Starting with commit 0b52297f22 ("reset: Add support for shared reset
controls") there is a reference count for reset control assertions. The
goal is to allow resets to be shared by multiple devices and an assert
will take effect only when all instances have asserted the reset.
In order to preserve backwards-compatibility, all reset controls become
exclusive by default. This is to ensure that reset_control_assert() can
immediately assert in hardware.
However, this new behaviour triggers the following warning in the EHCI
driver for Tegra:
[ 3.365019] ------------[ cut here ]------------
[ 3.369639] WARNING: CPU: 0 PID: 1 at drivers/reset/core.c:187 __of_reset_control_get+0x16c/0x23c
[ 3.382151] Modules linked in:
[ 3.385214] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.6.0-rc6-next-20160503 #140
[ 3.392769] Hardware name: NVIDIA Tegra SoC (Flattened Device Tree)
[ 3.399046] [<c010fa50>] (unwind_backtrace) from [<c010b120>] (show_stack+0x10/0x14)
[ 3.406787] [<c010b120>] (show_stack) from [<c0347dcc>] (dump_stack+0x90/0xa4)
[ 3.414007] [<c0347dcc>] (dump_stack) from [<c011f4fc>] (__warn+0xe8/0x100)
[ 3.420964] [<c011f4fc>] (__warn) from [<c011f5c4>] (warn_slowpath_null+0x20/0x28)
[ 3.428525] [<c011f5c4>] (warn_slowpath_null) from [<c03cc8cc>] (__of_reset_control_get+0x16c/0x23c)
[ 3.437648] [<c03cc8cc>] (__of_reset_control_get) from [<c0526858>] (tegra_ehci_probe+0x394/0x518)
[ 3.446600] [<c0526858>] (tegra_ehci_probe) from [<c04516d8>] (platform_drv_probe+0x4c/0xb0)
[ 3.455029] [<c04516d8>] (platform_drv_probe) from [<c044fe78>] (driver_probe_device+0x1ec/0x330)
[ 3.463892] [<c044fe78>] (driver_probe_device) from [<c0450074>] (__driver_attach+0xb8/0xbc)
[ 3.472320] [<c0450074>] (__driver_attach) from [<c044e1ec>] (bus_for_each_dev+0x68/0x9c)
[ 3.480489] [<c044e1ec>] (bus_for_each_dev) from [<c044f338>] (bus_add_driver+0x1a0/0x218)
[ 3.488743] [<c044f338>] (bus_add_driver) from [<c0450768>] (driver_register+0x78/0xf8)
[ 3.496738] [<c0450768>] (driver_register) from [<c010178c>] (do_one_initcall+0x40/0x170)
[ 3.504909] [<c010178c>] (do_one_initcall) from [<c0c00ddc>] (kernel_init_freeable+0x158/0x1f8)
[ 3.513600] [<c0c00ddc>] (kernel_init_freeable) from [<c0810784>] (kernel_init+0x8/0x114)
[ 3.521770] [<c0810784>] (kernel_init) from [<c0107778>] (ret_from_fork+0x14/0x3c)
[ 3.529361] ---[ end trace 4bda87dbe4ecef8a ]---
The reason is that Tegra SoCs have three EHCI controllers, each with a
separate reset line. However the first controller contains UTMI pads
configuration registers that are shared with its siblings and that are
reset as part of the first controller's reset. There is special code in
the driver to assert and deassert this shared reset at probe time, and
it does so irrespective of which controller is probed first to ensure
that these shared registers are reset before any of the controllers are
initialized. Unfortunately this means that if the first controller gets
probed first, it will request its own reset line and will subsequently
request the same reset line again (temporarily) to perform the reset.
This used to work fine before the above-mentioned commit, but now
triggers the new WARN.
Work around this by making sure we reuse the controller's reset if the
controller happens to be the first controller.
Cc: Philipp Zabel <p.zabel@pengutronix.de>
Cc: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
There are three EHCI controllers on Tegra SoCs, each with its own reset
line. However, the first controller contains a set of UTMI configuration
registers that are shared with its siblings. These registers will only
be reset as part of the first controller's reset. For proper operation
it must be ensured that the UTMI configuration registers are reset
before any of the EHCI controllers are enabled, irrespective of the
probe order.
Commit a47cc24cd1 ("USB: EHCI: tegra: Fix probe order issue leading to
broken USB") introduced code that ensures the first controller is always
reset before setting up any of the controllers, and is never again reset
afterwards.
This code, however, grabs the wrong reset. Each EHCI controller has two
reset controls attached: 1) the USB controller reset and 2) the UTMI
pads reset (really the first controller's reset). In order to reset the
UTMI pads registers the code must grab the second reset, but instead it
grabbing the first.
Fixes: a47cc24cd1 ("USB: EHCI: tegra: Fix probe order issue leading to broken USB")
Acked-by: Jon Hunter <jonathanh@nvidia.com>
Cc: stable@vger.kernel.org
Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
parport subsystem has introduced parport_del_port() to delete a port
when it is going away. Without parport_del_port() the registered port
will not be unregistered.
To reproduce and verify the error:
Command to be used is : ls /sys/bus/parport/devices
1) without the device attached there is no output as there is no
registered parport.
2) Attach the device, and the command will show "parport0".
3) Remove the device and the command still shows "parport0".
4) Attach the device again and we get "parport1".
With the patch applied:
1) without the device attached there is no output as there is no
registered parport.
2) Attach the device, and the command will show "parport0".
3) Remove the device and there is no output as "parport0" is now
removed.
4) Attach device again to get "parport0" again.
Cc: <stable@vger.kernel.org> # 4.2+
Signed-off-by: Sudip Mukherjee <sudip.mukherjee@codethink.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Since ed_schedule begins with marking the ED as "operational",
the ED may be left in such state even if scheduling actually
fails.
This allows future submission attempts to smuggle this ED to the
hardware behind the scheduler's back and without linking it to
the ohci->eds_in_use list.
The former causes bandwidth saturation and data loss on isoc
endpoints, the latter crashes the kernel when attempt is made
to unlink such ED from this list.
Fix ed_schedule to update ED state only on successful return.
Signed-off-by: Michal Pecio <michal.pecio@gmail.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Ensure that the endpoint is stopped by clearing REQPKT before
clearing DATAERR_NAKTIMEOUT before rotating the queue on the
dedicated bulk endpoint.
This addresses an issue where a race could result in the endpoint
receiving data before it was reprogrammed resulting in a warning
about such data from musb_rx_reinit before it was thrown away.
The data thrown away was a valid packet that had been correctly
ACKed which meant the host and device got out of sync.
Signed-off-by: Andrew Goodbody <andrew.goodbody@cambrionix.com>
Cc: stable@vger.kernel.org
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
shared_fifo endpoints would only get a previous tx state cleared
out, the rx state was only cleared for non shared_fifo endpoints
Change this so that the rx state is cleared for all endpoints.
This addresses an issue that resulted in rx packets being dropped
silently.
Signed-off-by: Andrew Goodbody <andrew.goodbody@cambrionix.com>
Cc: stable@vger.kernel.org
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Incorrect cppi dma channel is referenced in musb_rx_dma_iso_cppi41(),
which causes kernel NULL pointer reference oops later when calling
cppi41_dma_channel_program().
