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536,164 commits

Author SHA1 Message Date
Alexander Duyck
0ddcf43d5d ipv4: FIB Local/MAIN table collapse
This patch is meant to collapse local and main into one by converting
tb_data from an array to a pointer.  Doing this allows us to point the
local table into the main while maintaining the same variables in the
table.

As such the tb_data was converted from an array to a pointer, and a new
array called data is added in order to still provide an object for tb_data
to point to.

In order to track the origin of the fib aliases a tb_id value was added in
a hole that existed on 64b systems.  Using this we can also reverse the
merge in the event that custom FIB rules are enabled.

With this patch I am seeing an improvement of 20ns to 30ns for routing
lookups as long as custom rules are not enabled, with custom rules enabled
we fall back to split tables and the original behavior.

Signed-off-by: Alexander Duyck <alexander.h.duyck@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-11 16:22:14 -04:00
Paul E. McKenney
8038dad7e8 smpboot: Add common code for notification from dying CPU
RCU ignores offlined CPUs, so they cannot safely run RCU read-side code.
(They -can- use SRCU, but not RCU.)  This means that any use of RCU
during or after the call to arch_cpu_idle_dead().  Unfortunately,
commit 2ed53c0d6c added a complete() call, which will contain RCU
read-side critical sections if there is a task waiting to be awakened.

Which, as it turns out, there almost never is.  In my qemu/KVM testing,
the to-be-awakened task is not yet asleep more than 99.5% of the time.
In current mainline, failure is even harder to reproduce, requiring a
virtualized environment that delays the outgoing CPU by at least three
jiffies between the time it exits its stop_machine() task at CPU_DYING
time and the time it calls arch_cpu_idle_dead() from the idle loop.
However, this problem really can occur, especially in virtualized
environments, and therefore really does need to be fixed

This suggests moving back to the polling loop, but using a much shorter
wait, with gentle exponential backoff instead of the old 100-millisecond
wait.  Most of the time, the loop will exit without waiting at all,
and almost all of the remaining uses will wait only five microseconds.
If the outgoing CPU is preempted, a loop will wait one jiffy, then
increase the wait by a factor of 11/10ths, rounding up.  As before, there
is a five-second timeout.

This commit therefore provides common-code infrastructure to do the
dying-to-surviving CPU handoff in a safe manner.  This code also
provides an indication at CPU-online of whether the CPU to be onlined
previously timed out on offline.  The new cpu_check_up_prepare() function
returns -EBUSY if this CPU previously took more than five seconds to
go offline, or -EAGAIN if it has not yet managed to go offline.  The
rationale for -EAGAIN is that it might still be preempted, so an additional
wait might well find it correctly offlined.  Architecture-specific code
can decide how to handle these conditions.  Systems in which CPUs take
themselves completely offline might respond to an -EBUSY return as if
it was a zero (success) return.  Systems in which the surviving CPU must
take some action might take it at this time, or might simply mark the
other CPU as unusable.

Note that architectures that take the easy way out and simply pass the
-EBUSY and -EAGAIN upwards will change the sysfs API.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: <linux-api@vger.kernel.org>
Cc: <linux-arch@vger.kernel.org>
[ paulmck: Fixed state machine for architectures that don't check earlier
  CPU-hotplug results as suggested by James Hogan. ]
2015-03-11 13:20:25 -07:00
Andy Gross
e5fdad68d4 soc: qcom: gsbi: Add support for ADM CRCI muxing
This patch adds automatic configuration for the ADM CRCI muxing required to
support DMA operations for GSBI clients.  The GSBI mode and instance determine
the correct TCSR ADM CRCI MUX value that must be programmed so that the DMA
works properly.

