linux-toradex.git/drivers/platform, branch v4.4.29

mfd: cros_ec: Add cros_ec_cmd_xfer_status() helper

2016-09-07T06:32:43+00:00

commit 9798ac6d32c1a32d6d92d853ff507d2d39c4300c upstream.

So that callers of cros_ec_cmd_xfer() don't have to repeat boilerplate
code when checking for errors from the EC side.

Signed-off-by: Tomeu Vizoso 
Reviewed-by: Benson Leung 
Signed-off-by: Brian Norris 
Acked-by: Lee Jones 
Tested-by: Enric Balletbo i Serra 
Signed-off-by: Thierry Reding 
Signed-off-by: Greg Kroah-Hartman

hp-wmi: Fix wifi cannot be hard-unblocked

2016-08-20T16:09:19+00:00

commit fc8a601e1175ae351f662506030f9939cb7fdbfe upstream.

Several users reported wifi cannot be unblocked as discussed in [1].
This patch removes the use of the 2009 flag by BIOS but uses the actual
WMI function calls - it will be skipped if WMI reports unsupported.

[1] https://bugzilla.kernel.org/show_bug.cgi?id=69131

Signed-off-by: Alex Hung 
Tested-by: Evgenii Shatokhin 
Signed-off-by: Darren Hart 
Signed-off-by: Greg Kroah-Hartman

platform/chrome: cros_ec_dev - double fetch bug in ioctl

2016-08-10T09:49:28+00:00

commit 096cdc6f52225835ff503f987a0d68ef770bb78e upstream.

We verify "u_cmd.outsize" and "u_cmd.insize" but we need to make sure
that those values have not changed between the two copy_from_user()
calls.  Otherwise it could lead to a buffer overflow.

Additionally, cros_ec_cmd_xfer() can set s_cmd->insize to a lower value.
We should use the new smaller value so we don't copy too much data to
the user.

Reported-by: Pengfei Wang 
Fixes: a841178445bb ('mfd: cros_ec: Use a zero-length array for command data')
Signed-off-by: Dan Carpenter 
Reviewed-by: Kees Cook 
Tested-by: Gwendal Grignou 
Signed-off-by: Olof Johansson 
Signed-off-by: Greg Kroah-Hartman

dell-rbtn: Ignore ACPI notifications if device is suspended

2016-06-01T19:15:50+00:00

commit ff8651237f39cea60dc89b2d9f25d9ede3fc82c0 upstream.

Some BIOSes unconditionally send an ACPI notification to RBTN when the
system is resuming from suspend. This makes dell-rbtn send an input
event to userspace as if a function key was pressed. Prevent this by
ignoring all the notifications received while the device is suspended.

Link: https://bugzilla.kernel.org/show_bug.cgi?id=106031
Signed-off-by: Gabriele Mazzotta 
Tested-by: Alex Hung 
Reviewed-by: Pali Rohár 
Signed-off-by: Darren Hart 
Signed-off-by: Greg Kroah-Hartman

toshiba_acpi: Fix regression caused by hotkey enabling value

2016-05-04T21:48:47+00:00

commit a30b8f81d9d6fe24eab8a023794548b048f08e3c upstream.

Commit 52cbae0127ad ("toshiba_acpi: Change default Hotkey enabling value")
changed the hotkeys enabling value, as it was the same value Windows uses,
however, it turns out that the value tells the EC that the driver will now
take care of the hardware events like the physical RFKill switch or the
pointing device toggle button.

This patch reverts such commit by changing the default hotkey enabling
value to 0x09, which enables hotkey events only, making the hardware
buttons working again.

Fixes bugs 113331 and 114941.

Signed-off-by: Azael Avalos 
Signed-off-by: Darren Hart 
Signed-off-by: Greg Kroah-Hartman

ideapad-laptop: Add ideapad Y700 (15) to the no_hw_rfkill DMI list

2016-04-12T16:09:01+00:00

commit 4db9675d927a71faa66e5ab128d2390d6329750b upstream.

Some Lenovo ideapad models lack a physical rfkill switch.
On Lenovo models ideapad Y700 Touch-15ISK and ideapad Y700-15ISK,
ideapad-laptop would wrongly report all radios as blocked by
hardware which caused wireless network connections to fail.

Add these models without an rfkill switch to the no_hw_rfkill list.

Signed-off-by: John Dahlstrom 
Cc:  # 3.17.x-: 4fa9dab: ideapad_laptop: Lenovo G50-30 fix rfkill reports wireless blocked
Signed-off-by: Darren Hart 
Signed-off-by: Greg Kroah-Hartman

ideapad-laptop: Add Lenovo Yoga 700 to no_hw_rfkill dmi list

2016-03-03T23:07:24+00:00

commit 6b31de3e698582fe0b8f7f4bab15831b73204800 upstream.

Like the Yoga 900 models the Lenovo Yoga 700 does not have a
hw rfkill switch, and trying to read the hw rfkill switch through the
ideapad module causes it to always reported blocking breaking wifi.

This commit adds the Lenovo Yoga 700 to the no_hw_rfkill dmi list, fixing
the wifi breakage.

BugLink: https://bugzilla.redhat.com/show_bug.cgi?id=1295272
Tested-by: 
Signed-off-by: Josh Boyer 
Signed-off-by: Darren Hart 
Signed-off-by: Greg Kroah-Hartman

ideapad-laptop: Add Lenovo ideapad Y700-17ISK to no_hw_rfkill dmi list

2016-03-03T23:07:23+00:00

commit edde316acb5f07c04abf09a92f59db5d2efd14e2 upstream.

One of the newest ideapad models also lacks a physical hw rfkill switch,
and trying to read the hw rfkill switch through the ideapad module
causes it to always reported blocking breaking wifi.

Fix it by adding this model to the DMI list.

BugLink: https://bugzilla.redhat.com/show_bug.cgi?id=1286293
Signed-off-by: Josh Boyer 
Signed-off-by: Darren Hart 
Signed-off-by: Greg Kroah-Hartman

toshiba_acpi: Fix blank screen at boot if transflective backlight is supported

2016-03-03T23:07:23+00:00

commit bae5336f0aaedffa115dab9cb3d8a4e4aed3a26a upstream.

If transflective backlight is supported and the brightness is zero
(lowest brightness level), the set_lcd_brightness function will activate
the transflective backlight, making the LCD appear to be turned off.

This patch fixes the issue by incrementing the brightness level, and
by doing so, avoiding the activation of the tranflective backlight.

Reported-and-tested-by: Fabian Koester 
Signed-off-by: Azael Avalos 
Signed-off-by: Darren Hart 
Signed-off-by: Greg Kroah-Hartman

intel_scu_ipcutil: underflow in scu_reg_access()

2016-02-25T20:01:23+00:00

commit b1d353ad3d5835b16724653b33c05124e1b5acf1 upstream.

"count" is controlled by the user and it can be negative.  Let's prevent
that by making it unsigned.  You have to have CAP_SYS_RAWIO to call this
function so the bug is not as serious as it could be.

Fixes: 5369c02d951a ('intel_scu_ipc: Utility driver for intel scu ipc')
Signed-off-by: Dan Carpenter 
Signed-off-by: Darren Hart 
Signed-off-by: Greg Kroah-Hartman