Fixes: 069a3fd (usb: musb: Remove ifdefs for musb_host_rx in musb_host.c
part1)
Cc: <stable@vger.kernel.org> # v4.2+
Reported-by: Matwey V. Kornilov <matwey@sai.msu.ru>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
If the session bit was not set in the backup of devctl register,
restoring devctl would clear the session bit. Therefor, only restore
devctl register when the session bit was set in the backup.
This solves the device enumeration failure in otg mode exposed by commit
56f487c (PM / Runtime: Update last_busy in rpm_resume).
Cc: <stable@vger.kernel.org> # v4.2+
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
We need to check the state for the PHY with delayed_work
as otherwise MUSB will get confused and idles immediately.
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
There's no longer any need for custom initcall level for
musb.
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
With the pull up being handled with delayed work, we can
now finally remove pm_runtime_set_irq_safe that blocks the
MUSB glue from idling.
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
With PM runtime behaving, these are all now unnecessary.
Doing pm_runtime_get(musb->controller) will keep the parent
glue layer also active.
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
At least on n900 we have phy-twl4030-usb only generating cable
interrupts, and then have a separate USB PHY.
In order for musb to know the real cable status, we need to
clear any cached state until musb is ready. Otherwise the cable
status interrupts will get just ignored if the status does
not change from the initial state.
To do this, let's add a return value to musb_mailbox(), and
reset cached linkstat to MUSB_UNKNOWN on error. Sorry to cause
a bit of churn here, I should have added that already last time
patching musb_mailbox().
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
At least 2430 glue layer pulls d+ high on start up even if there are
no gadgets configured. This is bad at least for anything using a separate
battery charger chip as it can confuse the charger detection.
Let's fix the issue by removing the bogus glue layer code tinkering
with the SESSION bit. As pointed out Bin Liu <b-liu@ti.com> and
Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>, the SESSION
bit just starts host mode if ID pin is grounded, and starts the
srp is ID pin is floating. So without the ID pin changing, it's
unable to force musb mode to anything. And just for starting a
host mode, things work fine without this code.
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This is no longer needed with PM runtime at least for 2430 glue.
We can now rely only on PM runtime and cable detection.
The other glue layers can probably remove try_idle too, but that
needs to be tested for each platform before doing it.
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This simplifies things and allows idling both MUSB and PHY
when nothing is configured. Let's just return early from PM
runtime if musb is not yet initialized.
Let's also warn if PHY is not configured.
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
We may have drivers loaded but no configured gadgets and MUSB may be in
host mode. If gadgets are configured during host mode, PM runtime will
get confused.
Disable PM runtime from gadget state, and do it based on the cable
and last state.
Note that we may get multiple cable events, so we need to keep track
of the power state.
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
We have MUSB setting pm_runtime_irq_safe with the following
commits:
30a70b026b ("usb: musb: fix obex in g_nokia.ko causing kernel panic")
3e43a07256 ("usb: musb: core: add pm_runtime_irq_safe()")
Let's fix things to use delayed work so we can remove the
pm_runtime_irq_safe.
Note that we may want to set this up in a generic way in the
gadget framework eventually.
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The conditional use of PM runtime does not work properly
for musb gadget. On cable disconnect we may not get any
USB_EVENT_NONE leaving the PM runtime call unpaired.
Let's fix the issue by making sure the PM runtime calls are
paired within the functions. The glue layer will take care
of the rest.
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Let's not tinker with the PM runtime of musb core from the omap2430
wrapper. This allows us to initialize PM runtime for musb core later
on instead of doing it in stages. And omap2430 wrapper has no need
to for accessing musb core at this point.
Note that this does not remove all the PM runtime calls from the
glue layer, those will get removed in a later patch.
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Let's make the PM runtime use the standard autosuspend calls.
Commit 5de85b9d57 ("PM / runtime: Re-init runtime PM states at probe
error and driver unbind") means we must pair use_autosuspend with
dont_use_autosuspend and then use put_sync to properly idle the
device.
Note that we'll be removing the PM runtime calls from the glue
layer to the MUSB core in the next patch. And we can also remove
the pointless FIXME comment now.
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
We have remove() already calling shutdown(), so let's drop it
and move the code to remove(). No code changes, we'll drop the
the FIXME in the following patch with more clean-up.
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Looks like at least 2430 glue won't idle reliably with the 200 ms
autosuspend delay. This causes deeper idle states being blocked for
the whole SoC when disconnecting OTG A cable.
Increasing the delay to 500 ms seems to idle both MUSB and the PHY
reliably. This is probably because of time needed by the hardware
based negotiation between MUSB and the PHY.
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
When the board is powering attached usb devices via the otg port
sometimes / on some devices it takes slightly too long for the Vbus
detection code in phy-sun4i-usb.c to signal that Vbus is high after
enabling Vbus and the musb hardware signals a MUSB_INTR_VBUSERROR
interrupt.
This commit sets the otg state to A_WAIT_VRISE upon enabling Vbus
making musb_stage0_irq() ignore the first VBUSERR_RETRY_COUNT
VBUSERROR interrupts, fixing connection issues in these cases.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
[b-liu@ti.com: revise subject prefix]
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Move the mode handling to the platform_set_mode callback.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
[b-liu@ti.com: revise subject prefix]
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Now that the DMA engine check was moved to musb_tx_dma_porgram(), both
musb_tx_dma_set_mode_cppi_tusb() and musb_tx_dma_set_mode_mentor() always
return 0, so we can make both these functions *void*.
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
[b-liu@ti.com: revise subject prefix]
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Commit 754fe4a92c ("usb: musb: Remove ifdefs for TX DMA for musb_host.c")
looks incomplete: the DMA engine checks are done outside the Mentor/UX500
handler but inside the CPPI/TUSB handler. Move the checks out of the CPPI/
TUSB handler into its caller, musb_tx_dma_program().
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
[b-liu@ti.com: revise subject prefix]
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
urb->status is set when endpoint csr RXSTALL, H_ERROR, DATAERROR or
INCOMPRX bit is set. Those bits mean a broken pipe, so don't start next
urb when any of these bits is set by checking urb->status.
To minimize the risk of regression, only do so for RX, until we have a
test case to understand the behavior of TX.
The patch fixes system freeze issue caused by repeatedly invoking RX ISR
while removing a usb uart device connected to a hub, in which case the
hub has no chance to report the disconnect event due to the kernel is
busy in processing the RX interrupt flooding.
Fix checkpatch complaint (qh != NULL) as while.
Reported-by: Max Uvarov <muvarov@gmail.com>
Tested-by: Yegor Yefremov <yegorslists@googlemail.com>
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The MUSB Programming Guide states that the driver should clear RXCSR
bit2 when the controller sets the bit.
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
I got one of these cards for testing uas with, it seems that with streams
it dma-s all over the place, corrupting memory. On my first tests it
managed to dma over the BIOS of the motherboard somehow and completely
bricked it.
Tests on another motherboard show that it does work with streams disabled.
Cc: stable@vger.kernel.org
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Several people have reported that UBSAN doesn't like the pointer
arithmetic in ehci_hub_control():
u32 __iomem *status_reg = &ehci->regs->port_status[
(wIndex & 0xff) - 1];
u32 __iomem *hostpc_reg = &ehci->regs->hostpc[(wIndex & 0xff) - 1];
If wIndex is 0 (and it often is), these calculations underflow and
UBSAN complains.