Signed-off-by: Andy Gross <agross@codeaurora.org>
Signed-off-by: Kumar Gala <galak@codeaurora.org>
2015-03-11 15:18:39 -05:00
Lina Iyer
767b0235dd firmware: qcom: scm: Support cpu power down through SCM
Support powering down the calling cpu, by trapping into SCM. This
termination function triggers the ARM cpu to execute WFI instruction,
causing the power controller to safely power the cpu down.

Caches may be flushed before powering down the cpu. If cache controller
is set to turn off when the cpu is powered down, then the flags argument
indicates to the secure mode to flush its cache lines before executing
WFI.The warm boot reset address for the cpu should be set before the
calling into this function for the cpu to resume.

The original code for the qcom_scm_call_atomic1() comes from a patch by
Stephen Boyd [1]. The function scm_call_atomic1() has been cherry picked
and renamed to match the convention used in this file. Since there are
no users of scm_call_atomic2(), the function is not included.

[1]. https://lkml.org/lkml/2014/8/4/765

Signed-off-by: Stephen Boyd <sboyd@codeauraro.org>
Signed-off-by: Lina Iyer <lina.iyer@linaro.org>
Signed-off-by: Kumar Gala <galak@codeaurora.org>
2015-03-11 15:15:11 -05:00
Lina Iyer
2ce76a6ad3 firmware: qcom: scm: Add qcom_scm_set_warm_boot_addr function
A core can be powered down for cpuidle or when it is hotplugged off. In
either case, the warmboot return address would be different. Allow
setting the warmboot address for a specific cpu, optimize and write to
the firmware, if the address is different than the previously set
address.

Export qcom_scm_set_warm_boot_addr function move the warm boot flags to
implementation.

Signed-off-by: Lina Iyer <lina.iyer@linaro.org>
Signed-off-by: Kumar Gala <galak@codeaurora.org>
2015-03-11 15:15:07 -05:00
Lina Iyer
a353e4a06f firmware: qcom: scm: Clean cold boot entry to export only the API
We dont need to export the SCM specific cold boot flags to the platform
code. Export only a function to set the cold boot address.

Signed-off-by: Lina Iyer <lina.iyer@linaro.org>
Signed-off-by: Kumar Gala <galak@codeaurora.org>
2015-03-11 15:15:05 -05:00
Arnd Bergmann
369237ab1f Renesas ARM Based SoC r8a7778 CCF and Multiplatform Updates for v4.1
* Add CCF and them multiplatform support to r8a7778 SoC and its
   bockw board.
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Merge tag 'renesas-r8a7778-ccf-and-multiplatform-for-v4.1' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas into next/multiplatform

Pull "Renesas ARM Based SoC r8a7778 CCF and Multiplatform Updates
for v4.1" from Simon Horman:

* Add CCF and them multiplatform support to r8a7778 SoC and its
  bockw board.

* tag 'renesas-r8a7778-ccf-and-multiplatform-for-v4.1' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas: (21 commits)
  ARM: shmobile: r8a7778: enable multiplatform target
  ARM: shmobile: bockw: add sound to DT
  ARM: shmobile: r8a7778: add sound to DT
  ARM: shmobile: bockw: add devices hooked up to i2c0 to DT
  DT: i2c: add trivial binding for OKI ML86V7667 video decoder
  ARM: shmobile: r8a7778: common clock framework CPG driver
  ARM: shmobile: bockw dts: set extal clock frequency
  ARM: shmobile: bockw dts: Move Ethernet node to BSC
  ARM: shmobile: r8a7778 dtsi: Add Bus State Controller node
  ARM: shmobile: bockw: add USB, VIN pin descriptions to DT
  ARM: shmobile: r8a7778: add internal ethernet controller to DT
  ARM: shmobile: r8a7778: add MSTP clock assignments to DT
  ARM: shmobile: r8a7778: implement SoC and board CCF support
  ARM: shmobile: r8a7778: Common clock framework DT description
  ARM: shmobile: r8a7778: add CPG register bits header
  ARM: shmobile: r8a7778: synchronize dts with reference platform
  drivers: bus: Add Simple Power-Managed Bus Driver
  drivers: bus: Add Renesas Bus State Controller (BSC) DT Bindings
  drivers: bus: Add Simple Power-Managed Bus DT Bindings
  drivers: bus: Sort Makefile entries alphabetically
  ...
2015-03-11 21:14:55 +01:00
John Youn
9024c495f3 usb: dwc2: pci: Add device mode to the dwc2-pci driver
The pci driver now registers a platform driver, like in dwc3, and lets
its probe function do all the initialization. This allows it to
account for changes to the platform driver that were not added to the
pci driver. Also future changes to the probe function don't have to be
duplicated. This also has the effect of adding device and DRD mode to
the pci driver. Tested on the Synopsys HAPS PCIe platform.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
2015-03-11 15:08:17 -05:00
Kumar Gala
916f743da3 firmware: qcom: scm: Move the scm driver to drivers/firmware
Architectural changes in the ARM Linux kernel tree mandate the eventual
removal of the mach-* directories. Move the scm driver to
drivers/firmware and the scm header to include/linux to support that
removal.

