litmus-rt.git/drivers/platform, branch 2012.3

hp-wmi: fix use after free

2011-07-11T13:52:35+00:00

[  191.310008] WARNING: kmemcheck: Caught 32-bit read from freed memory (f0d25f14)
[  191.310011] c056d2f088000000105fd2f00000000050415353040000000000000000000000
[  191.310020]  i i i i f f f f f f f f f f f f f f f f f f f f f f f f f f f f
[  191.310027]                                          ^
[  191.310029]
[  191.310032] Pid: 737, comm: modprobe Not tainted 3.0.0-rc5+ #268 Hewlett-Packard HP Compaq 6005 Pro SFF PC/3047h
[  191.310036] EIP: 0060:[] EFLAGS: 00010286 CPU: 0
[  191.310039] EIP is at hp_wmi_perform_query+0x104/0x150 [hp_wmi]
[  191.310041] EAX: f0d25601 EBX: f0d25f00 ECX: 000121cf EDX: 000121ce
[  191.310043] ESI: f0d25f10 EDI: f0f97ea8 EBP: f0f97ec4 ESP: c173f34c
[  191.310045]  DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068
[  191.310046] CR0: 8005003b CR2: f540c000 CR3: 30f30000 CR4: 000006d0
[  191.310048] DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000
[  191.310050] DR6: ffff4ff0 DR7: 00000400
[  191.310051]  [] hp_wmi_dock_state+0x2b/0x40 [hp_wmi]
[  191.310054]  [] hp_wmi_init+0x93/0x1a8 [hp_wmi]
[  191.310057]  [] do_one_initcall+0x30/0x170
[  191.310061]  [] sys_init_module+0xef/0x1a60
[  191.310064]  [] sysenter_do_call+0x12/0x28
[  191.310067]  [] 0xffffffff

Signed-off-by: Eric Dumazet 
Signed-off-by: Matthew Garrett

dell-laptop - using buffer without mutex_lock

2011-07-11T13:52:31+00:00

Using buffer->output[1] without mutex_lock()

Signed-off-by: Jose Alonso 
Signed-off-by: Matthew Garrett

Revert: "dell-laptop: Toggle the unsupported hardware killswitch"

2011-07-11T13:52:19+00:00

This reverts commit a3d77411e8b2ad661958c1fbee65beb476ec6d70,

as it causes a mess in the wireless rfkill status on some models.
It is probably a bad idea to toggle the rfkill for all dell models
without the respect to the claim that it is hardware-controlled.

Cc: stable@kernel.org
Signed-off-by: Keng-Yu Lin 
Signed-off-by: Matthew Garrett

platform-drivers-x86: set backlight type to BACKLIGHT_PLATFORM

2011-07-07T15:27:17+00:00

Some newly added drivers do not set backlight type, as a result
/sys/class/backlight//type shows incorrect backlight type.

Signed-off-by: Axel Lin 
Cc: Corentin Chary 
Cc: Yin Kangkai 
Signed-off-by: Matthew Garrett

thinkpad-acpi: handle HKEY 0x4010, 0x4011 events

2011-07-07T14:39:05+00:00

Handle events 0x4010 and 0x4011 so that we do not pester users about them.

These events report when the thinkpad is docked/undocked to a native
hotplug dock (i.e. one that does not need ACPI handling, nor is represented
in the ACPI device tree).  Such docks are based on USB 2.0/3.0, and also
work as port replicators.

We really want a proper dock class to report these, or at least new input
EV_SW events.  Since it is not clear which one to use yet, keep reporting
them as vendor-specific ThinkPad events.

WARNING: As defined by the thinkpad-acpi sysfs ABI rules of engagement, the
vendor-specific events will be REMOVED as soon as generic events are made
available (duplicate events are a big problem), with an appropriate update
to the thinkpad-acpi sysfs/event ABI versioning.  Userspace is already
prepared to provide easy backwards compatibility for such changes when
convenient to the distro (see acpi-fakekey).

* Event 0x4010: docking to hotplug dock/port replicator
* Event 0x4011: undocking from hotplug dock/port replicator

Typical usecase would be to trigger display reconfiguration.