According to the C standard, pointer computations leading to locations
outside the bounds of an array object (other than 1 position past the
end) are undefined. In this case, the compiler would be justified in
concluding the wIndex can never be 0 and then optimizing away the
tests for !wIndex that occur later in the subroutine. (Although,
since ehci->regs->port_status and ehci->regs->hostpc are both 0-length
arrays and are thus GCC extensions to the C standard, it's not clear
what the compiler is really allowed to do.)
At any rate, we can avoid all these difficulties, at the cost of
making the code slightly longer, by not decrementing the index when it
is equal to 0. The runtime effect is minimal, and anyway
ehci_hub_control() is not on a hot path.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Reported-by: Valdis Kletnieks <Valdis.Kletnieks@vt.edu>
Reported-by: Meelis Roos <mroos@linux.ee>
Reported-by: Martin_MOKREJÅ <mmokrejs@gmail.com>
Reported-by: "Navin P.S" <navinp1912@gmail.com>
CC: Andrey Ryabinin <ryabinin.a.a@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Commit 198de51dbc ("USB: uas: Limit qdepth at the scsi-host level")
removed the scsi_change_queue_depth() call from uas_slave_configure()
assuming that the slave would inherit the host's queue_depth, which
that commit sets to the same value.
This is incorrect, without the scsi_change_queue_depth() call the slave's
queue_depth defaults to 1, introducing a performance regression.
This commit restores the call, fixing the performance regression.
Cc: stable@vger.kernel.org
Fixes: 198de51dbc ("USB: uas: Limit qdepth at the scsi-host level")
Reported-by: Tom Yan <tom.ty89@gmail.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Commit 198de51dbc ("USB: uas: Limit qdepth at the scsi-host level") made
qdepth limit set in host template (`.can_queue = MAX_CMNDS`) redundant.
Removing it to avoid confusion.
Signed-off-by: Tom Yan <tom.ty89@gmail.com>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The Acer C120 LED Projector is a USB-3 connected pico projector which
takes both its power and video data from USB-3.
In combination with some hubs this device does not play well with
lpm, so disable lpm for it.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Properly sort all the entries by vendor id.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit b1c127ae99 ("usb: host: xhci: plat: make use of new methods in
xhci_plat_priv") sets xhci->quirks before calling xhci_gen_setup(), which
will overwrite them.
Don't overwite the quirks, just add the new ones
Fixes: b1c127ae99 ("usb: host: xhci: plat: make use of new methods in xhci_plat_priv")
Reported-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Cc: Felipe Balbi <felipe.balbi@linux.intel.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
On some platforms, the clocks might be registered by a platform
driver. When this is the case, the clock platform driver may very well
be probed after xhci-plat, in which case the first probe() invocation
of xhci-plat will receive -EPROBE_DEFER as the return value of
devm_clk_get().
The current code handles that as a normal error, and simply assumes
that this means that the system doesn't have a clock for the XHCI
controller, and continues probing without calling
clk_prepare_enable(). Unfortunately, this doesn't work on systems
where the XHCI controller does have a clock, but that clock is
provided by another platform driver. In order to fix this situation,
we handle the -EPROBE_DEFER error condition specially, and abort the
XHCI controller probe(). It will be retried later automatically, the
clock will be available, devm_clk_get() will succeed, and the probe()
will continue with the clock prepared and enabled as expected.
In practice, such issue is seen on the ARM64 Marvell 7K/8K platform,
where the clocks are registered by a platform driver.
Cc: <stable@vger.kernel.org>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
If commands timeout we mark them for abortion, then stop the command
ring, and turn the commands to no-ops and finally restart the command
ring.
If the host is working properly the no-op commands will finish and
pending completions are called.
If we notice the host is failing, driver clears the command ring and
completes, deletes and frees all pending commands.
There are two separate cases reported where host is believed to work
properly but is not. In the first case we successfully stop the ring
but no abort or stop command ring event is ever sent and host locks up.
The second case is if a host is removed, command times out and driver
believes the ring is stopped, and assumes it will be restarted, but
actually ends up timing out on the same command forever.
If one of the pending commands has the xhci->mutex held it will block
xhci_stop() in the remove codepath which otherwise would cleanup pending
commands.
Add a check that clears all pending commands in case host is removed,
or we are stuck timing out on the same command. Also restart the
command timeout timer when stopping the command ring to ensure we
recive an ring stop/abort event.
Cc: stable <stable@vger.kernel.org>
Tested-by: Joe Lawrence <joe.lawrence@stratus.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Under stress occasions some TI devices might not return early when
reading the status register during the quirk invocation of xhci_irq made
by usb_hcd_pci_remove. This means that instead of returning, we end up
handling this interruption in the middle of a shutdown. Since
xhci->event_ring has already been freed in xhci_mem_cleanup, we end up
accessing freed memory, causing the Oops below.
commit 8c24d6d7b0 ("usb: xhci: stop everything on the first call to
xhci_stop") is the one that changed the instant in which we clean up the
event queue when stopping a device. Before, we didn't call
xhci_mem_cleanup at the first time xhci_stop is executed (for the shared
HCD), instead, we only did it after the invocation for the primary HCD,
much later at the removal path. The code flow for this oops looks like
this:
xhci_pci_remove()
usb_remove_hcd(xhci->shared)
xhci_stop(xhci->shared)
xhci_halt()
xhci_mem_cleanup(xhci); // Free the event_queue
usb_hcd_pci_remove(primary)
xhci_irq() // Access the event_queue if STS_EINT is set. Crash.
xhci_stop()
xhci_halt()
// return early
The fix modifies xhci_stop to only cleanup the xhci data when releasing
the primary HCD. This way, we still have the event_queue configured
when invoking xhci_irq. We still halt the device on the first call to
xhci_stop, though.
I could reproduce this issue several times on the mainline kernel by
doing a bind-unbind stress test with a specific storage gadget attached.
I also ran the same test over-night with my patch applied and didn't
observe the issue anymore.
[ 113.334124] Unable to handle kernel paging request for data at address 0x00000028
[ 113.335514] Faulting instruction address: 0xd00000000d4f767c
[ 113.336839] Oops: Kernel access of bad area, sig: 11 [#1]
[ 113.338214] SMP NR_CPUS=1024 NUMA PowerNV
[c000000efe47ba90] c000000000720850 usb_hcd_irq+0x50/0x80
[c000000efe47bac0] c00000000073d328 usb_hcd_pci_remove+0x68/0x1f0
[c000000efe47bb00] d00000000daf0128 xhci_pci_remove+0x78/0xb0
[xhci_pci]
[c000000efe47bb30] c00000000055cf70 pci_device_remove+0x70/0x110
[c000000efe47bb70] c00000000061c6bc __device_release_driver+0xbc/0x190
[c000000efe47bba0] c00000000061c7d0 device_release_driver+0x40/0x70
[c000000efe47bbd0] c000000000619510 unbind_store+0x120/0x150
[c000000efe47bc20] c0000000006183c4 drv_attr_store+0x64/0xa0
[c000000efe47bc60] c00000000039f1d0 sysfs_kf_write+0x80/0xb0
[c000000efe47bca0] c00000000039e14c kernfs_fop_write+0x18c/0x1f0
[c000000efe47bcf0] c0000000002e962c __vfs_write+0x6c/0x190
[c000000efe47bd90] c0000000002eab40 vfs_write+0xc0/0x200
[c000000efe47bde0] c0000000002ec85c SyS_write+0x6c/0x110
[c000000efe47be30] c000000000009260 system_call+0x38/0x108
Signed-off-by: Gabriel Krisman Bertazi <krisman@linux.vnet.ibm.com>
Cc: Roger Quadros <rogerq@ti.com>
Cc: joel@jms.id.au
Cc: stable@vger.kernel.org
Reviewed-by: Roger Quadros <rogerq@ti.com>
Cc: <stable@vger.kernel.org> #v4.3+
Tested-by: Joel Stanley <joel@jms.id.au>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
As of core revision 2.60a the recommended programming model is to set
the ClearPendIN bit when issuing a Clear Stall EP command for IN
endpoints. This is to prevent an issue where some (non-compliant) hosts
may not send ACK TPs for pending IN transfers due to a mishandled error
condition. Synopsys STAR 9000614252.