Signed-off-by: Kumar Gala <galak@codeaurora.org>
2015-03-11 15:06:38 -05:00
Kumar Gala
4de43476fc ARM: qcom: Prep scm code for move to drivers/firmware
Add qcom prefix to functions, etc to create a unique name space for the
scm code as it gets ready to move out of qcom specific mach dir.

Signed-off-by: Kumar Gala <galak@codeaurora.org>
2015-03-11 15:06:37 -05:00
Kumar Gala
b97fdb6dc0 ARM: qcom: Cleanup scm interface to only export what is needed
Now that scom boot interface is merged we don't need export scm_call
anymore.  Some other minor cleanups related to boot interface to only
export what is needed by scm_set_boot_addr().

Signed-off-by: Kumar Gala <galak@codeaurora.org>
2015-03-11 15:06:37 -05:00
Kumar Gala
3d9b448bd2 ARM: qcom: Merge scm and scm boot code together
Put all scm related code into a single file as a first step in cleaning
up the scm interface to just expose functional behavior insteam of making
direct scm calls.

Signed-off-by: Kumar Gala <galak@codeaurora.org>
2015-03-11 15:06:36 -05:00
Peter Chen
005a64307d usb: gadget: lpc32xxx_udc: Fix NULL dereference
udc is then checked for NULL, if NULL, it is then dereferenced as
udc->dev, it is found using Coccinelle.

We simplify the code to fix this problem, and we delete some conditions
at if {} which will never be met.

Reported-by: Tapasweni Pathak <tapaswenipathak@gmail.com>
Reported-by : Julia Lawall <julia.lawall@lip6.fr>
Signed-off-by: Peter Chen <peter.chen@freescale.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
2015-03-11 14:59:10 -05:00
Arnd Bergmann
30fa7e0e85 Third fixes batch for AT91 on 4.0:
- clock fixes for USB
 - compatible string changes for handling USB IP differences
   (+ needed AHB matrix syscon)
 - fix of a compilation error in PM code
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Merge tag 'at91-fixes3' of git://git.kernel.org/pub/scm/linux/kernel/git/nferre/linux-at91 into fixes

Pull "Third fixes batch for AT91 on 4.0" from Nicolas Ferre:
- clock fixes for USB
- compatible string changes for handling USB IP differences
  (+ needed AHB matrix syscon)
- fix of a compilation error in PM code

