linux-stable.git/drivers/platform, branch v3.18.26

hp-wmi: limit hotkey enable

2015-10-28T02:12:47+00:00

[ Upstream commit 8a1513b49321e503fd6c8b6793e3b1f9a8a3285b ]

Do not write initialize magic on systems that do not have
feature query 0xb. Fixes Bug #82451.

Redefine FEATURE_QUERY to align with 0xb and FEATURE2 with 0xd
for code clearity.

Add a new test function, hp_wmi_bios_2008_later() & simplify
hp_wmi_bios_2009_later(), which fixes a bug in cases where
an improper value is returned. Probably also fixes Bug #69131.

Add missing __init tag.

Signed-off-by: Kyle Evans 
Cc: stable@vger.kernel.org
Signed-off-by: Darren Hart 
Signed-off-by: Sasha Levin

dell-laptop: Fix allocating & freeing SMI buffer page

2015-08-04T18:38:19+00:00

[ Upstream commit b8830a4e71b15d0364ac8e6c55301eea73f211da ]

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 
Cc: stable@vger.kernel.org
Signed-off-by: Darren Hart 
Signed-off-by: Sasha Levin

ideapad: fix software rfkill setting

2015-07-04T03:02:30+00:00

[ Upstream commit 4b200b4604bec3388426159f1656109d19fadf6e ]

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)")
Cc: stable@vger.kernel.org # v2.6.38+
Signed-off-by: Darren Hart 
Signed-off-by: Sasha Levin

ideapad_laptop: Lenovo G50-30 fix rfkill reports wireless blocked

2015-07-04T03:02:22+00:00

[ Upstream commit 4fa9dabcffc8e16601307d3d56b58c68d9716ba4 ]

Lenovo G30-50 does not have a hardware wireless switch and wireless
is always blocked.

BugLink: https://bugs.launchpad.net/bugs/1397021
Signed-off-by: Dmitry Tunin 
Cc: stable@vger.kernel.org
Signed-off-by: Philippe Coval 
[dvhart@linux.intel.com: Reordered dmi id per Phillippe's later version]
Signed-off-by: Darren Hart 

Signed-off-by: Sasha Levin

compal-laptop: Check return value of power_supply_register

2015-05-17T23:11:55+00:00

[ Upstream commit 1915a718b1872edffcb13e5436a9f7302d3d36f0 ]

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")
Cc: 
Signed-off-by: Sebastian Reichel 
Signed-off-by: Sasha Levin

compal-laptop: Fix leaking hwmon device

2015-05-17T23:11:54+00:00

[ Upstream commit ad774702f1705c04e5fa492b793d8d477a504fa6 ]

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")
Cc: 
Acked-by: Guenter Roeck 
Acked-by: Darren Hart 
Signed-off-by: Sebastian Reichel 
Signed-off-by: Sasha Levin

samsung-laptop: Add use_native_backlight quirk, and enable it on some models

2015-03-06T22:53:05+00:00

commit 4690555e13c48fef07f2762f6b0cd6b181e326d0 upstream.

Since kernel 3.14 the backlight control has been broken on various Samsung
Atom based netbooks. This has been bisected and this problem happens since
commit b35684b8fa94 ("drm/i915: do full backlight setup at enable time")

This has been reported and discussed in detail here:
http://lists.freedesktop.org/archives/intel-gfx/2014-July/049395.html

Unfortunately no-one has been able to fix this. This only affects Samsung
Atom netbooks, and the Linux kernel and the BIOS of those laptops have never
worked well together. All affected laptops already have a quirk to avoid using
the standard acpi-video interface and instead use the samsung specific SABI
interface which samsung-laptop uses. It seems that recent fixes to the i915
driver have also broken backlight control through the SABI interface.

The intel_backlight driver OTOH works fine, and also allows for finer grained
backlight control. So add a new use_native_backlight quirk, and replace the
broken_acpi_video quirk with this quirk for affected models. This new quirk
disables acpi-video as before and also stops samsung-laptop from registering
the SABI based samsung_laptop backlight interface, leaving only the working
intel_backlight interface.

This commit enables this new quirk for 3 models which are known to be affected,
chances are that it needs to be used on other models too.

BugLink: https://bugzilla.redhat.com/show_bug.cgi?id=1094948 # N145P
BugLink: https://bugzilla.redhat.com/show_bug.cgi?id=1115713 # N250P
Reported-by: Bertrik Sikken  # N150P
Cc: stable@vger.kernel.org # 3.16
Signed-off-by: Hans de Goede 
Signed-off-by: Darren Hart 
Signed-off-by: Greg Kroah-Hartman

hp_accel: Add support for HP ZBook 15

2015-01-27T16:29:36+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

asus-nb-wmi: Add another wapf=4 quirk

2015-01-27T16:29:36+00:00

commit 841e11ccdf90c29a7778a5d5d553bc716c3d477a upstream.

Wifi on this laptop does not work unless asus-nb-wmi.wapf=4 is specified on
the kerne commandline, add a quirk for this.

BugLink: https://bugs.launchpad.net/bugs/1173681
Signed-off-by: Hans de Goede 
Signed-off-by: Darren Hart 
Signed-off-by: Greg Kroah-Hartman

platform: hp_accel: Add SERIO_I8042 as a dependency since it now includes i8042.h/serio.h

2014-11-11T05:16:15+00:00

Make hp_accel dependent on SERIO_I8042 in the Kconfig because since commit
a4c724d0723b078e4ab4670e557cda1795036a7a ('platform: hp_accel: add a i8042
filter to remove HPQ6000 data from kb bus stream') hp_accel includes i8042.h
and serio.h.

Reported-by: Jim Davis 
Signed-off-by: Giedrius Statkevičius 
Signed-off-by: Darren Hart