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Set USB3_FORCE_VBUSVALID when configured for USB_DR_MODE_PERIPHERAL
mode, as it is required to have a working setup.
This worked on the internal driver by relying on the reset
value of the syscfg register as the bits aren't explicity cleared
and set like the upstream driver.
Also add a comment about what setting this bit means.
Signed-off-by: Peter Griffin <peter.griffin@linaro.org>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
In OS descriptors handling, if ctrl->bRequestType is
USB_RECIP_DEVICE and w_index != 0x4 or (w_value >> 8)
is true, it will not assign a valid value to req->length,
but use the default value(-EOPNOTSUPP), and queue an
OS desc request with the invalid req->length. It always
happens on the platforms which use os_desc (for example:
rk3366, rk3399), and cause kernel panic as follows
(use dwc3 driver):
Unable to handle kernel paging request at virtual address ffffffc0f7e00000
Internal error: Oops: 96000146 [#1] PREEMPT SMP
PC is at __dma_clean_range+0x18/0x30
LR is at __swiotlb_map_page+0x50/0x64
Call trace:
[<ffffffc0000930f8>] __dma_clean_range+0x18/0x30
[<ffffffc00062214c>] usb_gadget_map_request+0x134/0x1b0
[<ffffffc0005c289c>] __dwc3_ep0_do_control_data+0x110/0x14c
[<ffffffc0005c2d38>] __dwc3_gadget_ep0_queue+0x198/0x1b8
[<ffffffc0005c2e18>] dwc3_gadget_ep0_queue+0xc0/0xe8
[<ffffffc00061cfec>] composite_ep0_queue.constprop.14+0x34/0x98
[<ffffffc00061dfb0>] composite_setup+0xf60/0x100c
[<ffffffc0006204dc>] android_setup+0xd8/0x138
[<ffffffc0005c29a4>] dwc3_ep0_delegate_req+0x34/0x50
[<ffffffc0005c3534>] dwc3_ep0_interrupt+0x5dc/0xb58
[<ffffffc0005c0c3c>] dwc3_thread_interrupt+0x15c/0xa24
With this patch, the gadget driver will not queue
a request and return immediately if req->length is
invalid. And the usb controller driver can handle
the unsupport request correctly.
Signed-off-by: William Wu <william.wu@rock-chips.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
If c->cdev->use_os_string flag is not set,
don't need to invoke ffs_do_os_descs() in _ffs_func_bind.
So uninitialized ext_compat_id pointer won't be accessed by
__ffs_func_bind_do_os_desc to cause kernel panic.
Signed-off-by: Jim Lin <jilin@nvidia.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Commit dc8c46a5ae ("usb: gadget: f_tcm: convert to new function
interface with backward compatibility") introduced a possible out
of bounds memory access:
If tpg is not found in function usbg_drop_tpg,
tpg_instances[TPG_INSTANCES] is accessed.
Fixes: dc8c46a5ae ("usb: gadget: f_tcm: convert to new function interface with backward compatibility")
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Function in_rq_cur copies random bytes from the stack.
Zero the memory instead.
Fixes: 132fcb4608 ("usb: gadget: Add Audio Class 2.0 Driver")
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
A patch that went into Linux-4.4 to fix big-endian mode on a Lantiq
MIPS system unfortunately broke big-endian operation on PowerPC
APM82181 as reported by Christian Lamparter, and likely other
systems.
It actually introduced multiple issues:
- it broke big-endian ARM kernels: any machine that was working
correctly with a little-endian kernel is no longer using byteswaps
on big-endian kernels, which clearly breaks them.
- On PowerPC the same thing must be true: if it was working before,
using big-endian kernels is now broken. Unlike ARM, 32-bit PowerPC
usually uses big-endian kernels, so they are likely all broken.
- The barrier for dwc2_writel is on the wrong side of the __raw_writel(),
so the MMIO no longer synchronizes with DMA operations.
- On architectures that require specific CPU instructions for MMIO
access, using the __raw_ variant may turn this into a pointer
dereference that does not have the same effect as the readl/writel.
This patch is a simple revert for all architectures other than MIPS,
in the hope that we can more easily backport it to fix the regression
on PowerPC and ARM systems without breaking the Lantiq system again.
We should follow this up with a more elaborate change to add runtime
detection of endianness, to make sure it also works on all other
combinations of architectures and implementations of the usb-dwc2
device. That patch however will be fairly large and not appropriate
for backports to stable kernels.
Felipe suggested a different approach, using an endianness switching
register to always put the device into LE mode, but unfortunately
the dwc2 hardware does not provide a generic way to do that. Also,
I see no practical way of addressing the problem more generally by
patching architecture specific code on MIPS.
Fixes: 95c8bc3609 ("usb: dwc2: Use platform endianness when accessing registers")
Acked-by: John Youn <johnyoun@synopsys.com>
Tested-by: Christian Lamparter <chunkeey@googlemail.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Current __ffs_data_do_os_desc() of f_fs.c will check reserved1 field
of OS_DESC_EXT_COMPAT and return -EINVAL if it's 1.
But MS OS 1.0 Descriptors
http://msdn.microsoft.com/en-us/library/windows/hardware/gg463179.aspx
defines that field to be 1.
Signed-off-by: Jim Lin <jilin@nvidia.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Device qualifier descriptor is now generated by composite.c
code. So let's fix this old comment by removing parts which
are no longer valid.
Signed-off-by: Krzysztof Opasiak <k.opasiak@samsung.com>
Signed-off-by: Krzysztof Opasiak <kopasiak90@gmail.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
This descriptor is never used. Currently device qualifier
descriptor is generated by compossite code so no need to
keep it in function file.
Signed-off-by: Krzysztof Opasiak <k.opasiak@samsung.com>
Signed-off-by: Krzysztof Opasiak <kopasiak90@gmail.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
This descriptor is never used. Currently device qualifier
descriptor is generated by compossite code, so no need to
keep it in function file.
Signed-off-by: Krzysztof Opasiak <k.opasiak@samsung.com>
Signed-off-by: Krzysztof Opasiak <kopasiak90@gmail.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Add a check in dwc2_hsotg_ep_sethalt() so that it does not halt
isochronous endpoints.
Signed-off-by: Vahram Aharonyan <vahrama@synopsys.com>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
The gadget API function usb_ep_set_halt() expects the gadget to return
-EAGAIN if the ep is active. Add support for this behavior.
Otherwise this may break mass storage protocol if a STALL is attempted
on the endpoint.
Signed-off-by: Vahram Aharonyan <vahrama@synopsys.com>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
This loop is supposed to set all the .num[] values to -1 but it's off by
one so it skips the first element and sets one element past the end of
the array.