* tag 'at91-fixes3' of git://git.kernel.org/pub/scm/linux/kernel/git/nferre/linux-at91:
  ARM: at91: pm_slowclock: fix the compilation error
  ARM: at91/dt: fix USB high-speed clock to select UTMI
  ARM: at91/dt: fix at91 udc compatible strings
  ARM: at91/dt: declare matrix node as a syscon device
  ARM: at91/dt: at91sam9261: fix clocks and clock-names in udc definition
2015-03-11 20:46:52 +01:00
Julia Lawall
18b44b2b95 EDAC, i82443bxgx: Don't export static symbol
The semantic patch that fixes this problem is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@r@
type T;
identifier f;
@@

static T f (...) { ... }

@@
identifier r.f;
declarer name EXPORT_SYMBOL_GPL;
@@

-EXPORT_SYMBOL_GPL(f);
// </smpl>

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Cc: Doug Thompson <dougthompson@xmission.com>
Cc: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Cc: Tim Small <tim@buttersideup.com>
Link: http://lkml.kernel.org/r/1426092997-30605-13-git-send-email-Julia.Lawall@lip6.fr
Signed-off-by: Borislav Petkov <bp@suse.de>
2015-03-11 20:39:15 +01:00
kbuild test robot
10dcc448d1 ASoC: max98925_spk_tlv can be static
Signed-off-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2015-03-11 19:16:07 +00:00
Anish Kumar
1ff2765182 ASoC: Add max98925 codec driver
Signed-off-by: Anish Kumar <yesanishhere@gmail.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2015-03-11 19:16:07 +00:00
Thomas Hellstrom
fd3e4d6e26 drm/vmwgfx: Fix an issue with the device losing its irq line on module unload
Starting with commit b4b55cda58
("x86/PCI: Refine the way to release PCI IRQ resources")

the device lost its irq resource on module unload. While that's ok and
apparently intentional, the driver never got the resource back on module load

The code apparently wants drivers to disable the pci device at pci device
driver removal, so lets do that. That fixes the issue.

Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Brian Paul <brianp@vmware.com>
2015-03-11 11:47:41 -07:00
Colin Ian King
da5efffc42 drm/vmwgfx: Correctly NULLify dma buffer pointer on failure
cppcheck on lines 917 and 977 show an ineffective assignment
to the dma buffer pointer:

[drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c:917]:
[drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c:977]:
  (warning) Assignment of function parameter has no effect
  outside the function. Did you forget dereferencing it?

On a successful DMA buffer lookup, the dma buffer pointer is
assigned, however, on failure it currently is left in an
undefined state.

The original intention in the error exit path was to nullify
the pointer on an error (which the original code failed to
do properly). This patch fixes this also ensures all failure
paths nullify the buffer pointer on the error return.

Fortunately the callers to vmw_translate_mob_ptr and
vmw_translate_guest_ptr are checking on a return status and not
on the dma buffer pointer, so the original code worked.

Reviewed-by: Thomas Hellstrom <thellstrom@vmware.com>
Signed-off-by: Colin Ian King <colin.king@canonical.com>
2015-03-11 11:47:41 -07:00
Thomas Hellstrom
3458390b9f drm/vmwgfx: Reorder device takedown somewhat
To take down the MOB and GMR memory types, the driver may have to issue
fence objects and thus make sure that the fence manager is taken down
after those memory types.
Reorder device init accordingly.

Cc: <stable@vger.kernel.org>
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Sinclair Yeh <syeh@vmware.com>
2015-03-11 11:47:40 -07:00
Thomas Hellstrom
5151adb37a drm/vmwgfx: Fix a couple of lock dependency violations
Experimental lockdep annotation added to the TTM lock has unveiled a
couple of lock dependency violations in the vmwgfx driver. In both
cases it turns out that the device_private::reservation_sem is not
needed so the offending code is moved out of that lock.

