Commit Graph

562142 Commits

Author SHA1 Message Date
Linus Walleij
e963943609 gpio: kempld: Be sure to clamp return value
As we want gpio_chip .get() calls to be able to return negative
error codes and propagate to drivers, we need to go over all
drivers and make sure their return values are clamped to [0,1].
We do this by using the ret = !!(val) design pattern.

Cc: Brunner Michael <Michael.Brunner@kontron.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-12-26 22:28:12 +01:00
Linus Walleij
828240c27a gpio: janz-ttl: Be sure to clamp return value
As we want gpio_chip .get() calls to be able to return negative
error codes and propagate to drivers, we need to go over all
drivers and make sure their return values are clamped to [0,1].
We do this by using the ret = !!(val) design pattern.

Cc: Ira W. Snyder <iws@ovro.caltech.edu>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-12-26 22:28:10 +01:00
Linus Walleij
4c628f3de6 gpio: intel-mid: Be sure to clamp return value
As we want gpio_chip .get() calls to be able to return negative
error codes and propagate to drivers, we need to go over all
drivers and make sure their return values are clamped to [0,1].
We do this by using the ret = !!(val) design pattern.

Acked-by: David Cohen <david.a.cohen@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-12-26 22:28:09 +01:00
Linus Walleij
8388f2909c gpio: em: Be sure to clamp return value
As we want gpio_chip .get() calls to be able to return negative
error codes and propagate to drivers, we need to go over all
drivers and make sure their return values are clamped to [0,1].
We do this by using the ret = !!(val) design pattern.

Cc: Magnus Damm <damm@opensource.se>
Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-12-26 22:28:07 +01:00
Linus Walleij
5b8d8fb0fc gpio: davinci: Be sure to clamp return value
As we want gpio_chip .get() calls to be able to return negative
error codes and propagate to drivers, we need to go over all
drivers and make sure their return values are clamped to [0,1].
We do this by using the ret = !!(val) design pattern.

Cc: Sekhar Nori <nsekhar@ti.com>
Cc: Santosh Shilimkar <santosh.shilimkar@ti.com>
Reviewed-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-12-26 22:28:06 +01:00
Linus Walleij
1f66adfb5e gpio: da9052: Be sure to clamp return value
As we want gpio_chip .get() calls to be able to return negative
error codes and propagate to drivers, we need to go over all
drivers and make sure their return values are clamped to [0,1].
We do this by using the ret = !!(val) design pattern.

Cc: Ashish Jangam <ashish.jangam@kpitcummins.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-12-26 22:28:06 +01:00
Peter Rosin
50e8df09e4 gpio: sx150x: Add support for sx1502
Signed-off-by: Peter Rosin <peda@axentia.se>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-12-22 11:07:48 +01:00
William Breathitt Gray
9ae482104c gpio: 104-idi-48: Clear pending interrupt once in IRQ handler
Performing a read operation on the IRQ Status register will clear the
IRQ latch. Since a read operation on the IRQ Status register must be
performed in the IRQ handler in order to determine if the IRQ was in
fact generated by the device, the IRQ latch is consequently cleared by
the IRQ handler. A spinlock is used to guarantee that each IRQ is
serviced in the order it was received.

Signed-off-by: William Breathitt Gray <vilhelm.gray@gmail.com>
2015-12-22 10:19:49 +01:00
Robert Jarzmik
f3154a46b6 MAINTAINERS: add my-self as maintainer of gpio pxa driver
Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-12-22 10:11:02 +01:00
Robert Jarzmik
0440091be8 gpio: pxa: fixes non devicetree builds
The commit "gpio: pxa: change the interrupt management" should have
taken care of moving an ifdef to not englobe irqdomain related
structures anymore, as they are used now for all builds.

This repairs the broken builds where CONFIG_OF=n.

Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-12-22 10:09:57 +01:00
Linus Walleij
46c32889f5 pinctrl: fixup problematic flag
This removes the set_irq_flags() call that unfortunately slipped
into the BCM NSP driver.

Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Yendapally Reddy Dhananjaya Reddy <yrdreddy@broadcom.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-12-21 10:02:47 +01:00
Linus Walleij
0529357f10 Linux 4.4-rc6
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Merge tag 'v4.4-rc6' into devel

Linux 4.4-rc6
2015-12-21 09:36:21 +01:00
Linus Torvalds
4ef7675344 Linux 4.4-rc6 2015-12-20 16:06:09 -08:00
Linus Torvalds
9f7e432786 RTC fixes for 4.4 #2
A fix for a nasty hardware bug in rk808 and a initialization reordering in
 da9063 to fix a possible crash.
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Merge tag 'rtc-4.4-3' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux

Pull RTC fixes from Alexandre Belloni:
 "Late fixes for the RTC subsystem for 4.4:

  A fix for a nasty hardware bug in rk808 and an initialization
  reordering in da9063 to fix a possible crash"

* tag 'rtc-4.4-3' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux:
  rtc: da9063: fix access ordering error during RTC interrupt at system power on
  rtc: rk808: Compensate for Rockchip calendar deviation on November 31st
2015-12-20 10:01:11 -08:00
Steve Twiss
77535acedc rtc: da9063: fix access ordering error during RTC interrupt at system power on
This fix alters the ordering of the IRQ and device registrations in the RTC
driver probe function. This change will apply to the RTC driver that supports
both DA9063 and DA9062 PMICs.

A problem could occur with the existing RTC driver if:

A system is started from a cold boot using the PMIC RTC IRQ to initiate a
power on operation. For instance, if an RTC alarm is used to start a
platform from power off.
The existing driver IRQ is requested before the device has been properly
registered.
i.e.
    ret = devm_request_threaded_irq()
comes before
    rtc->rtc_dev = devm_rtc_device_register();

In this case, the interrupt can be called before the device has been
registered and the handler can be called immediately. The IRQ handler
da9063_alarm_event() contains the function call

    rtc_update_irq(rtc->rtc_dev, 1, RTC_IRQF | RTC_AF);

which in turn tries to access the unavailable rtc->rtc_dev.

The fix is to reorder the functions inside the RTC probe. The IRQ is
requested after the RTC device resource has been registered so that
get_irq_byname is the last thing to happen.

Signed-off-by: Steve Twiss <stwiss.opensource@diasemi.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2015-12-20 13:39:29 +01:00
Julius Werner
f076ef44a4 rtc: rk808: Compensate for Rockchip calendar deviation on November 31st
In A.D. 1582 Pope Gregory XIII found that the existing Julian calendar
insufficiently represented reality, and changed the rules about
calculating leap years to account for this. Similarly, in A.D. 2013
Rockchip hardware engineers found that the new Gregorian calendar still
contained flaws, and that the month of November should be counted up to
31 days instead. Unfortunately it takes a long time for calendar changes
to gain widespread adoption, and just like more than 300 years went by
before the last Protestant nation implemented Greg's proposal, we will
have to wait a while until all religions and operating system kernels
acknowledge the inherent advantages of the Rockchip system. Until then
we need to translate dates read from (and written to) Rockchip hardware
back to the Gregorian format.

This patch works by defining Jan 1st, 2016 as the arbitrary anchor date
on which Rockchip and Gregorian calendars are in sync. From that we can
translate arbitrary later dates back and forth by counting the number
of November/December transitons since the anchor date to determine the
offset between the calendars. We choose this method (rather than trying
to regularly "correct" the date stored in hardware) since it's the only
way to ensure perfect time-keeping even if the system may be shut down
for an unknown number of years. The drawback is that other software
reading the same hardware (e.g. mainboard firmware) must use the same
translation convention (including the same anchor date) to be able to
read and write correct timestamps from/to the RTC.

Signed-off-by: Julius Werner <jwerner@chromium.org>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2015-12-20 13:39:00 +01:00
Linus Torvalds
69c37a92dd TTY/Serial fixes for 4.4-rc6
Here are some tty/serial driver fixes for 4.4-rc6 that resolve some
 reported problems.  All of these have been in linux-next.  The details
 are in the shortlog.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'tty-4.4-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty

Pull tty/serial fixes from Greg KH:
 "Here are some tty/serial driver fixes for 4.4-rc6 that resolve some
  reported problems.  All of these have been in linux-next.  The details
  are in the shortlog"

* tag 'tty-4.4-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
  tty: Fix GPF in flush_to_ldisc()
  serial: earlycon: Add missing spinlock initialization
  serial: sh-sci: Fix length of scatterlist
  n_tty: Fix poll() after buffer-limited eof push read
  serial: 8250_uniphier: fix dl_read and dl_write functions
2015-12-19 17:44:19 -08:00
Linus Torvalds
24b0d5e738 USB fixes for 4.4-rc6
Here are some USB and PHY fixes for 4.4-rc6.  All of them resolve some
 reported problems.  Full details in the shortlog.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'usb-4.4-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb

Pull USB fixes from Greg KH:
 "Here are some USB and PHY fixes for 4.4-rc6.  All of them resolve some
  reported problems.  Full details in the shortlog"