I've cleaned up the loop a little as well.
Fixes: ddf8abd259 ('USB: f_fs: the FunctionFS driver')
Acked-by: Michal Nazarewicz <mina86@mina86.com>
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
dwc3-exynos has two problems during init if the regulators are slow
to come up (for instance if the I2C bus driver is not on the initramfs)
and return probe deferral. First, every time this happens, the driver
leaks the USB phys created; they need to be deallocated on error.
Second, since the phy devices are created before the regulators fail,
this means that there's a new device to re-trigger deferred probing,
which causes it to essentially go into a busy loop of re-probing the
device until the regulators come up.
Move the phy creation to after the regulators have succeeded, and also
fix cleanup on failure. On my ODROID XU4 system (with Debian's initramfs
which doesn't contain the I2C driver), this reduces the number of probe
attempts (for each of the two controllers) from more than 2000 to eight.
Signed-off-by: Steinar H. Gunderson <sesse@google.com>
Reviewed-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Reviewed-by: Vivek Gautam <gautam.vivek@samsung.com>
Fixes: d720f057fd ("usb: dwc3: exynos: add nop transceiver support")
Cc: <stable@vger.kernel.org>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
By default user could store only valid UDC name in configfs UDC
attr by doing:
echo $UDC_NAME > UDC
Commit (855ed04 "usb: gadget: udc-core: independent registration of
gadgets and gadget drivers") broke this behavior and allowed to store
any arbitrary string in UDC file and udc core was waiting for such
controller to appear.
echo "any arbitrary string here" > UDC
This commit fix this by adding a flag which prevents configfs
gadget from being added to list of pending drivers if UDC with
given name has not been found.
Signed-off-by: Krzysztof Opasiak <k.opasiak@samsung.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Pull SCSI target updates from Nicholas Bellinger:
"Here are the outstanding target pending updates for v4.7-rc1.
The highlights this round include:
- Allow external PR/ALUA metadata path be defined at runtime via top
level configfs attribute (Lee)
- Fix target session shutdown bug for ib_srpt multi-channel (hch)
- Make TFO close_session() and shutdown_session() optional (hch)
- Drop se_sess->sess_kref + convert tcm_qla2xxx to internal kref
(hch)
- Add tcm_qla2xxx endpoint attribute for basic FC jammer (Laurence)
- Refactor iscsi-target RX/TX PDU encode/decode into common code
(Varun)
- Extend iscsit_transport with xmit_pdu, release_cmd, get_rx_pdu,
validate_parameters, and get_r2t_ttt for generic ISO offload
(Varun)
- Initial merge of cxgb iscsi-segment offload target driver (Varun)
The bulk of the changes are Chelsio's new driver, along with a number
of iscsi-target common code improvements made by Varun + Co along the
way"
* 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending: (29 commits)
iscsi-target: Fix early sk_data_ready LOGIN_FLAGS_READY race
cxgbit: Use type ISCSI_CXGBIT + cxgbit tpg_np attribute
iscsi-target: Convert transport drivers to signal rdma_shutdown
iscsi-target: Make iscsi_tpg_np driver show/store use generic code
tcm_qla2xxx Add SCSI command jammer/discard capability
iscsi-target: graceful disconnect on invalid mapping to iovec
target: need_to_release is always false, remove redundant check and kfree
target: remove sess_kref and ->shutdown_session
iscsi-target: remove usage of ->shutdown_session
tcm_qla2xxx: introduce a private sess_kref
target: make close_session optional
target: make ->shutdown_session optional
target: remove acl_stop
target: consolidate and fix session shutdown
cxgbit: add files for cxgbit.ko
iscsi-target: export symbols
iscsi-target: call complete on conn_logout_comp
iscsi-target: clear tx_thread_active
iscsi-target: add new offload transport type
iscsi-target: use conn_transport->transport_type in text rsp
...
Here's the big pull request for USB and PHY drivers for 4.7-rc1
Full details in the shortlog, but it's the normal major gadget driver
updates, phy updates, new usbip code, as well as a bit of lots of other
stuff.
All have been in linux-next with no reported issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'usb-4.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB updates from Greg KH:
"Here's the big pull request for USB and PHY drivers for 4.7-rc1
Full details in the shortlog, but it's the normal major gadget driver
updates, phy updates, new usbip code, as well as a bit of lots of
other stuff.
All have been in linux-next with no reported issues"
* tag 'usb-4.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (164 commits)
USB: serial: ti_usb_3410_5052: add MOXA UPORT 11x0 support
USB: serial: fix minor-number allocation
USB: serial: quatech2: fix use-after-free in probe error path
USB: serial: mxuport: fix use-after-free in probe error path
USB: serial: keyspan: fix debug and error messages
USB: serial: keyspan: fix URB unlink
USB: serial: keyspan: fix use-after-free in probe error path
USB: serial: io_edgeport: fix memory leaks in probe error path
USB: serial: io_edgeport: fix memory leaks in attach error path
usb: Remove unnecessary space before operator ','.
usb: Remove unnecessary space before open square bracket.
USB: FHCI: avoid redundant condition
usb: host: xhci-rcar: Avoid long wait in xhci_reset()
usb/host/fotg210: remove dead code in create_sysfs_files
usb: wusbcore: Do not initialise statics to 0.
usb: wusbcore: Remove space before ',' and '(' .
USB: serial: cp210x: clean up CRTSCTS flag code
USB: serial: cp210x: get rid of magic numbers in CRTSCTS flag code
USB: serial: cp210x: fix hardware flow-control disable
USB: serial: option: add even more ZTE device ids
...
Here's the large TTY and Serial driver update for 4.7-rc1.
A few new serial drivers are added here, and Peter has fixed a bunch of
long-standing bugs in the tty layer and serial drivers as normal. Full
details in the shortlog.
All of these have been in linux-next for a while with no reported issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'tty-4.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Pull tty and serial driver updates from Greg KH:
"Here's the large TTY and Serial driver update for 4.7-rc1.
A few new serial drivers are added here, and Peter has fixed a bunch
of long-standing bugs in the tty layer and serial drivers as normal.
Full details in the shortlog.
All of these have been in linux-next for a while with no reported
issues"
* tag 'tty-4.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (88 commits)
MAINTAINERS: 8250: remove website reference
serial: core: Fix port mutex assert if lockdep disabled
serial: 8250_dw: fix wrong logic in dw8250_check_lcr()
tty: vt, finish looping on duplicate
tty: vt, return error when con_startup fails
QE-UART: add "fsl,t1040-ucc-uart" to of_device_id
serial: mctrl_gpio: Drop support for out1-gpios and out2-gpios
serial: 8250dw: Add device HID for future AMD UART controller
Fix OpenSSH pty regression on close
serial: mctrl_gpio: add IRQ locking
serial: 8250: Integrate Fintek into 8250_base
serial: mps2-uart: add support for early console
serial: mps2-uart: add MPS2 UART driver
dt-bindings: document the MPS2 UART bindings
serial: sirf: Use generic uart-has-rtscts DT property
serial: sirf: Introduce helper variable struct device_node *np
serial: mxs-auart: Use generic uart-has-rtscts DT property
serial: imx: Use generic uart-has-rtscts DT property
doc: DT: Add Generic Serial Device Tree Bindings
serial: 8250: of: Make tegra_serial_handle_break() static
...