Cc: <stable@vger.kernel.org>
Acked-by: Sinclair Yeh <syeh@vmware.com>
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
2015-03-11 11:47:40 -07:00
Julia Lawall
b3f5dbec2f ASoC: ab8500-codec: don't export static symbol
The semantic patch that fixes this problem is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@r@
type T;
identifier f;
@@

static T f (...) { ... }

@@
identifier r.f;
declarer name EXPORT_SYMBOL_GPL;
@@

-EXPORT_SYMBOL_GPL(f);
// </smpl>

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Mark Brown <broonie@kernel.org>
2015-03-11 18:28:49 +00:00
Jason Gerecke
71fa641ebb HID: wacom: Add battery presence indicator to wireless tablets
Declare the POWER_SUPPLY_PROP_PRESENT property to provide userspace
with a way to determine if the battery on a wireless tablet is plugged
in. Although current wireless tablets do not explicitly report this
information, it can be inferred from other state information. In
particular, a battery is assumed to be present if any of the following
are true: a non-zero battery level reported, the battery is reported as
charging, or the tablet is operating wirelessly.

Note: The last condition above may not strictly hold for the Graphire
Wireless (it charges from a DC barrel jack instead of a USB port), but I
do not know what is reported in the no-battery condition.

Signed-off-by: Jason Gerecke <killertofu@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2015-03-11 13:50:04 -04:00
Dan Carpenter
b6310affbe Input: sx8654 - signedness bug in sx8654_irq()
"irqsrc" needs to be signed for the error handling to work.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2015-03-11 10:44:30 -07:00
Charlie Mooney
37dee1acdd Input: elants_i2c - append hw_version to FW file
Currently the elants_i2c driver simply requests a static filename
/lib/firmware/elants_i2c.bin when it gets firmware updates.  This is a
problem if you have two Elan touchscreens using the same driver.  If both
touchscreens have different firmwares, you would need to move the files
around in your filesystem when you're updating them so that they don't get
updated with the other's FW.  If you have a read-only filesystem then this
is impossible, even.

This patch changes the elants_i2c driver to automatically append the
four-hex-digit hw_version of the device onto the name of the FW file it's
requesting for update.  Since different touchscreens should have a
different hw_version's this means the user needs to append the hw version
of the touchscreen he or she intends to update onto the end of the firmware
filename and then the driver will do the rest.

The firmware filenames it looks for now are of the form:

  elants_i2c_${HW_VERSION}.bin

  eg:

  elants_i2c_2a44.bin

Signed-off-by: Charlie Mooney <charliemooney@chromium.org>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2015-03-11 10:24:18 -07:00
Simon Guinot
0c2d652f0b ARM: Kirkwood: add DT description for nas2big
This patch adds the DT description for the LaCie "2Big NAS" (nas2big).
This NAS is an hardware upgrade of the 2Big Network v2.

Chipset and device list:

- CPU Marvell 88F6282 1600Mhz
- SDRAM memory, 256MB DDR3 (2x128MB x8) 533Mhz
- 1 Ethernet Gigabit port (PHY Marvell 88E1518)
- Flash memory, NAND 256MB TSOP48
- I2C EEPROM, 512 bytes (AT24 type)
- PCIe SATA controller JMicron JMB360 (eSATA)
- I2C fan controller GMT G762 (with a separate alarm GPIO)
- 1 USB2 host port
- 1 push button
- 1 power switch
- 2 SATA LEDs (bi-color, blue and red)
- 1 power LED (bi-color, blue and red)
- CPLD for LEDs and start-up management (Altera Max EMP3064)

Signed-off-by: Simon Guinot <simon.guinot@sequanux.org>
Acked-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
2015-03-11 18:16:03 +01:00
Boris Brezillon
111573ccd8 mtd: atmel_nand: check NFC busy flag by HSMC_SR instead of NFC cmd regs
Currently the driver read NFC command registers to get NFC busy flag.
Actually this flag also can be get by reading HSMC_SR register.

Use the read NFC command registers need mapping a huge memory region.
To save the mapped memory region, we change to check NFC busy flag by
reading HSMC_SR register.

Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: Josh Wu <josh.wu@atmel.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2015-03-11 09:49:28 -07:00
Takeyoshi Kikuchi
72a472d2f9 usb: musb: cppi41: fix condition to call cppi41_trans_done().
connect AR9271(USB wifi) to AM335x, and send a flood ping from Mac OSX,
AR9271 is stopped.

on USB bus, the following occurs.

