Ignore Ambient Light Sensor notification key code 0xC6 found in ASUS UX31a.
When the illuminance changes dmesg shows:
[10814.939979] asus_wmi: Unknown key c6 pressed
Signed-off-by: NViktar Vauchkevich <victorenator@gmail.com>
Signed-off-by: NMatthew Garrett <matthew.garrett@nebula.com>

Append newline to messages.
Signed-off-by: NViktar Vauchkevich <victorenator@gmail.com>
Signed-off-by: NMatthew Garrett <matthew.garrett@nebula.com>

asus->name is null or point to const string,so it is not suitable to kfree it.
Signed-off-by: NLibo Chen <libo.chen@huawei.com>
Signed-off-by: NMatthew Garrett <matthew.garrett@nebula.com>

1. fix two visible mistakes:
    * when load_scm_model_init faild, we should call platform_device_del(msipf_device)
    * msipf_attribute_group should be remove in err case

2. change some tags, give them real meaning.
Signed-off-by: NLibo Chen <libo.chen@huawei.com>
Signed-off-by: NMatthew Garrett <matthew.garrett@nebula.com>

I forgot to add this when changing the driver to use the proper
i8042 functions.
Reported-by: Nkbuild test robot <fengguang.wu@intel.com>
Signed-off-by: NBen Hutchings <ben@decadent.org.uk>
Signed-off-by: NMatthew Garrett <matthew.garrett@nebula.com>

Fix to return -ENOMEM in the alloc_page() error handling
case instead of 0, as done elsewhere in this function.
Signed-off-by: NWei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: NMatthew Garrett <matthew.garrett@nebula.com>

Kyle Evans discovered that he needed to set some bits in an EC register in
order to receive hotkey events. Doing so blindly broke some otherwise
working HP laptops. It turns out that there's a WMI call that accesses
the same register, so let's try calling that instead.
Signed-off-by: NMatthew Garrett <matthew.garrett@nebula.com>
Cc: Kyle Evans <kvans32@gmail.com>

Calling dev_set_name with a single paramter causes it to be handled as a
format string.  Many callers are passing potentially dynamic string
content, so use "%s" in those cases to avoid any potential accidents,
including wrappers like device_create*() and bdi_register().
Signed-off-by: NKees Cook <keescook@chromium.org>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

HP wmi platform driver fails to initialize GPS and causes poweroff
failure in HP Elitebook 6930p.

Call Trace:
 [<ffffffffa088d25a>] hp_wmi_bios_setup+0x25a/0x3a0 [hp_wmi]
 [<ffffffff8135978c>] platform_drv_probe+0x3c/0x70
 [<ffffffff81356d6a>] ? driver_sysfs_add+0x7a/0xb0
 [<ffffffff81357407>] driver_probe_device+0x87/0x3a0
 [<ffffffff813577f3>] __driver_attach+0x93/0xa0
 [<ffffffff81357760>] ? __device_attach+0x40/0x40
 [<ffffffff81355403>] bus_for_each_dev+0x63/0xa0
 [<ffffffff81356e8e>] driver_attach+0x1e/0x20
 [<ffffffff81356a28>] bus_add_driver+0x1f8/0x2b0
 [<ffffffff81357e81>] driver_register+0x71/0x150
 [<ffffffff813594e6>] platform_driver_register+0x46/0x50
 [<ffffffff813595ab>] platform_driver_probe+0x1b/0xa0
 [<ffffffffa088d55e>] hp_wmi_init+0x1be/0x1fb [hp_wmi]
 [<ffffffffa088d3a0>] ? hp_wmi_bios_setup+0x3a0/0x3a0 [hp_wmi]
 [<ffffffff8100210a>] do_one_initcall+0x10a/0x160
 [<ffffffff810bdac6>] load_module+0x1b46/0x2640
 [<ffffffff8128da20>] ? ddebug_proc_write+0xf0/0xf0
 [<ffffffff810be662>] sys_init_module+0xa2/0xf0
 [<ffffffff814d975d>] system_call_fastpath+0x1a/0x1f
Code: 48 ff ff ff 80 7b 24 00 74 d2 41 83 e5 01 45 38 ec 74 c9 48 8d bb a0 03 00 00 e8 ed fb aa e0 5b 41 5c 41 5d 44 89 f0 41 5e 5d c3 <0f> 0b 66 66 66 66 66 66 2e 0f 1f 84 00 00 00 00 00 66 66 66 66
RIP  [<ffffffffa05c57af>] rfkill_set_hw_state+0x9f/0xb0 [rfkill]
 RSP <ffff880071523b60>

