linux-toradex.git/drivers/platform, branch v3.14.57

dell-laptop: Fix allocating & freeing SMI buffer page

2015-08-03T16:29:58+00:00

commit b8830a4e71b15d0364ac8e6c55301eea73f211da upstream.

This commit fix kernel crash when probing for rfkill devices in dell-laptop
driver failed. Function free_page() was incorrectly used on struct page *
instead of virtual address of SMI buffer.

This commit also simplify allocating page for SMI buffer by using
__get_free_page() function instead of sequential call of functions
alloc_page() and page_address().

Signed-off-by: Pali Rohár 
Acked-by: Michal Hocko 
Signed-off-by: Darren Hart 
Signed-off-by: Greg Kroah-Hartman

ideapad: fix software rfkill setting

2015-08-03T16:29:58+00:00

commit 4b200b4604bec3388426159f1656109d19fadf6e upstream.

This fixes a several year old regression that I found while trying
to get the Yoga 3 11 to work. The ideapad_rfk_set function is meant
to send a command to the embedded controller through ACPI, but
as of c1f73658ed, it sends the index of the rfkill device instead
of the command, and ignores the opcode field.

This changes it back to the original behavior, which indeed
flips the rfkill state as seen in the debugfs interface.

Signed-off-by: Arnd Bergmann 
Fixes: c1f73658ed ("ideapad: pass ideapad_priv as argument (part 2)")
Signed-off-by: Darren Hart 
Signed-off-by: Greg Kroah-Hartman

compal-laptop: Fix leaking hwmon device

2015-05-13T12:17:00+00:00

commit ad774702f1705c04e5fa492b793d8d477a504fa6 upstream.

The commit c2be45f09bb0 ("compal-laptop: Use
devm_hwmon_device_register_with_groups") wanted to change the
registering of hwmon device to resource-managed version. It mostly did
it except the main thing - it forgot to use devm-like function so the
hwmon device leaked after device removal or probe failure.

Signed-off-by: Krzysztof Kozlowski 
Fixes: c2be45f09bb0 ("compal-laptop: Use devm_hwmon_device_register_with_groups")
Acked-by: Guenter Roeck 
Acked-by: Darren Hart 
Signed-off-by: Sebastian Reichel 
Signed-off-by: Greg Kroah-Hartman

compal-laptop: Check return value of power_supply_register

2015-05-06T19:59:10+00:00

commit 1915a718b1872edffcb13e5436a9f7302d3d36f0 upstream.

The return value of power_supply_register() call was not checked and
even on error probe() function returned 0. If registering failed then
during unbind the driver tried to unregister power supply which was not
actually registered.

This could lead to memory corruption because power_supply_unregister()
unconditionally cleans up given power supply.

Fix this by checking return status of power_supply_register() call. In
case of failure, clean up sysfs entries and fail the probe.

Signed-off-by: Krzysztof Kozlowski 
Fixes: 9be0fcb5ed46 ("compal-laptop: add JHL90, battery & hwmon interface")
Signed-off-by: Sebastian Reichel 
Signed-off-by: Greg Kroah-Hartman

hp_accel: Add support for HP ZBook 15

2015-01-27T16:18:55+00:00

commit 6583659e0f92e38079a8dd081e0a1181a0f37747 upstream.

HP ZBook 15 laptop needs a non-standard mapping (x_inverted).

BugLink: http://bugzilla.opensuse.org/show_bug.cgi?id=905329
Signed-off-by: Dominique Leuenberger 
Signed-off-by: Takashi Iwai 
Signed-off-by: Darren Hart 
Signed-off-by: Greg Kroah-Hartman

dell-wmi: Fix access out of memory

2014-11-21T17:23:05+00:00

commit a666b6ffbc9b6705a3ced704f52c3fe9ea8bf959 upstream.