 - OUT transaction is ACKed (NYET).
 - IN transaction is ACKed (512bytes).
 - PING-NAK transaction is continued for about 2 seconds (AR9271 timeout?).

In current imprementation, IN-transaction is not completed because it
checks the empty of TX-FIFO in cppi41_dma_callback().
As a result, communication to AR9271 stops.

This patch modified to check the empty of TX-FIFO only when OUT-transaction.

Signed-off-by: Takeyoshi Kikuchi <kikuchi@centurysys.co.jp>
Signed-off-by: Felipe Balbi <balbi@ti.com>
2015-03-11 11:34:37 -05:00
Michael Ellerman
9a0b57451a selftests/exec: Check if the syscall exists and bail if not
On systems which don't implement sys_execveat(), this test produces a
lot of output.

Add a check at the beginning to see if the syscall is present, and if
not just note one error and return.

When we run on a system that doesn't implement the syscall we will get
ENOSYS back from the kernel, so change the logic that handles
__NR_execveat not being defined to also use ENOSYS rather than -ENOSYS.

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Acked-by: David Drysdale <drysdale@google.com>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2015-03-11 10:15:19 -06:00
oliver@neukum.org
a415457733 HID: add ALWAYS_POLL quirk for a Logitech 0xc007
This device disconnects every 60s without X

Signed-off-by: Oliver Neukum <oliver@neukum.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2015-03-11 12:12:37 -04:00
Jiri Kosina
8fac172214 HID: wacom: drop WACOM_PKGLEN_STATUS
The constant is not used (leftover from previous patch versions
that never got merged).

Reported-by: Ping Cheng <pingc@wacom.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2015-03-11 11:48:11 -04:00
Jason Gerecke
b0882cb79d HID: wacom: Status packet provides 'charging', not 'powered' bit
The status packet for tablets which can use a wireless module contains a
bit that is set if the battery is charging. This bit will be 0 if either
a battery is not present or if the battery has reached full charge. Note
that the charging circuit may continue to charge the battery for a short
time after reaching "100%".

Signed-off-by: Jason Gerecke <killertofu@gmail.com>
Acked-by: Ping Cheng <pingc@wacom.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2015-03-11 11:46:13 -04:00
Jason Gerecke
2d13a43813 HID: wacom: Report battery status for Intuos Pro and Intuos5
Calls the wacom_status_irq function to report battery status for the
Intuos Pro and Intuos5 (in addition to the already-reporting Intuos
and last-generation Bamboo).

Signed-off-by: Jason Gerecke <killertofu@gmail.com>
Acked-by: Ping Cheng <pingc@wacom.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2015-03-11 11:46:13 -04:00
Jason Gerecke
8f93b0b2b0 HID: wacom: Provide battery charge state to system over USB if available
If a wireless adapter (which contains the charging circuitry) is
detected as being attached to the tablet then create a new battery
interface and update its status as data is reported. Also destroy the
battery if the adapter goes away.

Signed-off-by: Jason Gerecke <killertofu@gmail.com>
Acked-by: Ping Cheng <pingc@wacom.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2015-03-11 11:46:12 -04:00
Jason Gerecke
fce9957d8f HID: wacom: Allow dynamic battery creation/destruction
Tablets like the Intuos, Intuos Pro, and Bamboo have a connector for an
optional wireless module that can be connected on the fly. The presence
(or absence) of this module is indicated in a status report recieved
from the tablet. This patch adds a workqueue function that will create
or destroy a power_supply object at runtime to match the current state
of the WACOM_QUIRK_BATTERY flag.