Pull MIPS updates from Ralf Baechle:
"This is the main pull request for MIPS for 4.7. Here's the summary of
the changes:
- ATH79: Support for DTB passuing using the UHI boot protocol
- ATH79: Remove support for builtin DTB.
- ATH79: Add zboot debug serial support.
- ATH79: Add initial support for Dragino MS14 (Dragine 2), Onion Omega
and DPT-Module.
- ATH79: Update devicetree clock support for AR9132 and AR9331.
- ATH79: Cleanup the DT code.
- ATH79: Support newer SOCs in ath79_ddr_ctrl_init.
- ATH79: Fix regression in PCI window initialization.
- BCM47xx: Move SPROM driver to drivers/firmware/
- BCM63xx: Enable partition parser in defconfig.
- BMIPS: BMIPS5000 has I cache filing from D cache
- BMIPS: BMIPS: Add cpu-feature-overrides.h
- BMIPS: Add Whirlwind support
- BMIPS: Adjust mips-hpt-frequency for BCM7435
- BMIPS: Remove maxcpus from BCM97435SVMB DTS
- BMIPS: Add missing 7038 L1 register cells to BCM7435
- BMIPS: Various tweaks to initialization code.
- BMIPS: Enable partition parser in defconfig.
- BMIPS: Cache tweaks.
- BMIPS: Add UART, I2C and SATA devices to DT.
- BMIPS: Add BCM6358 and BCM63268support
- BMIPS: Add device tree example for BCM6358.
- BMIPS: Improve Improve BCM6328 and BCM6368 device trees
- Lantiq: Add support for device tree file from boot loader
- Lantiq: Allow build with no built-in DT.
- Loongson 3: Reserve 32MB for RS780E integrated GPU.
- Loongson 3: Fix build error after ld-version.sh modification
- Loongson 3: Move chipset ACPI code from drivers to arch.
- Loongson 3: Speedup irq processing.
- Loongson 3: Add basic Loongson 3A support.
- Loongson 3: Set cache flush handlers to nop.
- Loongson 3: Invalidate special TLBs when needed.
- Loongson 3: Fast TLB refill handler.
- MT7620: Fallback strategy for invalid syscfg0.
- Netlogic: Fix CP0_EBASE redefinition warnings
- Octeon: Initialization fixes
- Octeon: Add DTS files for the D-Link DSR-1000N and EdgeRouter Lite
- Octeon: Enable add Octeon-drivers in cavium_octeon_defconfig
- Octeon: Correctly handle endian-swapped initramfs images.
- Octeon: Support CN73xx, CN75xx and CN78xx.
- Octeon: Remove dead code from cvmx-sysinfo.
- Octeon: Extend number of supported CPUs past 32.
- Octeon: Remove some code limiting NR_IRQS to 255.
- Octeon: Simplify octeon_irq_ciu_gpio_set_type.
- Octeon: Mark some functions __init in smp.c
- Octeon: Octeon: Add Octeon III CN7xxx interface detection
- PIC32: Add serial driver and bindings for it.
- PIC32: Add PIC32 deadman timer driver and bindings.
- PIC32: Add PIC32 clock timer driver and bindings.
- Pistachio: Determine SoC revision during boot
- Sibyte: Fix Kconfig dependencies of SIBYTE_BUS_WATCHER.
- Sibyte: Strip redundant comments from bcm1480_regs.h.
- Panic immediately if panic_on_oops is set.
- module: fix incorrect IS_ERR_VALUE macro usage.
- module: Make consistent use of pr_*
- Remove no longer needed work_on_cpu() call.
- Remove CONFIG_IPV6_PRIVACY from defconfigs.
- Fix registers of non-crashing CPUs in dumps.
- Handle MIPSisms in new vmcore_elf32_check_arch.
- Select CONFIG_HANDLE_DOMAIN_IRQ and make it work.
- Allow RIXI to be used on non-R2 or R6 cores.
- Reserve nosave data for hibernation
- Fix siginfo.h to use strict POSIX types.
- Don't unwind user mode with EVA.
- Fix watchpoint restoration
- Ptrace watchpoints for R6.
- Sync icache when it fills from dcache
- I6400 I-cache fills from dcache.
- Various MSA fixes.
- Cleanup MIPS_CPU_* definitions.
- Signal: Move generic copy_siginfo to signal.h
- Signal: Fix uapi include in exported asm/siginfo.h
- Timer fixes for sake of KVM.
- XPA TLB refill fixes.
- Treat perf counter feature
- Update John Crispin's email address
- Add PIC32 watchdog and bindings.
- Handle R10000 LL/SC bug in set_pte()
- cpufreq: Various fixes for Longson1.
- R6: Fix R2 emulation.
- mathemu: Cosmetic fix to ADDIUPC emulation, plenty of other small fixes
- ELF: ABI and FP fixes.
- Allow for relocatable kernel and use that to support KASLR.
- Fix CPC_BASE_ADDR mask
- Plenty fo smp-cps, CM, R6 and M6250 fixes.
- Make reset_control_ops const.
- Fix kernel command line handling of leading whitespace.
- Cleanups to cache handling.
- Add brcm, bcm6345-l1-intc device tree bindings.
- Use generic clkdev.h header
- Remove CLK_IS_ROOT usage.
- Misc small cleanups.
- CM: Fix compilation error when !MIPS_CM
- oprofile: Fix a preemption issue
- Detect DSP ASE v3 support:1"
* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus: (275 commits)
MIPS: pic32mzda: fix getting timer clock rate.
MIPS: ath79: fix regression in PCI window initialization
MIPS: ath79: make ath79_ddr_ctrl_init() compatible for newer SoCs
MIPS: Fix VZ probe gas errors with binutils <2.24
MIPS: perf: Fix I6400 event numbers
MIPS: DEC: Export `ioasic_ssr_lock' to modules
MIPS: MSA: Fix a link error on `_init_msa_upper' with older GCC
MIPS: CM: Fix compilation error when !MIPS_CM
MIPS: Fix genvdso error on rebuild
USB: ohci-jz4740: Remove obsolete driver
MIPS: JZ4740: Probe OHCI platform device via DT
MIPS: JZ4740: Qi LB60: Remove support for AVT2 variant
MIPS: pistachio: Determine SoC revision during boot
MIPS: BMIPS: Adjust mips-hpt-frequency for BCM7435
mips: mt7620: fallback to SDRAM when syscfg0 does not have a valid value for the memory type
MIPS: Prevent "restoration" of MSA context in non-MSA kernels
MIPS: cevt-r4k: Dynamically calculate min_delta_ns
MIPS: malta-time: Take seconds into account
MIPS: malta-time: Start GIC count before syncing to RTC
MIPS: Force CPUs to lose FP context during mode switches
...
This patch includes the usual quota of driver updates (bnx2fc, mp3sas,
hpsa, ncr5380, lpfc, hisi_sas, snic, aacraid, megaraid_sas) there's
also a multiqueue update for scsi_debug, assorted bug fixes and a few
other minor updates (refactor of scsi_sg_pools into generic code, alua
and VPD updates, and struct timeval conversions).
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
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Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI updates from James Bottomley:
"First round of SCSI updates for the 4.6+ merge window.