* tag 'usb-4.4-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
  USB: fix invalid memory access in hub_activate()
  USB: ipaq.c: fix a timeout loop
  phy: core: Get a refcount to phy in devm_of_phy_get_by_index()
  phy: cygnus: pcie: add missing of_node_put
  phy: miphy365x: add missing of_node_put
  phy: miphy28lp: add missing of_node_put
  phy: rockchip-usb: add missing of_node_put
  phy: berlin-sata: add missing of_node_put
  phy: mt65xx-usb3: add missing of_node_put
  phy: brcmstb-sata: add missing of_node_put
  phy: sun9i-usb: add USB dependency
2015-12-19 17:33:58 -08:00
Linus Torvalds
3a87711e58 4 fixes for md in 4.4-rc5
- 2 recently introduced regressions fixed.
 - one older bug in RAID10 - tagged for -stable since 4.2
 - one minor sysfs api improvement.
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Merge tag 'md/4.4-rc5-fixes' of git://neil.brown.name/md

Pull md fixes from Neil Brown:
 "Four fixes for md:

   - two recently introduced regressions fixed.
   - one older bug in RAID10 - tagged for -stable since 4.2
   - one minor sysfs api improvement"

* tag 'md/4.4-rc5-fixes' of git://neil.brown.name/md:
  Fix remove_and_add_spares removes drive added as spare in slot_store
  md: fix bug due to nested suspend
  MD: change journal disk role to disk 0
  md/raid10: fix data corruption and crash during resync
2015-12-19 16:46:46 -08:00
Linus Torvalds
35b3154efb powerpc fixes for 4.4 #4
- Partial revert of "powerpc: Individual System V IPC system calls"
  - pr_warn_once on unsupported OPAL_MSG type from Stewart
  - Fix deadlock in opal-irqchip introduced by "Fix double endian conversion" from Alistair
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Merge tag 'powerpc-4.4-5' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux

Pull powerpc fixes from Michael Ellerman:
 - Partial revert of "powerpc: Individual System V IPC system calls"
 - pr_warn_once on unsupported OPAL_MSG type from Stewart
 - Fix deadlock in opal-irqchip introduced by "Fix double endian
   conversion" from Alistair

* tag 'powerpc-4.4-5' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
  powerpc/opal-irqchip: Fix deadlock introduced by "Fix double endian conversion"
  powerpc/powernv: pr_warn_once on unsupported OPAL_MSG type
  Partial revert of "powerpc: Individual System V IPC system calls"
2015-12-19 16:40:48 -08:00
Linus Torvalds
3c73a2dda9 spi: Fixes for v4.4
A couple of reference counting bugs here, one in spidev and one with
 holding an extra reference in the core that we never freed if we removed
 a device, plus a driver specific fix.  Both of the refcounting bugs are
 very old but they've only been found by observation so hopefully their
 impact has been low.
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Merge tag 'spi-fix-v4.4-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi

Pull spi fixes from Mark Brown:
 "A couple of reference counting bugs here, one in spidev and one with
  holding an extra reference in the core that we never freed if we
  removed a device, plus a driver specific fix.  Both of the refcounting
  bugs are very old but they've only been found by observation so
  hopefully their impact has been low"

* tag 'spi-fix-v4.4-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi:
  spi: fix parent-device reference leak
  spi: spidev: Hold spi_lock over all defererences of spi in release()
  spi-fsl-dspi: Fix CTAR Register access
2015-12-19 10:10:43 -08:00
Linus Torvalds
d525c13e9e GPIO fixes for the v4.4 series:
- Revert the error number propagation from the .get() vtable
   entry temporarily, until we make the proper fixes to all drivers.
 - Fix the clamping behaviour in the generic GPIO driver.
 - Driver fix for the ath79 driver
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Merge tag 'gpio-v4.4-3' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio

Pull GPIO fixes from Linus Walleij:
 "Some GPIO fixes for the v4.4 series.  Most prominent: I revert the
  error propagation from the .get() function until we can fix up all the
  drivers properly for v4.5.