Signed-off-by: Jason Gerecke <killertofu@gmail.com>
Acked-by: Ping Cheng <pingc@wacom.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2015-03-11 11:46:12 -04:00
Jason Gerecke
953f2c5f71 HID: wacom: Centralize updating of wacom_wac battery status
Has the 'wacom_notify_battery' function take on the job of detecting if
updating the power supply is necessary to remove multiple
nearly-identical 'if' blocks.

Signed-off-by: Jason Gerecke <killertofu@gmail.com>
Acked-by: Ping Cheng <pingc@wacom.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2015-03-11 11:46:11 -04:00
Jason Gerecke
4ca4ec71c8 HID: wacom: Move handling of Intuos status packets to seperate function
In addition to the touchswitch state for "Intuos", these packets are
also sent by the Intuos Pro, Intuos5, and last-generation Bamboo
tablets when using a wired connection. They contain, among other
things, information about the optional wireless module and battery
charge state (to be supported in subsuquent patches).

Signed-off-by: Jason Gerecke <killertofu@gmail.com>
Acked-by: Ping Cheng <pingc@wacom.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2015-03-11 11:46:11 -04:00
Daniel Vetter
967667fd6d drm/plane-helper: Fixup mismerge
I somehow manage to screw up applying Laurent's patch in eca93e28c256:
"drm: Check in setcrtc if the primary plane supports the fb pixel
format". It was a conflict with

commit 3461b30b3e
Author: Daniel Vetter <daniel.vetter@ffwll.ch>
Date:   Thu Mar 5 10:32:44 2015 +0100

    drm/plane-helper: unexport drm_primary_helper_create_plane

and I just didn't check that the solution from wiggle made sense.

Cc: Dan Carpenter <dan.carpenter@oracle.com>
Cc: laurent.pinchart@ideasonboard.com
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: laurent.pinchart@ideasonboard.com
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
2015-03-11 16:43:40 +01:00
Peter Hurley
7fd6f640f2 serial: 8250_dw: Fix deadlock in LCR workaround
Trying to write console output from within the serial console driver
while the port->lock is held causes recursive deadlock:

  CPU 0
spin_lock_irqsave(&port->lock)
printk()
  console_unlock()
    call_console_drivers()
      serial8250_console_write()
        spin_lock_irqsave(&port->lock)
** DEADLOCK **

The 8250_dw i/o accessors try to write a console error message if the
LCR workaround was unsuccessful. When the port->lock is already held
(eg., when called from serial8250_set_termios()), this deadlocks.

Make the error message a FIXME until a general solution is devised.

Cc: Tim Kryger <tim.kryger@gmail.com>
Reported-by: Zhang Zhen <zhenzhang.zhang@huawei.com>
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-03-11 16:39:52 +01:00
Jorge Ramirez-Ortiz
48d7ff0eaa drivers/tty: serial: remove info message
Unacceptable levels of debug info will happen when the DMA driver defined in
the DT/ACPI is a blacklisted module.

Another cause for log polution would be the defer probing of the DMA driver
taking too long - in which case the message that this commit removes would be
cluttering the logs due to the init daemons activity.

Signed-off-by: Jorge Ramirez-Ortiz <jorge.ramirez-ortiz@linaro.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-03-11 16:38:25 +01:00
Fabio Estevam
168bdb88c3 usb: phy: phy-generic: No need to call gpiod_direction_output() twice
Commit 9eb0797722 ("usb: phy: generic: fix the gpios to be optional")
calls gpiod_direction_output() in the probe function, so there is no need to
call it again, as we can simply call gpiod_set_value() directly.

Also, in usb_gen_phy_shutdown() we can simply put the GPIO directly in its
active level state and this allows us to simplify the nop_reset function to
treat only the reset case.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
2015-03-11 10:19:38 -05:00
Robert Baldyga
f4e4f8dae3 usb: gadget: f_hid: remove unnecessary usb_ep_dequeue()
Function usb_ep_disable() causes completion of all requests queued
for given endpoint, so there is no need to dequeue them after endpoint
disabling.