This batch includes the usual quota of driver updates (bnx2fc, mp3sas,
hpsa, ncr5380, lpfc, hisi_sas, snic, aacraid, megaraid_sas). There's
also a multiqueue update for scsi_debug, assorted bug fixes and a few
other minor updates (refactor of scsi_sg_pools into generic code, alua
and VPD updates, and struct timeval conversions)"
* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (138 commits)
mpt3sas: Used "synchronize_irq()"API to synchronize timed-out IO & TMs
mpt3sas: Set maximum transfer length per IO to 4MB for VDs
mpt3sas: Updating mpt3sas driver version to 13.100.00.00
mpt3sas: Fix initial Reference tag field for 4K PI drives.
mpt3sas: Handle active cable exception event
mpt3sas: Update MPI header to 2.00.42
Revert "lpfc: Delete unnecessary checks before the function call mempool_destroy"
eata_pio: missing break statement
hpsa: Fix type ZBC conditional checks
scsi_lib: Decode T10 vendor IDs
scsi_dh_alua: do not fail for unknown VPD identification
scsi_debug: use locally assigned naa
scsi_debug: uuid for lu name
scsi_debug: vpd and mode page work
scsi_debug: add multiple queue support
bfa: fix bfa_fcb_itnim_alloc() error handling
megaraid_sas: Downgrade two success messages to info
cxlflash: Fix to resolve dead-lock during EEH recovery
scsi_debug: rework resp_report_luns
scsi_debug: use pdt constants
...
Driver updates for ARM SoCs, these contain various things that touch
the drivers/ directory but got merged through arm-soc for practical
reasons. For the most part, this is now related to power management
controllers, which have not yet been abstracted into a separate
subsystem, and typically require some code in drivers/soc or arch/arm
to control the power domains.
Another large chunk here is a rework of the NVIDIA Tegra USB3.0
support, which was surprisingly tricky and took a long time to
get done.
Finally, reset controller handling as always gets merged through here
as well.
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Merge tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC driver updates from Arnd Bergmann:
"Driver updates for ARM SoCs, these contain various things that touch
the drivers/ directory but got merged through arm-soc for practical
reasons.
For the most part, this is now related to power management
controllers, which have not yet been abstracted into a separate
subsystem, and typically require some code in drivers/soc or arch/arm
to control the power domains.
Another large chunk here is a rework of the NVIDIA Tegra USB3.0
support, which was surprisingly tricky and took a long time to get
done.
Finally, reset controller handling as always gets merged through here
as well"
* tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (97 commits)
arm-ccn: Enable building as module
soc/tegra: pmc: Add generic PM domain support
usb: xhci: tegra: Add Tegra210 support
usb: xhci: Add NVIDIA Tegra XUSB controller driver
dt-bindings: usb: xhci-tegra: Add Tegra210 XUSB controller support
dt-bindings: usb: Add NVIDIA Tegra XUSB controller binding
PCI: tegra: Support per-lane PHYs
dt-bindings: pci: tegra: Update for per-lane PHYs
phy: tegra: Add Tegra210 support
phy: Add Tegra XUSB pad controller support
dt-bindings: phy: tegra-xusb-padctl: Add Tegra210 support
dt-bindings: phy: Add NVIDIA Tegra XUSB pad controller binding
phy: core: Allow children node to be overridden
clk: tegra: Add interface to enable hardware control of SATA/XUSB PLLs
drivers: firmware: psci: make two helper functions inline
soc: renesas: rcar-sysc: Add support for R-Car H3 power areas
soc: renesas: rcar-sysc: Add support for R-Car E2 power areas
soc: renesas: rcar-sysc: Add support for R-Car M2-N power areas
soc: renesas: rcar-sysc: Add support for R-Car M2-W power areas
soc: renesas: rcar-sysc: Add support for R-Car H2 power areas
...
These updates fixes a number of issues where resources were not properly
released on probe errors. Included is also a fix for hardware
flow-control disable for cp210x.
Support for Moxa UPort 11x0 is added to the ti_usb_3410_5052 driver, and
included are also some general code clean ups.
Signed-off-by: Johan Hovold <johan@kernel.org>
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Merge tag 'usb-serial-4.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/johan/usb-serial into usb-next
Johan writes:
USB-serial updates for v4.7-rc1
These updates fixes a number of issues where resources were not properly
released on probe errors. Included is also a fix for hardware
flow-control disable for cp210x.
Support for Moxa UPort 11x0 is added to the ti_usb_3410_5052 driver, and
included are also some general code clean ups.
Signed-off-by: Johan Hovold <johan@kernel.org>
The ohci-platform driver can control the clock, while usb-nop-xceiv
as the PHY can control the vbus regulator. So this JZ4740-specific
glue is not needed anymore.
Signed-off-by: Maarten ter Huurne <maarten@treewalker.org>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Lars-Peter Clausen <lars@metafoo.de>
Cc: Paul Cercueil <paul@crapouillou.net>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/13105/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Add support for :
- UPort 1110 : 1 port RS-232 USB to Serial Hub.
- UPort 1130 : 1 port RS-422/485 USB to Serial Hub.
- UPort 1130I : 1 port RS-422/485 USB to Serial Hub with Isolation.
- UPort 1150 : 1 port RS-232/422/485 USB to Serial Hub.
- UPort 1150I : 1 port RS-232/422/485 USB to Serial Hub with Isolation.
These devices are based on TI 3410 chip.
Signed-off-by: Mathieu OTHACEHE <m.othacehe@gmail.com>
[johan: fix rs485-only check ]
Signed-off-by: Johan Hovold <johan@kernel.org>
Turns out the template and thus many drivers got the return value wrong:
0 means the fabrics driver needs to put a session reference, which no
driver except for the iSCSI target drivers did. Fortunately none of these
drivers supports explicit Node ACLs, so the bug was harmless.
Even without that only qla2xxx and iscsi every did real work in
shutdown_session, so get rid of the boilerplate code in all other
drivers.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Due to a missing upper bound, invalid minor numbers could be assigned to
ports. Such devices would later fail to register, but let's catch this
early as intended and avoid having devices with only a subset of their
ports registered (potentially the empty set).
Signed-off-by: Johan Hovold <johan@kernel.org>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The interface read URB is submitted in attach, but was only unlinked by
the driver at disconnect.
In case of a late probe error (e.g. due to failed minor allocation),
disconnect is never called and we would end up with active URBs for an
unbound interface. This in turn could lead to deallocated memory being
dereferenced in the completion callback.
Fixes: f7a33e608d ("USB: serial: add quatech2 usb to serial driver")
Cc: stable <stable@vger.kernel.org> # v3.5: 40d0473849
Signed-off-by: Johan Hovold <johan@kernel.org>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The interface read and event URBs are submitted in attach, but were
never explicitly unlinked by the driver. Instead the URBs would have
been killed by usb-serial core on disconnect.
In case of a late probe error (e.g. due to failed minor allocation),
disconnect is never called and we could end up with active URBs for an
unbound interface. This in turn could lead to deallocated memory being
dereferenced in the completion callbacks.
Fixes: ee467a1f20 ("USB: serial: add Moxa UPORT 12XX/14XX/16XX
driver")
Cc: stable <stable@vger.kernel.org> # v3.14
Signed-off-by: Johan Hovold <johan@kernel.org>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The URB status is signed and should be printed using %d rather than %x.
Also print endpoint addresses consistently using %x rather than %d, and
merge a broken-up error message string.
Signed-off-by: Johan Hovold <johan@kernel.org>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
A driver must not rely on the URB status field to try to determine if an
URB is active.
