Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>

The Satellite C670-10V generates notifications for hotkeys but does
not support HCI_SYSTEM_EVENT. As a result when a hotkey is pressed
it gets stuck in an infinite loop in toshiba_acpi_notify. To fix
this, detect whether or not HCI_SYSTEM_EVENT is supported up-front
and don't try to read system events if it isn't supported. In
addition, limit the number of retries when reading HCI_SYSTEM_EVENT
fails so that this loop cannot run unbounded.
Signed-off-by: NSeth Forshee <seth.forshee@canonical.com>
Signed-off-by: NMatthew Garrett <mjg@redhat.com>

Fix build warnings:
  drivers/platform/x86/dell-laptop.c:592:13: warning: function declaration isn't a prototype
  drivers/platform/x86/dell-laptop.c:599:13: warning: function declaration isn't a prototype
Signed-off-by: NRandy Dunlap <rdunlap@xenotime.net>
Cc: Matthew Garrett <mjg@redhat.com>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

The Kconfig loop detection goes crazy without this.
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Otherwise we get compile errors like this:

  ERROR: "led_classdev_unregister" [drivers/platform/x86/dell-laptop.ko] undefined!
  ERROR: "led_classdev_register" [drivers/platform/x86/dell-laptop.ko] undefined!
  make[1]: *** [__modpost] Error 1
  make: *** [modules] Error 2

when the dell-laptop support is enabled without the necessary LED
support being enabled.
Reported-by: NAlessandro Suardi <alessandro.suardi@gmail.com>
Acked-by: NMatthew Garrett <mjg59@srcf.ucam.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Change exported functions to use the device given as parameter
instead of the global one.
Signed-off-by: NIlkka Koskinen <ilkka.koskinen@nokia.com>
Signed-off-by: NÉric Piel <eric.piel@tremplin-utc.net>
Cc: Matthew Garrett <mjg@redhat.com>
Cc: Witold Pilat <witold.pilat@gmail.com>
Cc: Lyall Pearce <lyall.pearce@hp.com>
Cc: Malte Starostik <m-starostik@versanet.de>
Cc: Thadeu Lima de Souza Cascardo <cascardo@holoscopio.com>
Cc: Christian Lamparter <chunkeey@googlemail.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Add axis correction for HP ProBook 6555b.
Signed-off-by: NMalte Starostik <m-starostik@versanet.de>
Signed-off-by: NÉric Piel <eric.piel@tremplin-utc.net>
Cc: Matthew Garrett <mjg@redhat.com>
Cc: Witold Pilat <witold.pilat@gmail.com>
Cc: Lyall Pearce <lyall.pearce@hp.com>
Cc: Ilkka Koskinen <ilkka.koskinen@nokia.com>
Cc: Thadeu Lima de Souza Cascardo <cascardo@holoscopio.com>
Cc: Christian Lamparter <chunkeey@googlemail.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Add axis correction for HP EliteBook 8540w.
Reported-by: NLyall Pearce <lyall.pearce@hp.com>
Signed-off-by: NÉric Piel <eric.piel@tremplin-utc.net>
Cc: Matthew Garrett <mjg@redhat.com>
Cc: Witold Pilat <witold.pilat@gmail.com>
Cc: Malte Starostik <m-starostik@versanet.de>
Cc: Ilkka Koskinen <ilkka.koskinen@nokia.com>
Cc: Thadeu Lima de Souza Cascardo <cascardo@holoscopio.com>
Cc: Christian Lamparter <chunkeey@googlemail.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Add axis correction for HP EliteBook 2730p.
Tested-by: NWitold Pilat <witold.pilat@gmail.com>
Signed-off-by: NÉric Piel <eric.piel@tremplin-utc.net>
Cc: Matthew Garrett <mjg@redhat.com>
Cc: Lyall Pearce <lyall.pearce@hp.com>
Cc: Malte Starostik <m-starostik@versanet.de>
Cc: Ilkka Koskinen <ilkka.koskinen@nokia.com>
Cc: Thadeu Lima de Souza Cascardo <cascardo@holoscopio.com>
Cc: Christian Lamparter <chunkeey@googlemail.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

