pre-firmware state
- to load the dsp firmware that are swapped in host memory.
- to load CMV (configuration and management variables) when the modem
boot. (We can't use options or sysfs for this as there many possible
values. See
https://mail.gna.org/public/eagleusb-dev/2005-04/msg00031.html for a
description of some)
- to load fpga code for 930 chipset.
The device had 4 endpoints :
* 2 for data (use by usbatm). The incoming
endpoint could be iso or bulk. The modem seems buggy and produce lot's
of atm errors when using it in bulk mode for speed > 3Mbps, so iso
endpoint is need for speed > 3Mbps. At the moment iso endpoint need a
patched usbatm library and for this reason is not included in this patch.
* One bulk endpoint for uploading dsp firmware
* One irq endpoint that notices the driver
- if we need to upload a page of the dsp firmware
- an ack for read or write CMV and the value (for the read case).
If order to make the driver cleaner, we design synchronous
(read|write)_cmv :
-send a synchronous control message to the modem
-wait for an ack or a timeout
-return the value if needed.
In order to run these synchronous usb messages we need a kernel thread.
The driver has been tested with sagem fast 800 modems with different
eagle chipset revision and with ADI 930 since April 2005.
Signed-off-by: Matthieu CASTET <castet.matthieu@free.fr>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
When the ehci-hcd driver prepares a control URB, it tests for a
zero-length data stage by looking at the transfer_dma value instead of
the transfer_buffer_length. (In fact it does this even for non-control
URBs, which is an additional aspect of the same bug.)
However, under certain circumstances it's possible for transfer_dma to
be 0 while transfer_buffer_length is non-zero. This can happen when a
freshly allocated page (mapped to address 0 and marked Copy-On-Write,
but never written to) is used as the source buffer for an OUT transfer.
This patch (as598) fixes the problem.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
The attached patch makes a cleanup of isp116x-hcd. Most of the volume of
the patch comes from 2 sources: moving the code around to get rid of a
few function prototypes and reworking register dumping functions/macros.
Among other things, switched over from using procfs to debugfs.
Cleanup. The following changes were made:
- Rework register dumping code so it can be used for dumping
to both syslog and debugfs.
- Switch from procfs to debugfs..
- Die gracefully on Unrecoverable Error interrupt.
- Fix memory leak in isp116x_urb_enqueue(), if HC happens to
die in a narrow time window.
- Fix a 'sparce' warning (unnecessary cast).
- Report Devices Removable for root hub ports by default
(was Devices Permanently Attached).
- Move bus suspend/resume functions down in code to get rid of
a few function prototypes.
- A number of one-line cleanups.
- Add an entry to MAINTAINERS.
Signed-off-by: Olav Kongas <ok@artecdesign.ee>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
MAINTAINERS | 6
drivers/usb/host/isp116x-hcd.c | 429 ++++++++++++++++-------------------------
drivers/usb/host/isp116x.h | 83 +++++--
3 files changed, 230 insertions(+), 288 deletions(-)
Until now the isp116x-hcd had no support to reinitialize the HC on
resume, if the controller lost its state during suspend. This patch,
generated against your Oct 26 git tree, adds that support. The patch is
basically the same as the one tested by Ivan Kalatchev, who reported the
problem, on 2.6.13.
Please apply,
Support reinitializing the isp116x host controller from scratch on
resume, if the controller has lost its state.
Signed-off-by: Olav Kongas <ok@artecdesign.ee>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
this patch by David converts the sending queue of the CDC ACM driver
to a queue of URBs. This is needed for quicker devices. Please apply.
Signed-Off-By: Oliver Neukum <oliver@neukum.name>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
drivers/usb/class/cdc-acm.c | 229 ++++++++++++++++++++++++++++++--------------
drivers/usb/class/cdc-acm.h | 33 +++++-
2 files changed, 185 insertions(+), 77 deletions(-)
Add power management functions for the pxa27x USB OHCI host controller.
This is a totally rewritten version of the patch by Nicolas Pitre and
Todd Poynor which accounts for recent USB changes.
Signed-off-by: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
To allow multiple platforms to use the PXA27x OHCI driver, the platform
code needs to be moved into the board specific files in
arch/arm/mach-pxa. This patch does this for mainstone and adds
preliminary hooks to allow other boards to use the driver.
This has been compile tested for mainstone and successfully run on Spitz
(Sharp Zaurus SL-C3000) with the addition of an appropriate board
support file.