   - Revert the error number propagation from the .get() vtable entry
     temporarily, until we make the proper fixes to all drivers.
   - Fix the clamping behaviour in the generic GPIO driver.
   - Driver fix for the ath79 driver"

* tag 'gpio-v4.4-3' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio:
  gpio: revert get() to non-errorprogating behaviour
  gpio: generic: clamp values from bgpio_get_set()
  gpio: ath79: Fix the logic to clear offset bit of AR71XX_GPIO_REG_OE register
2015-12-19 10:05:00 -08:00
Linus Torvalds
38beb96e7e Pin control fixes:
- Driver fixes for Freescale i.MX7D, Intel, Broadcom 2835
 - One MAINTAINERS entry
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Merge tag 'pinctrl-v4.4-3' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl

Pull pin control fixes from Linus Walleij:
 - Driver fixes for Freescale i.MX7D, Intel, Broadcom 2835
 - One MAINTAINERS entry

* tag 'pinctrl-v4.4-3' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl:
  MAINTAINERS: pinctrl: Add maintainers for pinctrl-single
  pinctrl: bcm2835: Fix initial value for direction_output
  pinctrl: intel: fix offset calculation issue of register PAD_OWN
  pinctrl: intel: fix bug of register offset calculation
  pinctrl: freescale: add ZERO_OFFSET_VALID flag for vf610 pinctrl
2015-12-19 10:01:03 -08:00
Linus Torvalds
d7d3d84194 Merge branch 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux
Pull i2c fixes from Wolfram Sang:
 "A set of 'usual' driver bugfixes for the I2C subsystem"

* 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
  i2c: rcar: disable runtime PM correctly in slave mode
  i2c: designware: Keep pm_runtime_enable/_disable calls in sync
  i2c: designware: fix IO timeout issue for AMD controller
  i2c: imx: init bus recovery info before adding i2c adapter
  i2c: do not use 0x in front of %pa
  i2c: davinci: Increase module clock frequency
  i2c: mv64xxx: The n clockdiv factor is 0 based on sunxi SoCs
  i2c: rk3x: populate correct variable for sda_falling_time
2015-12-19 09:52:44 -08:00
Linus Torvalds
632f8577d6 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
Pull input fixes from Dmitry Torokhov:
 "Just a few assorted driver fixes"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
  Input: elants_i2c - fix wake-on-touch
  Input: elan_i2c - set input device's vendor and product IDs
  Input: sun4i-lradc-keys - fix typo in binding documentation
  Input: atmel_mxt_ts - add maxtouch to I2C table for module autoload
  Input: arizona-haptic - fix disabling of haptics device
  Input: aiptek - fix crash on detecting device without endpoints
  Input: atmel_mxt_ts - add generic platform data for Chromebooks
  Input: parkbd - clear unused function pointers
  Input: walkera0701 - clear unused function pointers
  Input: turbografx - clear unused function pointers
  Input: gamecon - clear unused function pointers
  Input: db9 - clear unused function pointers
2015-12-19 09:51:11 -08:00
Wolfram Sang
b4cd08aa1f i2c: rcar: disable runtime PM correctly in slave mode
When we also are I2C slave, we need to disable runtime PM because the
address detection mechanism needs to be active all the time. However, we
can reenable runtime PM once the slave instance was unregistered. So,
use pm_runtime_get_sync/put to achieve this, since it has proper
refcounting. pm_runtime_allow/forbid is like a global knob controllable
from userspace which is unsuitable here.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Cc: stable@kernel.org
2015-12-19 12:00:37 +01:00
Linus Torvalds
1eab0e4245 Power management fixes for v4.4-rc6
- Fix a potential regression in the generic power domains
    framework introduced during the 4.3 development cycle that
    may lead to spurious failures of system suspend in certain
    situations (Ulf Hansson).
 
  - Fix a problem in the power capping RAPL (Running Average
    Power Limits) driver that causes it to initialize successfully
    on some systems where it is not supposed to do that which is
    due to an incorrect check in an initialization routine (Prarit
    Bhargava).
 
  - Fix a build problem in the cpufreq Tegra driver that depends
    on the regulator framework, but that dependency is not reflected
    in Kconfig (Arnd Bergmann).
 
  - Fix a recent mistake in the intel_pstate driver where a numeric
    constant is used directly instead of a symbol defined specifically
    for the case in question (Prarit Bhargava).
 
 /
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Merge tag 'pm+acpi-4.4-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull power management fixes from Rafael Wysocki:
 "These fix a potential regression introduced during the 4.3 cycle
  (generic power domains framework), a nasty bug that has been present
  forever (power capping RAPL driver), a build issue (Tegra cpufreq
  driver) and a minor ugliness introduced recently (intel_pstate).

  Specifics:

   - Fix a potential regression in the generic power domains framework
     introduced during the 4.3 development cycle that may lead to
     spurious failures of system suspend in certain situations (Ulf
     Hansson).

   - Fix a problem in the power capping RAPL (Running Average Power
     Limits) driver that causes it to initialize successfully on some
     systems where it is not supposed to do that which is due to an
     incorrect check in an initialization routine (Prarit Bhargava).