Reports mention T410, T510, and series 3 docks/port replicators.  Special
thanks to Robert de Rooy for his extensive report and analysis of the
situation.

http://www.thinkwiki.org/wiki/ThinkPad_Port_Replicator_Series_3
http://www.thinkwiki.org/wiki/ThinkPad_Mini_Dock_Series_3
http://www.thinkwiki.org/wiki/ThinkPad_Mini_Dock_Plus_Series_3
http://www.thinkwiki.org/wiki/ThinkPad_Mini_Dock_Plus_Series_3_for_Mobile_Workstations
http://lenovoblogs.com/insidethebox/?p=290

Signed-off-by: Henrique de Moraes Holschuh 
Cc: Matthew Garrett 
Reported-by: Claudius Hubig 
Reported-by: Doctor Bill 
Reported-by: Korte Noack 
Reported-by: Robert de Rooy 
Reported-by: Sebastian Will 
Signed-off-by: Matthew Garrett

drivers/platform/x86: Fix memory leak

2011-07-07T14:39:03+00:00

data is not freed in the error case of
compal_probe().

Signed-off-by: Andre Bartke 
Signed-off-by: Matthew Garrett

thinkpad-acpi: handle some new HKEY 0x60xx events

2011-07-07T14:39:00+00:00

Handle some user interface events from the newer Lenovo models.  We are likely
to do something smart with these events in the future, for now, hide the ones
we are already certain about from the user and userspace both.

* Events 0x6000 and 0x6005 are key-related.  0x6005 is not properly identified
  yet.  Ignore these events, and do not report them.

* Event 0x6040 has not been properly identified yet, and we don't know if it
  is important (looks like it isn't, but still...).  Keep reporting it.

* Change the message the driver outputs on unknown 0x6xxx events, as all
  recent events are not related to thermal alarms.  Degrade log level from
  ALERT to WARNING.

Thanks to all users who reported these events or asked about them in a number
of mailing lists.  Your help is highly appreciated, even if I did took a lot of
time to act on them.  For that I apologise.

I will list those that identified the reasons for the events as "reported-by",
and I apologise in advance if I leave anyone out: it was not done on purpose, I
made the mistake of not properly tagging all event report emails separately,
and might have missed some.

Signed-off-by: Henrique de Moraes Holschuh 
Reported-by: Markus Malkusch 
Reported-by: Peter Giles 
Signed-off-by: Matthew Garrett

acer-wmi: fix bitwise bug when set device state

2011-07-07T14:38:58+00:00

Fix a bitwise bug that was found by Joern Heissler, it must be OR
but not AND when we query current device state.

Acked-by: Joern Heissler 
Cc: Carlos Corbacho 
Cc: Matthew Garrett 
Cc: Dmitry Torokhov 
Cc: Corentin Chary 
Cc: Thomas Renninger 
Signed-off-by: Lee, Chun-Yi 
Signed-off-by: Matthew Garrett

acer-wmi: Only update rfkill status for associated hotkey events

2011-07-07T14:38:56+00:00

acer-wmi is indiscriminately using the device state from hotkey
events to update the various rfkill states. On the Aspire 1830 this
can result in a soft block on the wlan when the touchpad hotkey is
pressed, as it is reporting a non-zero device state that does not
reflect the wireless status. To fix this, only update rfkill states
when a wlan or bluetooth hotkey is pressed.

Signed-off-by: Seth Forshee 
Signed-off-by: Matthew Garrett

Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mjg59/platform-drivers-x86

2011-05-29T18:44:33+00:00

* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mjg59/platform-drivers-x86: (43 commits)
  acer-wmi: support integer return type from WMI methods
  msi-laptop: fix section mismatch in reference from the function load_scm_model_init
  acer-wmi: support to set communication device state by new wmid method
  acer-wmi: allow 64-bits return buffer from WMI methods
  acer-wmi: check the existence of internal 3G device when set capability
  platform/x86:delete two unused variables
  support wlan hotkey on Acer Travelmate 5735Z
  platform-x86: intel_mid_thermal: Fix memory leak
  platform/x86: Fix Makefile for intel_mid_powerbtn
  platform/x86: Simplify intel_mid_powerbtn
  acer-wmi: Delete out-of-date documentation
  acerhdf: Clean up includes
  acerhdf: Drop pointless dependency on THERMAL_HWMON
  acer-wmi: Update MAINTAINERS
  wmi: Orphan ACPI-WMI driver
  tc1100-wmi: Orphan driver
  acer-wmi: does not allow negative number set to initial device state
  platform/oaktrail: ACPI EC Extra driver for Oaktrail
  thinkpad_acpi: Convert printks to pr_
  thinkpad_acpi: Correct !CONFIG_THINKPAD_ACPI_VIDEO warning
  ...