After an "unexpected" reboot, I found this Oops in my logs:

divide error: 0000 [#1] PREEMPT SMP=20
CPU 0=20
Modules linked in: lis3lv02d hp_wmi input_polldev [...]
Pid: 390, comm: modprobe Tainted: G         C  2.6.39-rc7-wl+=20
RIP: 0010:[<ffffffffa014b427>]  [<ffffffffa014b427>]
		 lis3lv02d_poweron+0x4e/0x94 [lis3lv02d]
RSP: 0018:ffff8801d6407cf8  EFLAGS: 00010246
RAX: 0000000000000bb8 RBX: ffffffffa014e000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffea00066e4708 RDI: ffff8801df002700
RBP: ffff8801d6407d18 R08: ffffea00066c5a30 R09: ffffffff812498c9
R10: ffff8801d7bfcea0 R11: ffff8801d7bfce10 R12: 0000000000000bb8
R13: 00000000ffffffda R14: ffffffffa0154120 R15: ffffffffa0154030
=46S:  00007fc0705db700(0000) GS:ffff8801dfa00000(0000) knlGS:0
CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
CR2: 00007f33549174f0 CR3: 00000001d65c9000 CR4: 00000000000406f0
Process modprobe (pid: 390, threadinfo ffff8801d6406000, task ffff8801d6b40=
000)
Stack:
 ffffffffa0154120 62ffffffa0154030 ffffffffa014e000 00000000ffffffea
 ffff8801d6407d58 ffffffffa014bcc1 0000000000000000 0000000000000048
 ffff8801d8bae800 00000000ffffffea 00000000ffffffda ffffffffa0154120
Call Trace:
 [<ffffffffa014bcc1>] lis3lv02d_init_device+0x1ce/0x496 [lis3lv02d]
 [<ffffffffa01522ff>] lis3lv02d_add+0x10f/0x17c [hp_accel]
 [<ffffffff81233e11>] acpi_device_probe+0x49/0x117
[...]
Code: 3a 75 06 80 4d ef 50 eb 04 80 4d ef 40 0f b6 55 ef be 21
00 00 00 48 89 df ff 53 18 44 8b 63 6c e8 3e fc ff ff 89 c1 44
89 e0 99 <f7> f9 89 c7 e8 93 82 ef e0 48 83 7b 30 00 74 2d 45
31 e4 80 7b=20
RIP  [<ffffffffa014b427>] lis3lv02d_poweron+0x4e/0x94 [lis3lv02d]
 RSP <ffff8801d6407cf8>

>From my POV, it looks like the hardware is not working as expected
and returns a bogus data rate. The driver doesn't check the result
and directly uses it as some sort of divisor in some places:

msleep(lis3->pwron_delay / lis3lv02d_get_odr());

Under this circumstances, this could very well cause the
"divide by zero" exception from above.

For now, I fixed it the easiest and most obvious way:
Check if the result is sane and if it isn't use a sane default
instead. I went for "100" in the latter case, simply because
/sys/devices/platform/lis3lv02d/rate returns it on a successful
boot.
Signed-off-by: NChristian Lamparter <chunkeey@googlemail.com>
Signed-off-by: NÉric Piel <eric.piel@tremplin-utc.net>
Cc: Matthew Garrett <mjg@redhat.com>
Cc: Witold Pilat <witold.pilat@gmail.com>
Cc: Lyall Pearce <lyall.pearce@hp.com>
Cc: Malte Starostik <m-starostik@versanet.de>
Cc: Ilkka Koskinen <ilkka.koskinen@nokia.com>
Cc: Thadeu Lima de Souza Cascardo <cascardo@holoscopio.com>
Cc: Christian Lamparter <chunkeey@googlemail.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

These files aren't just exporting symbols -- they are also defining
a MODULE_LICENSE etc. so give them the full module.h file.
Signed-off-by: NPaul Gortmaker <paul.gortmaker@windriver.com>

Before set communication devices state, we need query out all devices state to set
the states bitmap. That will be better use the devices bitmap in SMBIOS type Aah
instead of hardcode in driver.

Tested on Acer Travelmate 8572.

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: Thomas Renninger <trenn@suse.de>
Signed-off-by: NLee, Chun-Yi <jlee@suse.com>
Signed-off-by: NMatthew Garrett <mjg@redhat.com>

That will be better to check the existence of internal wireless device
when we set wireless capability and generate killswitch for it. It can
avoid userland access wireless rfkill but the machine doesn't have internal
wireless device.

Tested on Acer Travelmate 8572

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: Thomas Renninger <trenn@suse.de>
Signed-off-by: NLee, Chun-Yi <jlee@suse.com>
Signed-off-by: NMatthew Garrett <mjg@redhat.com>

There have new acer notebooks' BIOS provide new WMID_GUID3 and
ACERWMID_EVENT_GUID methods.