   - Fix a build problem in the cpufreq Tegra driver that depends on the
     regulator framework, but that dependency is not reflected in
     Kconfig (Arnd Bergmann).

   - Fix a recent mistake in the intel_pstate driver where a numeric
     constant is used directly instead of a symbol defined specifically
     for the case in question (Prarit Bhargava)"

* tag 'pm+acpi-4.4-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  powercap / RAPL: fix BIOS lock check
  cpufreq: intel_pstate: Minor cleanup for FRAC_BITS
  cpufreq: tegra: add regulator dependency for T124
  PM / Domains: Allow runtime PM callbacks to be re-used during system PM
2015-12-18 21:01:35 -08:00
Linus Torvalds
4fee35a3c9 SCSI fixes on 20151218
Three fixes this time, two in SES picked up by KASAN for various types of
 buffer overrun.  The first is a USB array which returns page 8 whatever is
 asked for and causes us to overrun with incorrect data format assumptions and
 the second is an invalid iteration of page 10 (the additional information
 page).  The final one is a reversion of a NULL deref fix which caused
 suspend/resume not to be called in pairs leading to incorrect device operation
 (Jens has queued a more proper fix for the problem in block).
 
 Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
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Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi

Pull SCSI fixes from James Bottomley:
 "Three fixes this time, two in SES picked up by KASAN for various types
  of buffer overrun.  The first is a USB array which returns page 8
  whatever is asked for and causes us to overrun with incorrect data
  format assumptions and the second is an invalid iteration of page 10
  (the additional information page).

  The final fix is a reversion of a NULL deref fix which caused
  suspend/resume not to be called in pairs leading to incorrect device
  operation (Jens has queued a more proper fix for the problem in
  block)"

* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
  ses: fix additional element traversal bug
  Revert "SCSI: Fix NULL pointer dereference in runtime PM"
  ses: Fix problems with simple enclosures
2015-12-18 20:35:35 -08:00
James Chen
478e5ed1c3 Input: elants_i2c - fix wake-on-touch
When sending "SLEEP" command to the controller it ceases scanning
completely and is unable to wake the system up from sleep, so if it is
configured as a wakeup source we should simply configure interrupt for
wakeup and rely on idle logic within the controller to reduce power
consumption while it is not used.

Signed-off-by: James Chen <james.chen@emc.com.tw>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2015-12-18 16:21:43 -08:00
Linus Torvalds
76b8ebdc4c media fixes for v4.4-rc6
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Merge tag 'media/v4.4-3' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media

Pull media fixes from Mauro Carvalho Chehab.

* tag 'media/v4.4-3' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media:
  [media] airspy: increase USB control message buffer size
  [media] hackrf: move RF gain ctrl enable behind module parameter
  [media] hackrf: fix possible null ptr on debug printing
  [media] Revert "[media] ivtv: avoid going past input/audio array"
2015-12-18 15:41:35 -08:00
Linus Torvalds
fc315e3e5c Merge branch 'for-linus-4.4' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs
Pull btrfs fixes from Chris Mason:
 "A couple of small fixes"

* 'for-linus-4.4' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs:
  Btrfs: check prepare_uptodate_page() error code earlier
  Btrfs: check for empty bitmap list in setup_cluster_bitmaps
  btrfs: fix misleading warning when space cache failed to load
  Btrfs: fix transaction handle leak in balance
  Btrfs: fix unprotected list move from unused_bgs to deleted_bgs list
2015-12-18 15:35:08 -08:00
Linus Torvalds
8b4414f51d Merge branch 'akpm' (patches from Andrew)
Merge misc fixes from Andrew Morton:
 "Three patches"

* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
  include/linux/mmdebug.h: should include linux/bug.h
  mm/zswap: change incorrect strncmp use to strcmp
  proc: fix -ESRCH error when writing to /proc/$pid/coredump_filter
2015-12-18 14:25:57 -08:00
James Morse
1d5cda4076 include/linux/mmdebug.h: should include linux/bug.h
mmdebug.h uses BUILD_BUG_ON_INVALID(), assuming someone else included
linux/bug.h.  Include it ourselves.

This saves build-failures such as:

  arch/arm64/include/asm/pgtable.h: In function 'set_pte_at':
  arch/arm64/include/asm/pgtable.h:281:3: error: implicit declaration of function 'BUILD_BUG_ON_INVALID' [-Werror=implicit-function-declaration]
   VM_WARN_ONCE(!pte_young(pte),

Fixes: 02602a18c3 ("bug: completely remove code generated by disabled VM_BUG_ON()")
Signed-off-by: James Morse <james.morse@arm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-12-18 14:25:40 -08:00
Dan Streetman
8bc8b228d0 mm/zswap: change incorrect strncmp use to strcmp
Change the use of strncmp in zswap_pool_find_get() to strcmp.