Signed-off-by: Robert Baldyga <r.baldyga@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
2015-03-11 10:19:38 -05:00
Rasmus Villemoes
fa84acf0f6 usb: gadget: dummy-hcd: Remove utf8 from format string
Not everybody uses a utf8 locale (unfortunately), so let's avoid
non-ascii characters in the kernel log. Replace the 3-byte utf8
sequence with a 3-byte ascii equivalent.

Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: Felipe Balbi <balbi@ti.com>
2015-03-11 10:19:37 -05:00
Sylvain Rochet
112bf24471 usb: gadget: atmel_usba_udc: Add suspend/resume with wakeup support
This patch add suspend/resume with wakeup support for Atmel USBA.

On suspend: We stay continuously clocked if Vbus signal is not
available. If Vbus signal is available we set the Vbus signal as a wake
up source then we stop the USBA itself and all clocks used by USBA.

On resume: We recover clocks and USBA if we stopped them. If a device is
currently connected at resume time we enable the controller.

Signed-off-by: Sylvain Rochet <sylvain.rochet@finsecur.com>
Acked-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
2015-03-11 10:19:37 -05:00
Sylvain Rochet
a64ef71ddc usb: gadget: atmel_usba_udc: condition clocks to vbus state
If USB PLL is not necessary for other USB drivers (e.g. OHCI and EHCI)
we will reduce power consumption by switching off the USB PLL if no USB
Host is currently connected to this USB Device.

We are using Vbus GPIO signal to detect Host presence. If Vbus signal is
not available then the device stays continuously clocked.

Signed-off-by: Sylvain Rochet <sylvain.rochet@finsecur.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
2015-03-11 10:19:37 -05:00
Sylvain Rochet
bb0a203c3a usb: gadget: atmel_usba_udc: Request an auto disabled Vbus signal IRQ
Vbus IRQ handler needs a started UDC driver to work because it uses
udc->driver, which is set by the UDC start handler. The previous way
chosen was to return from interrupt if udc->driver is NULL using a
spinlock around the check.

We now request an auto disabled (IRQ_NOAUTOEN) Vbus signal IRQ instead
of an auto enabled IRQ followed by disable_irq(). This way we remove the
very small timeslot of enabled IRQ which existed previously between
request() and disable(). We don't need anymore to check if udc->driver
is NULL in IRQ handler.

Signed-off-by: Sylvain Rochet <sylvain.rochet@finsecur.com>
Suggested-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Acked-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
2015-03-11 10:19:36 -05:00
Sylvain Rochet
227ab58cff usb: gadget: atmel_usba_udc: Fixed vbus_prev initial state
If vbus gpio is high at init, we should set vbus_prev to true
accordingly to the current vbus state. Without that, we skip the first
vbus interrupt because the saved vbus state is not consistent.

Signed-off-by: Sylvain Rochet <sylvain.rochet@finsecur.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
2015-03-11 10:19:36 -05:00
Mickael Maison
656e7c36bd usb: phy: fixed comment typo
Fixed a comment typo in drivers/usb/phy/of.c

Signed-off-by: Mickael Maison <mickael.maison@gmail.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
2015-03-11 10:19:36 -05:00
Mickael Maison
2b08977b8d usb: phy: ab8500: fixed comment typo
Fixed a comment typo in drivers/usb/phy/phy-ab8500-usb.c

Signed-off-by: Mickael Maison <mickael.maison@gmail.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
2015-03-11 10:19:36 -05:00
Tal Shorer
fddc26f573 usb: gadget: f_mass_storage: use defined constant instead of numeric value
replace numeric value with TYPE_NO_LUN (defined in <scsi/scsi.h>)

Signed-off-by: Tal Shorer <tal.shorer@gmail.com>
Acked-by: Michal Nazarewicz <mina86@mina86.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
2015-03-11 10:19:35 -05:00