Check code and find this error is caused by misusing variable bluetooth_rfkill
where gps_rfkill should be.
Reported-and-tested-by: NIru Cai <mytbk920423@gmail.com>
References: https://bugzilla.kernel.org/show_bug.cgi?id=58401
Cc: All <stable@vger.kernel.org>
Signed-off-by: NLan Tianyu <tianyu.lan@intel.com>
Signed-off-by: NRafael J. Wysocki <rafael.j.wysocki@intel.com>

The patch adds support for fan control button on Ideapad Z580. This is
the same button as on Z570, but it raises different bit in
VPCCMD_R_SPECIAL_BUTTONS. Also add message to dmesg when unknown button
press detected, it will help adding support for new special buttons.
Signed-off-by: NMaxim Mikityanskiy <maxtram95@gmail.com>
Tested-by: NIvan Vojtko <nekroman.sk@gmail.com>
Signed-off-by: NMatthew Garrett <matthew.garrett@nebula.com>

pvpanic device is a qemu simulated device through which guest panic
event is sent to host.
Signed-off-by: NHu Tao <hutao@cn.fujitsu.com>
Signed-off-by: NMatthew Garrett <matthew.garrett@nebula.com>

BugLink: http://bugs.launchpad.net/bugs/1172151

Need to set wapf to 4 for ASUSTeK COMPUTER INC. X75A, so that
user can toggle wifi function through function key correctly.
Signed-off-by: NAceLan Kao <acelan.kao@canonical.com>
Signed-off-by: NMatthew Garrett <matthew.garrett@nebula.com>

Used PTR_RET function instead of IS_ERR and PTR_ERR.
Patch found using coccinelle.
Signed-off-by: NAlexandru Gheorghiu <gheorghiuandru@gmail.com>
Signed-off-by: NMatthew Garrett <matthew.garrett@nebula.com>

SVS151290S series uses handle 0x0163 for keyboard backlight and 0x015B for the graphics switch.
Signed-off-by: NArthur Wirski <awirski@gmail.com>
Signed-off-by: NMatthew Garrett <matthew.garrett@nebula.com>

New HP laptops start generating new events, and hp-wmi prints unknown
event_ids for them. This patch also removes these messages
Signed-off-by: NAlex Hung <alex.hung@canonical.com>
Signed-off-by: NMatthew Garrett <matthew.garrett@nebula.com>

If krealloc() returns NULL, it *doesn't* free the original. So any code
of the form 'foo = krealloc(foo, …);' is almost certainly a bug.
Signed-off-by: NDavid Woodhouse <David.Woodhouse@intel.com>
Signed-off-by: NMatthew Garrett <matthew.garrett@nebula.com>

The error in lis3lv02_poweron() is harmless in the resume path, so
we should ignore it. It is inline with the other usages of lis3lv02_poweron()
and matches the 3.0 code for this routine. This patch is in suse git and
might have missed making it into the mainline.
opensuse - commit id: 66ccdac87c322cf7af12bddba8c805af640b1cff
Signed-off-by: NTakashi Iwai <tiwai@suse.de>
Signed-off-by: NShuah Khan <shuah.khan@hp.com>
CC: stable@vger.kernel.org 3.8, 3.4, 3.5, 3.2
Signed-off-by: NMatthew Garrett <matthew.garrett@nebula.com>

There is a new DELL WMI spec. with new WMI event format.
I'm working on the AIO machines, but I think the new format will apply to
all the Dell's machines, not only for AIO, which will be released later
this year.

The new format of the WMI buffer is shown as below
word 0 - the number of words following in the WMI buffer(not including
        this word.
word 1 - the event type
	0x0000 - A hot key is pressed or an event occurred
	0x000F - A sequence of hot keys are pressed
word 2 and on - the event data
Signed-off-by: NAceLan Kao <acelan.kao@canonical.com>
Signed-off-by: NMatthew Garrett <matthew.garrett@nebula.com>

This reverts commit fabf85e3 which breaks
hotkey support on some other HP laptops. We'll try doing this differently
in 3.10.
Signed-off-by: NMatthew Garrett <matthew.garrett@nebula.com>

hotkey_kthread() does try_to_freeze() under hotkey_thread_mutex.