Signed-off-by: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Nicolas Pitre <nico@cam.org>
Acked-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Some G5s still occasionally experience shutdowns due to overtemp
conditions despite the recent fix. After analyzing logs from such
machines, it appears that the overtemp code is a bit too quick at
shutting the machine down when reaching the critical temperature (tmax +
8) and doesn't leave the fan enough time to actually cool it down. This
happens if the temperature of a CPU suddenly rises too high in a very
short period of time, or occasionally on boot (that is the CPUs are
already overtemp by the time the driver loads).
This patches makes the code a bit more relaxed, leaving a few seconds to
the fans to do their job before kicking the machine shutown.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This patch fixes a typo introduced by conversion to dynamic input_dev
allocation.
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This patch fixes a typo introduced by conversion to dynamic input_dev
allocation.
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This patch fixes a typo introduced by conversion to dynamic input_dev
allocation.
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Patch from Erik Hovland
This patch provides two changes. An indent is supplied for an if/else clause so that it is more readable. An acronym is incorrectly typed as UER when it should be IER.
Signed-off-by: Erik Hovland <erik@hovland.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Thanks to Roman Zippel for the suggestion.
Signed-off-by: Jean Delvare <khali@linux-fr.org>
[ Short explanation: Kconfig uses ternary math: n/m/y, and !m is m ]
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This reverts the series of commits
67dbb4ea33281ab031a847807ce381
that changed the GART VM start offset. It fixed some machines, but
seems to continually interact badly with some X versions.
Quoth Ben Herrenschmidt:
"So I think at this point, the best is that we keep the old bogus code
that at least is consistent with the bug in the server. I'm working on a
big patch to X that reworks the memory map stuff completely and fixes
those issues on the server side, I'll do a DRM patch matching this X fix
as well so that the memory map is only ever set in one place and with
what I hope is a correct algorithm..."
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This patch fixes a typo introduced by conversion to dynamic input_dev
allocation.
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
__get_unaligned creates a typeof the var its passed, and writes to it,
which on gcc4.1, spits out the following error:
drivers/char/vc_screen.c: In function 'vcs_write':
drivers/char/vc_screen.c:422: error: assignment of read-only variable 'val'
Signed-off-by: Dave Jones <davej@redhat.com>
[ The "right" fix would be to try to fix <asm-generic/unaligned.h>
but that's hard to do with the tools gcc gives us. So this
simpler patch is preferable -- Linus ]
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Noticed by Christophe Zimmerman, this explains the slow mouse movement
with 2.6.x kernels.
And checking the 2.4.x drivers/sbus/char/sunmouse.c driver shows we
always used a 5-byte protocol with Sun mice in the past. I have no
idea how the 3-byte thing got into the 2.6.x driver, but it's surely
wrong.
Signed-off-by: David S. Miller <davem@davemloft.net>
Resubmitting after recommendation to use GET_REG32_1() instead of
GET_REG32_LOOP(..., 1). Retested. Problem remains fixed.
Prevent tg3_get_regs() from reading reserved and undocumented registers
at RX_CPU_BASE and TX_CPU_BASE offsets which caused hostile behavior
on PCIe platforms.
Acked-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
As reported by Jules Villard <jvillard@ens-lyon.fr> and some others, the
recent GART aperture start reconfiguration causes problems on some
setups.
What I _think_ might be happening is that the X server is also trying to
muck around with the card memory map and is forcing it back into a wrong
setting that also happens to no longer match what the DRM wants to do
and blows up. There are bugs all over the place in that code (and still
some bugs in the DRM as well anyway).
This patch attempts to avoid that by using the largest of the 2 values,
which I think will cause it to behave as it used to for you and will
still fix the problem with machines that have an aperture size smaller
than the video memory.
Acked-by: Jules Villard <jvillard@ens-lyon.fr>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Currently the checks are scattered all over and this leads
to inconsistencies and even cases where the check is not made.
Based upon a patch from Kris Katterjohn.
Signed-off-by: David S. Miller <davem@davemloft.net>
The oops is characteristic of the underlying device being removed from
visibility before the class device, and sure enough we do device_del()
before transport_unregister() in the scsi_target_reap() routines. I've
no idea why this is suddenly showing up, since the code has been in
there since that function was first invented. However, I've confirmed
this fixes Andrew Vasquez's boot oops.
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