Without this patch, dell-wmi is trying to access elements of dynamically
allocated array without checking the array size. This can lead to memory
corruption or a kernel panic. This patch adds the missing checks for
array size.

Signed-off-by: Pali Rohár 
Signed-off-by: Darren Hart 
Signed-off-by: Greg Kroah-Hartman

acer-wmi: Add acpi_backlight=video quirk for the Acer KAV80

2014-11-14T17:00:12+00:00

commit 183fd8fcd7f8afb7ac5ec68f83194872f9fecc84 upstream.

The acpi-video backlight interface on the Acer KAV80 is broken, and worse
it causes the entire machine to slow down significantly after a suspend/resume.

Blacklist it, and use the acer-wmi backlight interface instead. Note that
the KAV80 is somewhat unique in that it is the only Acer model where we
fall back to acer-wmi after blacklisting, rather then using the native
(e.g. intel) backlight driver. This is done because there is no native
backlight interface on this model.

BugLink: https://bugzilla.redhat.com/show_bug.cgi?id=1128309
Signed-off-by: Hans de Goede 
Signed-off-by: Darren Hart 
Signed-off-by: Greg Kroah-Hartman

thinkpad_acpi: Fix inconsistent mute LED after resume

2014-05-13T11:32:56+00:00

commit 119f449866ad18785b0445adaf0d2859c6dbdaa3 upstream.

The mute LED states have to be restored after resume.

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=70351
Signed-off-by: Takashi Iwai 
Signed-off-by: Matthew Garrett 
Signed-off-by: Greg Kroah-Hartman

Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/olof/chrome-platform

2014-01-30T04:06:01+00:00

Pull chrome platform cleanups and improvements from Olof Johansson:
 - Use deferred probing on Chrome OS platforms for the i2c device
   registration.  This fixes a long-standing race of initialization of
   touchpad/screen on Chromebooks.
 - Added in platform device registration for pstore console on supported
   hardware
 - Misc smaller fixes (__initdata, module exit cleanup, etc)

* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/olof/chrome-platform:
  platform/chrome: unregister platform driver/device when module exit
  platform/chrome: Make i2c_adapter_names static
  platform/chrome: chromeos_laptop - fix incorrect placement of __initdata tag
  platform/chrome: chromeos_laptop - Use deferred probing
  platform/chrome: chromeos_laptop - Restructure device associations
  platform/chrome: Add pstore platform_device

Merge branch 'for_linus' of git://cavan.codon.org.uk/platform-drivers-x86

2014-01-30T02:54:05+00:00

Pull x86 platform drivers update from Matthew Garrett:
 "Nothing amazingly special here.  Some cleanups, a new driver to
  support a single button on some new HPs, a tiny amount of hardware
  enablement"

* 'for_linus' of git://cavan.codon.org.uk/platform-drivers-x86:
  ipc: add intel-mid's pci id macros
  hp-wireless: new driver for hp wireless button for Windows 8
  toshiba_acpi: Support RFKILL hotkey scancode
  hp_accel: Add a new PnP ID HPQ6007 for new HP laptops
  sony-laptop: remove unnecessary assigment of len
  fujitsu-laptop: fix error return code
  dell-laptop: Only install the i8042 filter when rfkill is active
  X86 platform: New BayTrail IOSF-SB MBI driver
  drivers: platform: Include appropriate header file in mxm-wmi.c
  drivers: platform: Mark functions as static in hp_accel.c
  dell-laptop: rkill whitelist Precision models
  ipc: simplify platform data approach
  asus-wmi: Convert to use devm_hwmon_device_register_with_groups
  compal-laptop: Use devm_hwmon_device_register_with_groups
  compal-laptop: Replace SENSOR_DEVICE_ATTR with DEVICE_ATTR
  eeepc-laptop: Convert to use devm_hwmon_device_register_with_groups
  compal-laptop: Use devm_kzalloc to allocate local data structure
  dell-laptop: fix to return error code in dell_send_intensity()