We can simply kill this mutex, hotkey_poll_stop_sync() does not need to
serialize with hotkey_kthread().  When kthread_stop() returns the thread
is already dead, it called do_exit()->complete_vfork_done().
Reported-by: NArtem Savkov <artem.savkov@gmail.com>
Reported-by: NMaciej Rutecki <maciej.rutecki@gmail.com>
Signed-off-by: NOleg Nesterov <oleg@redhat.com>
Acked-by: NHenrique de Moraes Holschuh <hmh@hmh.eng.br>
Cc: Matthew Garrett <matthew.garrett@nebula.com>
Cc: "Rafael J. Wysocki" <rjw@sisk.pl>
Reviewed-by: NMandeep Singh Baines <msb@chromium.org>
Cc: Aaron Lu <aaron.lu@intel.com>
Cc: Tejun Heo <tj@kernel.org>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

The only part of proc_dir_entry the code outside of fs/proc
really cares about is PDE(inode)->data.  Provide a helper
for that; static inline for now, eventually will be moved
to fs/proc, along with the knowledge of struct proc_dir_entry
layout.
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>

Found with a network device in QEMU/KVM guest not working anymore.

Bisected to commit c13085e5
    ACPICA: Resource Mgr: Prevent infinite loops in resource walks

That commit will check acpi_resource length strictly which causes
acpi_set_current_resources to return failure and IRQ for PCI
devices is not set properly.

Set length for all those TYPE_END_TAG acpi_resources.

[rjw: Changelog]
Bisected-by: NYinghai Lu <yinghai@kernel.org>
Signed-off-by: NYinghai Lu <yinghai@kernel.org>
Signed-off-by: NRafael J. Wysocki <rafael.j.wysocki@intel.com>

If krealloc() returns NULL, it *doesn't* free the original. So any code
of the form 'foo = krealloc(foo, …);' is almost certainly a bug.
Signed-off-by: NDavid Woodhouse <David.Woodhouse@intel.com>

Add basic platform data to get the current upstream driver working
with the 224s touchpad and 1664s touchscreen.
We will be using NULL config so we will use the settings from the
devices' NVRAMs.
Signed-off-by: NBenson Leung <bleung@chromium.org>
Tested-by: NOlof Johansson <olof@lixom.net>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Selecting BACKLIGHT_CLASS_DEVICE doesn't guarantee that any of its
dependencies are enabled, and these are complicated. Depending isn't ideal
for configuration UI purposes, but is probably more appropriate here.
Signed-off-by: NMatthew Garrett <matthew.garrett@nebula.com>

I've got a report of build failure on ideapad-laptop, which shows

drivers/built-in.o: In function `ideapad_acpi_notify':
ideapad-laptop.c:(.text+0x63876a): undefined reference to `backlight_force_update'
drivers/built-in.o: In function `ideapad_acpi_remove':
ideapad-laptop.c:(.devexit.text+0x64a7): undefined reference to `backlight_device_unregister'
drivers/built-in.o: In function `ideapad_acpi_add':
ideapad-laptop.c:(.devinit.text+0x45e28): undefined reference to `backlight_device_register'

To select backlight subsystem can prevent this error from happening.

Also update comment for this driver.
Reported-by: NFengguang Wu <fengguang.wu@intel.com>
Signed-off-by: NIke Panhc <ike.pan@canonical.com>
Signed-off-by: NMatthew Garrett <matthew.garrett@nebula.com>

Add the two other i2c buses (vga and panel) from i915.
Chromebook Pixel has input and light sensor devices on these busses.
Signed-off-by: NBenson Leung <bleung@chromium.org>
Signed-off-by: NMatthew Garrett <matthew.garrett@nebula.com>

The Chromebook Pixel uses an isl29023 ambient light sensor on the PANEL
GMBus.
Signed-off-by: NBenson Leung <bleung@chromium.org>
Signed-off-by: NMatthew Garrett <matthew.garrett@nebula.com>

This will allow us to assign devices to buses by the type enum.
Signed-off-by: NBenson Leung <bleung@chromium.org>
Signed-off-by: NMatthew Garrett <matthew.garrett@nebula.com>

Instantiate the atmel mxt1664s touchscreen on this system.
The touchscreen may appear at two possible addresses:
0x4a in operational mode.
0x26 in bootloader mode.
Signed-off-by: NYufeng Shen <miletus@chromium.org>
Signed-off-by: NBenson Leung <bleung@chromium.org>
Signed-off-by: NMatthew Garrett <matthew.garrett@nebula.com>

This will allow support for devices that may appear at more than
one i2c address at boot time. The specific example is the atmel_mxt touch
devices, which may appear at a different address if it comes up
in bootloader mode.
Signed-off-by: NBenson Leung <bleung@chromium.org>
Signed-off-by: NMatthew Garrett <matthew.garrett@nebula.com>

Instantiate the atmel mxt224s trackpad on this system.
The trackpad may appear at two possible addresses:
0x4b in operational mode.
0x25 in bootloader mode.
Signed-off-by: NBenson Leung <bleung@chromium.org>
Signed-off-by: NMatthew Garrett <matthew.garrett@nebula.com>

The driver will not quite work if someone unbinds the platform device
from the platform driver via sysfs (moreover it will bomb is the driver
built into the kernel as hp_wmi_bios_remove is marked as __exit and will
not be present in the kernel).