The use of strncmp is no longer correct, now that zswap_zpool_type is
not an array; sizeof() will return the size of a pointer, which isn't
the right length to compare.  We don't need to use strncmp anyway,
because the existing params and the passed in params are all guaranteed
to be null terminated, so strcmp should be used.

Signed-off-by: Dan Streetman <ddstreet@ieee.org>
Reported-by: Weijie Yang <weijie.yang@samsung.com>
Cc: Seth Jennings <sjennings@variantweb.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-12-18 14:25:40 -08:00
Colin Ian King
41a0c249cb proc: fix -ESRCH error when writing to /proc/$pid/coredump_filter
Writing to /proc/$pid/coredump_filter always returns -ESRCH because commit
774636e19e ("proc: convert to kstrto*()/kstrto*_from_user()") removed
the setting of ret after the get_proc_task call and incorrectly left it as
-ESRCH.  Instead, return 0 when successful.

Example breakage:

  echo 0 > /proc/self/coredump_filter
  bash: echo: write error: No such process

Fixes: 774636e19e ("proc: convert to kstrto*()/kstrto*_from_user()")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Acked-by: Kees Cook <keescook@chromium.org>
Cc: <stable@vger.kernel.org> [4.3+]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-12-18 14:25:40 -08:00
Linus Torvalds
65d70e79cd hwmon fixes for v4.4-rc6
- Select CONFIG_BITREVERSE for sht15 driver to avoid build failure
   if it is not configured.
 - Force wait for conversion time for the first valid data in tmp102
   driver to avoid reporting erroneous data to the thermal subsystem.
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Merge tag 'hwmon-for-linus-v4.4-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging

Pull hwmon fixes from Guenter Roeck:

 - Select CONFIG_BITREVERSE for sht15 driver to avoid build failure if
   it is not configured.

 - Force wait for conversion time for the first valid data in tmp102
   driver to avoid reporting erroneous data to the thermal subsystem.

* tag 'hwmon-for-linus-v4.4-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging:
  hwmon: (sht15) Select CONFIG_BITREVERSE
  hwmon: (tmp102) Force wait for conversion time for the first valid data
2015-12-18 12:51:52 -08:00
Linus Torvalds
ccdd96be43 IOMMU Fixes for Linux v4.4-rc5
* Two similar fixes for the Intel and AMD IOMMU drivers to add
 	  proper access checks before calling handle_mm_fault.
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Merge tag 'iommu-fixes-v4.4-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu

Pull IOMMU fixes from Joerg Roedel:
 "Two similar fixes for the Intel and AMD IOMMU drivers to add proper
  access checks before calling handle_mm_fault"

* tag 'iommu-fixes-v4.4-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu:
  iommu/vt-d: Do access checks before calling handle_mm_fault()
  iommu/amd: Do proper access checking before calling handle_mm_fault()
2015-12-18 12:38:35 -08:00
Linus Torvalds
3273cba195 xen: bug fixes for 4.4-rc5
- XSA-155 security fixes to backend drivers.
 - XSA-157 security fixes to pciback.
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Merge tag 'for-linus-4.4-rc5-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip

Pull xen bug fixes from David Vrabel:
 - XSA-155 security fixes to backend drivers.
 - XSA-157 security fixes to pciback.

* tag 'for-linus-4.4-rc5-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
  xen-pciback: fix up cleanup path when alloc fails
  xen/pciback: Don't allow MSI-X ops if PCI_COMMAND_MEMORY is not set.
  xen/pciback: For XEN_PCI_OP_disable_msi[|x] only disable if device has MSI(X) enabled.
  xen/pciback: Do not install an IRQ handler for MSI interrupts.
  xen/pciback: Return error on XEN_PCI_OP_enable_msix when device has MSI or MSI-X enabled
  xen/pciback: Return error on XEN_PCI_OP_enable_msi when device has MSI or MSI-X enabled
  xen/pciback: Save xen_pci_op commands before processing it
  xen-scsiback: safely copy requests
  xen-blkback: read from indirect descriptors only once
  xen-blkback: only read request operation from shared ring once
  xen-netback: use RING_COPY_REQUEST() throughout
  xen-netback: don't use last request to determine minimum Tx credit
  xen: Add RING_COPY_REQUEST()
  xen/x86/pvh: Use HVM's flush_tlb_others op
  xen: Resume PMU from non-atomic context
  xen/events/fifo: Consume unprocessed events when a CPU dies
2015-12-18 12:24:52 -08:00
Linus Torvalds
83ad283f6b ARC Fixes
- perf interrupts on SMP: Not enabled (at boot) and disabled (at runtime)
  - stack unwinder regression (for modules, ignoring dwarf3)
  - nsim hosed for non default kernel link base builds
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Merge tag 'arc-fixes-for-4.4-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc

