linux-stable.git/drivers/platform, branch v3.12.52

dell-laptop: Fix allocating & freeing SMI buffer page

2015-08-04T14:52:30+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: Jiri Slaby

ideapad: fix software rfkill setting

2015-08-04T14:52:30+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: Jiri Slaby

compal-laptop: Check return value of power_supply_register

2015-05-04T09:49:50+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: Jiri Slaby  [backport to 3.12]

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

2015-01-30T09:36:40+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.

Cc: stable@vger.kernel.org
BugLink: https://bugs.launchpad.net/bugs/1173681
Signed-off-by: Hans de Goede 
Signed-off-by: Darren Hart 
Signed-off-by: Jiri Slaby

asus-nb-wmi: Add wapf4 quirk for the X550VB

2015-01-30T09:36:35+00:00

commit 4ec7a45b51a32ee513898e2f1e42bb681b340fcf upstream.

X550VB as many others Asus laptops need wapf4 quirk to make RFKILL
switch be functional. Otherwise system boots with wireless card
disabled and is only possible to enable it by suspend/resume.

Bug report:
http://bugzilla.redhat.com/show_bug.cgi?id=1089731#c23

Reported-and-tested-by: Vratislav Podzimek 
Signed-off-by: Stanislaw Gruszka 
Signed-off-by: Darren Hart 
Signed-off-by: Jiri Slaby

asus-nb-wmi: Add wapf4 quirk for the U32U

2015-01-30T09:36:28+00:00

commit 831a444ea6f8f25fd1a9cc9d7651bc18b5a1f755 upstream.

As reported here: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1173681
the U32U needs wapf=4 too.

Signed-off-by: Hans de Goede 
Signed-off-by: Matthew Garrett 
Signed-off-by: Jiri Slaby

asus-nb-wmi.c: Rename x401u quirk to wapf4

2015-01-30T09:36:23+00:00

commit 378008dfc72baed2d9c0f0a40dababc0e8901207 upstream.

The actual x401u does not use the so named x401u quirk but the x55u quirk.
All that the x401u quirk does it setting wapf to 4, so rename it to wapf4 to
stop the confusion.

Signed-off-by: Hans de Goede 
Signed-off-by: Matthew Garrett 
Signed-off-by: Jiri Slaby

asus-nb-wmi: Add wapf4 quirk for the X550CC

2015-01-30T09:35:10+00:00

commit 6d6ded3bdb0ed6f65d1f58d5d84971f6b3a39b70 upstream.

As reported here: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1173681
the X550CC needs wapf=4 too.

Signed-off-by: Hans de Goede 
Signed-off-by: Matthew Garrett 
Signed-off-by: Jiri Slaby

asus-nb-wmi: Add wapf4 quirk for the X550CL

2015-01-30T09:35:02+00:00

commit 22ba58c8abea9e948d406776b9252024a30bd45c upstream.

As reported here: https://bugs.launchpad.net/bugs/1277959
the X550CL needs wapf=4 too.

Signed-off-by: Hans de Goede 
Signed-off-by: Matthew Garrett 
Signed-off-by: Jiri Slaby

asus-nb-wmi: Add ASUSTeK COMPUTER INC. X200CA

2015-01-30T09:34:54+00:00

commit c66263a368490a200a65639ff826f633090936a9 upstream.

BIOS won't light on the wifi-led after S3, so asus-wmi driver needs to
control the wifi and wifi-led status.
But, it'll lead to bt status error if asus-wmi driver controls bt as well.
So, for X200CA, asus-wmi driver controls wifi status only and have to set
wapf to 1.

Signed-off-by: AceLan Kao 
Signed-off-by: Matthew Garrett 
Signed-off-by: Jiri Slaby