To fix it let's use platform_driver_probe() instead of
platform_driver_register(), which disables binding/unbinding via sysfs.
This also allows us to mark hp_wmi_bios_setup as __init and discard it
once module is initialized.
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: NMatthew Garrett <matthew.garrett@nebula.com>

We need to decrement "i" first because the current "i" was not allocated
succesfully.  Also we should go free the way down to zero to avoid a
leak.
Signed-off-by: NDan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: NMatthew Garrett <matthew.garrett@nebula.com>

Several models of HP laptops using the same DSDT have hotkey buttons
that do not work until the EC is configured to enable them.
Signed-off-by: NKyle Evans <kvans32@gmail.com>
Signed-off-by: NMatthew Garrett <matthew.garrett@nebula.com>

Fix the following build warning

CC [M]  drivers/platform/x86/asus-wmi.o
drivers/platform/x86/asus-wmi.c:1356:13: warning: ‘do_nothing’ defined but not used [-Wunused-function]
Signed-off-by: NShuah Khan <shuah.khan@hp.com>
Signed-off-by: NMatthew Garrett <matthew.garrett@nebula.com>

Fengguang Wu run kernel build test to platform-drivers-x86/linux-next git tree
on x86_64 architecture and found a warning that was introduced by
727651bf738b6b917335025d09323d0962eda114 commit:

drivers/platform/x86/acer-wmi.c: In function ‘WMID_set_capabilities’:
drivers/platform/x86/acer-wmi.c:1211: warning: ‘devices’ may be used
uninitialized in this function

This patch fixes the above warning message.

Cc: Carlos Corbacho <carlos@strangeworlds.co.uk>
Cc: Matthew Garrett <mjg@redhat.com>
Cc: Dmitry Torokhov <dtor@mail.ru>
Cc: Corentin Chary <corentincj@iksaif.net>
Cc: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: NLee, Chun-Yi <jlee@suse.com>
Signed-off-by: NMatthew Garrett <matthew.garrett@nebula.com>

Handle HKEY event generated on AC power change. The current message
asks users to submit data related to this event which leads to
a lot of confusion and noise on the mailing list.

The following is a list affected models and 'Message-Id'
from ibm-acpi-devel@lists.sourceforge.net of people who saw this
event when either plugging or unplugging the AC adapter or
docking or undocking their laptop.

X120e - CAAAujb5v9dHdbdxDVvhNJoG4UrZC1TgKqeB_zGpAy7q8kZHMEQ@mail.gmail.com
X121e - 20120817143459.GB3462@x1.osrc.amd.com
X220  - Confirmed by Richard Hartmann
X220i - 4F406274.7070807@gmail.com
X220t - 4F489F5B.9040705@cs.tu-berlin.de
X230  - CAKx4u7kqvVH0-gstomsiVYdGC0i6=bGxzaQ8sq9gbg76TGme3w@mail.gmail.com
T420  - 9c848ee30b006737d0534d906bab0cf6@niklaas-baudet.net
T420s - 20120608080824.GS25324@hexapodia.org
W520  - 20121008181050.GF2549@ericlaptop.home.christensenplace.us
Signed-off-by: NRichard Hartmann <richih.mailinglist@gmail.com>
Signed-off-by: NMatthew Garrett <matthew.garrett@nebula.com>

Add support for the HP Pavilion 14 Chromebook's trackpad, which is a reuse
of the Samsung Series 5 550 trackpad.
Signed-off-by: NBenson Leung <bleung@chromium.org>
Signed-off-by: NMatthew Garrett <matthew.garrett@nebula.com>

The Samsung Series 5 Chromebook is equipped with  a Taos tsl2583
light sensor. Instatiate it here.
Signed-off-by: NBenson Leung <bleung@chromium.org>
Signed-off-by: NMatthew Garrett <matthew.garrett@nebula.com>