Pull ARC architecture fixes from Vineet Gupta:
 "Fixes for:

 - perf interrupts on SMP: Not enabled (at boot) and disabled (at runtime)
 - stack unwinder regression (for modules, ignoring dwarf3)
 - nsim hosed for non default kernel link base builds"

* tag 'arc-fixes-for-4.4-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc:
  ARC: smp: Rename platform hook @init_cpu_smp -> @init_per_cpu
  ARC: rename smp operation init_irq_cpu() to init_per_cpu()
  ARC: dw2 unwind: Ignore CIE version !=1 gracefully instead of bailing
  ARC: dw2 unwind: Reinstante unwinding out of modules
  ARC: [plat-sim] unbork non default CONFIG_LINUX_LINK_BASE
  ARC: intc: Document arc_request_percpu_irq() better
  ARCv2: perf: Ensure perf intr gets enabled on all cores
  ARC: intc: No need to clear IRQ_NOAUTOEN
  ARCv2: intc: Fix random perf irq disabling in SMP setup
  ARC: [axs10x] cap ethernet phy to 100 Mbit/sec
2015-12-18 12:19:01 -08:00
Linus Torvalds
7b612255b9 sound fixes for 4.4-rc6
As usual in rc6, this update contains only a few HD-audio and
 USB-audio device-specific quirks: yet another Thinkpad noise fixes,
 Dell headphone mic fixes, and AudioQuest DragonFly fixes.
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Merge tag 'sound-4.4-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound

Pull sound fixes from Takashi Iwai:
 "As usual in rc6, this update contains only a few HD-audio and
  USB-audio device-specific quirks: yet another Thinkpad noise fixes,
  Dell headphone mic fixes, and AudioQuest DragonFly fixes"

* tag 'sound-4.4-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
  ALSA: hda - Add a fixup for Thinkpad X1 Carbon 2nd
  ALSA: hda - Set codec to D3 at reboot/shutdown on Thinkpads
  ALSA: hda - Apply click noise workaround for Thinkpads generically
  ALSA: hda - Fix headphone mic input on a few Dell ALC293 machines
  ALSA: usb-audio: Add sample rate inquiry quirk for AudioQuest DragonFly
  ALSA: usb-audio: Add a more accurate volume quirk for AudioQuest DragonFly
2015-12-18 11:47:06 -08:00
Linus Torvalds
19c52240a6 MTD update for 4.4-rc6:
A little bit of a last-minute change for the device tree "fixed partition"
 binding. This is needed because we might want to reuse the 'partitions' subnode
 for other sorts of partitioning descriptions -- e.g., for describing which
 on-flash partition format(s) might be used on the system.
 
 Also tone down a warning message, since it is probably going to show up on a
 lot of systems where it should just be ignored.
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Merge tag 'for-linus-20151217' of git://git.infradead.org/linux-mtd

Pull MTD fixes from Brian Norris:
 "I was holding out on this pull request for a bit, since there are a
  few other small issues being discussed that look like 4.4-rc
  regressions.  Hopefully I can get those stabilized soon, but these are
  ready at any rate:

   - A little bit of a last-minute change for the device tree "fixed
     partition" binding.  This is needed because we might want to reuse
     the 'partitions' subnode for other sorts of partitioning
     descriptions -- e.g., for describing which on-flash partition
     format(s) might be used on the system.

   - Also tone down a warning message, since it is probably going to
     show up on a lot of systems where it should just be ignored"

* tag 'for-linus-20151217' of git://git.infradead.org/linux-mtd:
  doc: dt: mtd: partitions: add compatible property to "partitions" node
  mtd: ofpart: don't complain about missing 'partitions' node too loudly
2015-12-18 11:19:16 -08:00
Alan Stern
e50293ef97 USB: fix invalid memory access in hub_activate()
Commit 8520f38099 ("USB: change hub initialization sleeps to
delayed_work") changed the hub_activate() routine to make part of it
run in a workqueue.  However, the commit failed to take a reference to
the usb_hub structure or to lock the hub interface while doing so.  As
a result, if a hub is plugged in and quickly unplugged before the work
routine can run, the routine will try to access memory that has been
deallocated.  Or, if the hub is unplugged while the routine is
running, the memory may be deallocated while it is in active use.