Some of machines still keep the old WMID_GUID1 method but more and
more machines were already removed old wmi methods from DSDT.

So, this patch add a new ACER_WMID_v2 interface flag to represent
new acer notebooks, the following is definition:

 + ACER_WMID:
        It means this machine only provides WMID_GUID1/2 methods.

 + ACER_WMID_v2:
        It means this machine provide new WMID_GUID3 and WMID_EVENT_GUID
        methods.
        Some ACER_WMID_v2 machines also provide old WMID_GUID1/2 methods,
        but we still query/set communication device's state by new
        WMID_GUID3 method.

Tested on Acer Travelmate 8572
Tested on Acer Aspire 4739Z
Tested-by: NAceLan Kao <acelan.kao@canonical.com>
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: Thomas Renninger <trenn@suse.de>
Signed-off-by: NLee, Chun-Yi <jlee@suse.com>
Signed-off-by: NMatthew Garrett <mjg@redhat.com>

Since commit [e58aa3d2: genirq: Run irq handlers with interrupts disabled],
We run all interrupt handlers with interrupts disabled
and we even check and yell when an interrupt handler
returns with interrupts enabled (see commit [b738a50a:
genirq: Warn when handler enables interrupts]).

So now this flag is a NOOP and can be removed.
Signed-off-by: NYong Zhang <yong.zhang0@gmail.com>
Signed-off-by: NMatthew Garrett <mjg@redhat.com>

Add three new rfkill switches in this driver that are specific to
Pegatron Lucid tablet.
Please note that you might not need all three switches. For example if
you don't have a 3G module inside your tablet.

Also, on my device, the gpio for the wifi/bt module is connected to the
bluetooth line. Therefore to activate your wireless lan interface, you
need to use the "pega-bt" rfkill switch.

Finally, the rfkill switch only works before the wireless module is
loaded the first time. Unloading ath9k doesn't help, a reboot is
necessary.
Signed-off-by: NAnisse Astier <anisse@astier.eu>
Signed-off-by: NCorentin Chary <corentincj@iksaif.net>
Signed-off-by: NMatthew Garrett <mjg@redhat.com>

Signed-off-by: NAnisse Astier <anisse@astier.eu>
Signed-off-by: NCorentin Chary <corentin.chary@gmail.com>
Signed-off-by: NMatthew Garrett <mjg@redhat.com>

Signed-off-by: NCorentin Chary <corentin.chary@gmail.com>
Signed-off-by: NMatthew Garrett <mjg@redhat.com>

Signed-off-by: NCorentin Chary <corentin.chary@gmail.com>
Signed-off-by: NMatthew Garrett <mjg@redhat.com>

Support the built-in accelerometer on the Lucid tablets as a standard
3-axis input device.
Signed-off-by: NAndy Ross <andy.ross@windriver.com>
Signed-off-by: NCorentin Chary <corentin.chary@gmail.com>
Signed-off-by: NMatthew Garrett <mjg@redhat.com>

Signed-off-by: NAndy Ross <andy.ross@windriver.com>
Signed-off-by: NCorentin Chary <corentin.chary@gmail.com>
Signed-off-by: NMatthew Garrett <mjg@redhat.com>

my samsung laptop would be very happy if you add
these lines to the file drivers/platform/x86/samsung-laptop.c

Cc: stable <stable@kernel.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: NMatthew Garrett <mjg@redhat.com>

My DMI model is this:
>dmesg |grep DMI
[    0.000000] DMI present.
[    0.000000] DMI: SAMSUNG ELECTRONICS CO., LTD. SR700/SR700, BIOS
04SR 02/20/2008

adding dmi information of Samsung R700 laptops
This adds the dmi information of Samsungs R700 laptops.
Signed-off-by: NStefan Beller <stefanbeller@googlemail.com>
Cc: stable <stable@kernel.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: NMatthew Garrett <mjg@redhat.com>

Add the corrected axis-mapping for some HP laptops.
Signed-off-by: NTakashi Iwai <tiwai@suse.de>
Signed-off-by: NMatthew Garrett <mjg@redhat.com>

New HP laptops assign a new PNP id "HPQ6000" for DriveGuard.
Signed-off-by: NTakashi Iwai <tiwai@suse.de>
Signed-off-by: NMatthew Garrett <mjg@redhat.com>

We need to remove devices that we destroy from the list, otherwise
we'll crash if there are more than one "_WDG" methods in DSDT.