Signed-off-by: Johan Hovold <johan@kernel.org>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The interface instat and indat URBs were submitted in attach, but never
unlinked in release before deallocating the corresponding transfer
buffers.
In the case of a late probe error (e.g. due to failed minor allocation),
disconnect would not have been called before release, causing the
buffers to be freed while the URBs are still in use. We'd also end up
with active URBs for an unbound interface.
Fixes: f9c99bb8b3 ("USB: usb-serial: replace shutdown with disconnect,
release")
Cc: stable <stable@vger.kernel.org> # v2.6.31
Signed-off-by: Johan Hovold <johan@kernel.org>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
URBs and buffers allocated in attach for Epic devices would never be
deallocated in case of a later probe error (e.g. failure to allocate
minor numbers) as disconnect is then never called.
Fix by moving deallocation to release and making sure that the
URBs are first unlinked.
Fixes: f9c99bb8b3 ("USB: usb-serial: replace shutdown with disconnect,
release")
Cc: stable <stable@vger.kernel.org> # v2.6.31
Signed-off-by: Johan Hovold <johan@kernel.org>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Private data, URBs and buffers allocated for Epic devices during
attach were never released on errors (e.g. missing endpoints).
Fixes: 6e8cf7751f ("USB: add EPIC support to the io_edgeport driver")
Cc: stable <stable@vger.kernel.org> # v2.6.21
Signed-off-by: Johan Hovold <johan@kernel.org>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
In netdevice.h we removed the structure in net-next that is being
changes in 'net'. In macsec.c and rtnetlink.c we have overlaps
between fixes in 'net' and the u64 attribute changes in 'net-next'.
The mlx5 conflicts have to do with vxlan support dependencies.
Signed-off-by: David S. Miller <davem@davemloft.net>
This set of patches introduces a driver for the XUSB controller found on
NVIDIA Tegra SoCs. When loaded with a firmware (available via the linux-
firmware repository), it provides an XHCI-compatible interface.
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Merge tag 'tegra-for-4.7-xhci' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux into next/drivers
Merge "usb: host: xhci-tegra: Changes for v4.7-rc1" from Thierry Reding:
This set of patches introduces a driver for the XUSB controller found on
NVIDIA Tegra SoCs. When loaded with a firmware (available via the linux-
firmware repository), it provides an XHCI-compatible interface.
* tag 'tegra-for-4.7-xhci' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux:
usb: xhci: tegra: Add Tegra210 support
usb: xhci: Add NVIDIA Tegra XUSB controller driver
dt-bindings: usb: xhci-tegra: Add Tegra210 XUSB controller support
dt-bindings: usb: Add NVIDIA Tegra XUSB controller binding
Remove unnecessary space before open square bracket.
Signed-off-by: Sandhya Bankar <bankarsandhya512@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The right part of the following or expression is only evaluated if
td is nonzero.
!td || (td && td.status == USB_TD_INPROGRESS)
So no need to check td again.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The firmware of R-Car USB 3.0 host controller will control the reset.
So, if the xhci driver doesn't do firmware downloading (e.g. kernel
configuration is CONFIG_USB_XHCI_PLATFORM=y and CONFIG_USB_XHCI_RCAR
is not set), the reset of USB 3.0 host controller doesn't work
correctly. Then, the host controller will cause long wait in
xhci_reset() because the CMD_RESET bit of op_regs->command is not
cleared for 10 seconds.
So, this patch modifies the Kconfig to enable both CONFIG_USB_XHCI_PLATFORM
and CONFIG_USB_XHCI_RCAR.
Fixes: 4ac8918f3a (usb: host: xhci-plat: add support for the R-Car H2 and M2 xHCI controllers)
Cc: <stable@vger.kernel.org> # v3.17+
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Reviewed-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The goto in create_sysfs_files is never executed, so remove it
and clean up the code.
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Do not initialise statics to 0.
This patch is found by checkpatch.pl script.
Signed-off-by: Sandhya Bankar <bankarsandhya512@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Remove space before ',' and '(' .
This patch is detected by checkpatch.pl
Signed-off-by: Sandhya Bankar <bankarsandhya512@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Here are some more new device ids.
Signed-off-by: Johan Hovold <johan@kernel.org>
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Merge tag 'usb-serial-4.6-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/johan/usb-serial into usb-next
Johan writes:
USB-serial fixes for v4.6-rc7
Here are some more new device ids.
Signed-off-by: Johan Hovold <johan@kernel.org>
The CRTSCTS flag code cleared (and inconsistently) bits unrelated to
CRTSCTS functionality. It was also harder than necessary to read.
Signed-off-by: Konstantin Shkolnyy <konstantin.shkolnyy@gmail.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
Replaced magic numbers used in the CRTSCTS flag code with symbolic names
from the chip specification.
Signed-off-by: Konstantin Shkolnyy <konstantin.shkolnyy@gmail.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
A bug in the CRTSCTS handling caused RTS to alternate between
CRTSCTS=0 => "RTS is transmit active signal" and
CRTSCTS=1 => "RTS is used for receive flow control"
instead of
CRTSCTS=0 => "RTS is statically active" and
CRTSCTS=1 => "RTS is used for receive flow control"
This only happened after first having enabled CRTSCTS.
Signed-off-by: Konstantin Shkolnyy <konstantin.shkolnyy@gmail.com>
Fixes: 39a66b8d22 ("[PATCH] USB: CP2101 Add support for flow control")
Cc: stable <stable@vger.kernel.org>
[johan: reword commit message ]
Signed-off-by: Johan Hovold <johan@kernel.org>
Some for documentation, some for tiny changes, thanks.
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Merge tag 'usb-ci-v4.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/peter.chen/usb into usb-next
Hi Greg, below are changes for chipidea and OTG FSM, no major changes.
Some for documentation, some for tiny changes, thanks.
Add even more ZTE device ids.
Signed-off-by: lei liu <liu.lei78@zte.com.cn>
Cc: stable <stable@vger.kernel.org>
[johan: rebase and replace commit message ]
Signed-off-by: Johan Hovold <johan@kernel.org>
More ZTE device ids.
Signed-off-by: lei liu <liu.lei78@zte.com.cn>
Cc: stable <stable@vger.kernel.org>
[properly sort them - gregkh]
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
The stack object “ci” has a total size of 8 bytes. Its last 3 bytes
are padding bytes which are not initialized and leaked to userland
via “copy_to_user”.
Signed-off-by: Kangjie Lu <kjlu@gatech.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
In the original DWC3_DCFG_NUMP() was always zero. It looks like the
intent was to shift first and then do the mask.
Fixes: 2a58f9c12b ('usb: dwc3: gadget: disable automatic calculation of ACK TP NUMP')
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Felipe Balbi <balbi@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The current implemenentation restart the sent pattern for each entry in
the sg list. The receiving end expects a continuous pattern, and test
will fail unless scatterilst entries happen to be aligned with the
pattern
Fix this by calculating the pattern byte based on total sent size
instead of just the current sg entry.
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Fixes: 8b52490193 ("[PATCH] USB: usbtest: scatterlist OUT data pattern testing")
Cc: <stable@vger.kernel.org> # v2.6.18+
Acked-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The return type of usbhsp_setup_pipecfg() was u16 but it was returning
a negative value (-EINVAL). Lets have an additional argument which will
have pipecfg and just return the status (success or error) as the return
from the function.
Signed-off-by: Sudip Mukherjee <sudip.mukherjee@codethink.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