This patch fixes the problem by taking a reference to the usb_hub at
the start of hub_activate() and releasing it at the end (when the work
is finished), and by locking the hub interface while the work routine
is running.  It also adds a check at the start of the routine to see
if the hub has already been disconnected, in which nothing should be
done.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Reported-by: Alexandru Cornea <alexandru.cornea@intel.com>
Tested-by: Alexandru Cornea <alexandru.cornea@intel.com>
Fixes: 8520f38099 ("USB: change hub initialization sleeps to delayed_work")
CC: <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-12-18 09:30:34 -08:00
Dan Carpenter
abdc9a3b4b USB: ipaq.c: fix a timeout loop
The code expects the loop to end with "retries" set to zero but, because
it is a post-op, it will end set to -1.  I have fixed this by moving the
decrement inside the loop.

Fixes: 014aa2a3c3 ('USB: ipaq: minor ipaq_open() cleanup.')
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-12-18 09:30:34 -08:00
Antti Palosaari
aa0850e1d5 [media] airspy: increase USB control message buffer size
Driver requested device firmware version string during probe using
only 24 byte long buffer. That buffer is too small for newer firmware
versions, which causes device firmware hang - device stops responding
to any commands after that. Increase buffer size to 128 which should
be enough for any current and future version strings.

Link: https://github.com/airspy/host/issues/27

Cc: <stable@vger.kernel.org> # 3.17+
Reported-by: Benjamin Vernoux <bvernoux@gmail.com>
Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2015-12-18 15:25:29 -02:00
Antti Palosaari
d47fa5315c [media] hackrf: move RF gain ctrl enable behind module parameter
Used Avago MGA-81563 RF amplifier could be destroyed pretty easily
with too strong signal or transmitting to bad antenna.
Add module parameter 'enable_rf_gain_ctrl' which allows enabling
RF gain control - otherwise, default without the module parameter,
RF gain control is set to 'grabbed' state which prevents setting
value to the control.

Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2015-12-18 15:25:29 -02:00
Antti Palosaari
eb35cf47c3 [media] hackrf: fix possible null ptr on debug printing
drivers/media/usb/hackrf/hackrf.c:1533 hackrf_probe()
error: we previously assumed 'dev' could be null (see line 1366)

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2015-12-18 15:25:29 -02:00
Mauro Carvalho Chehab
dfcf36d904 [media] Revert "[media] ivtv: avoid going past input/audio array"
This patch broke ivtv logic, as reported at
 https://bugzilla.redhat.com/show_bug.cgi?id=1278942

This reverts commit 09290cc885.

Cc: stable@vger.kernel.org # for v4.1 and upper
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2015-12-18 15:25:29 -02:00
Greg Kroah-Hartman
fabb1c333e phy: for 4.4 -rc
*) Add missing of_node_put in a bunch of PHY drivers
 *) Add get_device in devm_of_phy_get_by_index()
 *) Fix randconfig build error in sun9i usb driver
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Merge tag 'phy-for-4.4-rc' of git://git.kernel.org/pub/scm/linux/kernel/git/kishon/linux-phy into usb-linus

Kishon writes:

phy: for 4.4 -rc

*) Add missing of_node_put in a bunch of PHY drivers
*) Add get_device in devm_of_phy_get_by_index()
*) Fix randconfig build error in sun9i usb driver
2015-12-18 09:24:50 -08:00
Doug Goldstein
584a561a6f xen-pciback: fix up cleanup path when alloc fails
When allocating a pciback device fails, clear the private
field. This could lead to an use-after free, however
the 'really_probe' takes care of setting
dev_set_drvdata(dev, NULL) in its failure path (which we would
exercise if the ->probe function failed), so we we
are OK. However lets be defensive as the code can change.

Going forward we should clean up the pci_set_drvdata(dev, NULL)
in the various code-base. That will be for another day.

Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Reported-by: Jonathan Creekmore <jonathan.creekmore@gmail.com>
Signed-off-by: Doug Goldstein <cardoe@cardoe.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
2015-12-18 11:38:48 -05:00
Arnd Bergmann
a3a316cfc4 hwmon: (sht15) Select CONFIG_BITREVERSE
If CONFIG_BITREVERSE is not built-in, the sht15 driver fails to link:

drivers/built-in.o: In function `sht15_crc8':
drivers/hwmon/sht15.c:195: undefined reference to `byte_rev_table'

This adds a Kconfig 'select' statement, like all other users of
bitrev.h have it.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Fixes: 33836ee985 ("hwmon:change sht15_reverse()")
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2015-12-18 08:19:52 -08:00