This fixes https://bugzilla.kernel.org/show_bug.cgi?id=32052Tested-by: NIlya Tumaykin <librarian_rus@yahoo.com>
Cc: stable@kernel.org
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>
Acked-by: NCarlos Corbacho <carlos@strangeworlds.co.uk>
Signed-off-by: NMatthew Garrett <mjg@redhat.com>

Replaced by the one in debugfs.
Signed-off-by: NIke Panhc <ike.pan@canonical.com>
Signed-off-by: NMatthew Garrett <mjg@redhat.com>

Add two nodes in debugfs which shows cfg value and its meaning,
and status info read from VPC2004.
Signed-off-by: NIke Panhc <ike.pan@canonical.com>
Signed-off-by: NMatthew Garrett <mjg@redhat.com>

Novo key is the Lenovo define key on every ideapads, which has two
definition. Long press and short click. Driver will report
KEY_PROG1 on short click and KEY_PROG2 when long press.

On pre-install OS for ideapads there are application waiting for
the event and there is no such application for Linux yet, so I
think to report KEY_PROG is fine in anyway.

Also change the scancode from hex to decimal because they are
related to vpc bit in notify function which is in decimal.
Signed-off-by: NIke Panhc <ike.pan@canonical.com>
Signed-off-by: NMatthew Garrett <mjg@redhat.com>

This could save us a local variable.
Signed-off-by: NIke Panhc <ike.pan@canonical.com>
Signed-off-by: NMatthew Garrett <mjg@redhat.com>

Better then write hex number everywhere.
Signed-off-by: NIke Panhc <ike.pan@canonical.com>
Signed-off-by: NMatthew Garrett <mjg@redhat.com>

We need to save major device number to be able to use it for
unregister_chrdev() in ipc_module_exit().

ipc_module_init() must return 0 on success, not major device number.
Signed-off-by: NKirill A. Shutemov <kirill.shutemov@linux.intel.com>
Signed-off-by: NAlan Cox <alan@linux.intel.com>
Signed-off-by: NMatthew Garrett <mjg@redhat.com>

This patch avoid a page fault in the ideapad-laptop extras when
turning the backlight power on or off.
Signed-off-by: NRene Bolldorf <xsecute@googlemail.com>
Signed-off-by: NMatthew Garrett <mjg@redhat.com>

There will be better to check the wireless capability flag
(ACER_CAP_WIRELESS) before register wireless rfkill because maybe
the machine doesn't have wifi module or the module removed by user.

Tested on Acer Travelmate 8572
Tested on Acer Aspire 4739Z
Tested-by: NAceLan Kao <acelan.kao@canonical.com>
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: Thomas Renninger <trenn@suse.de>
Signed-off-by: NLee, Chun-Yi <jlee@suse.com>
Signed-off-by: NMatthew Garrett <mjg@redhat.com>

device_create returns &struct device pointer on success, or ERR_PTR() on error.
Thus if led_classdev_register fails, led_cdev->dev is always not NULL.

Thus to unregister a successful registered led_classdev, we should check
IS_ERR_OR_NULL macro for led_cdev->dev instead of checking if led_cdev->dev
is NULL or not.

we use IS_ERR_OR_NULL instead of IS_ERR because if we havn't call
led_classdev_register, the led_cdev->dev is NULL.
Signed-off-by: NAxel Lin <axel.lin@gmail.com>
Acked-by: NCorentin Chary <corentin.chary@gmail.com>
Signed-off-by: NMatthew Garrett <mjg@redhat.com>

This patch fixes wrong test for successful registered led_classdev,
and also fixes a leak due to missing led_classdev_unregister call
for asus->kbd_led in asus_wmi_led_exit.

device_create returns &struct device pointer on success, or ERR_PTR() on error.
Thus if led_classdev_register fails, led_cdev->dev is always not NULL.

Thus to unregister a successful registered led_classdev, we should check
(!IS_ERR_OR_NULL(asus->tpd_led.dev)) instead of (asus->tpd_led.dev).

we use IS_ERR_OR_NULL instead of IS_ERR because if we havn't call
led_classdev_register, the led_cdev->dev is NULL.
Signed-off-by: NAxel Lin <axel.lin@gmail.com>
Acked-by: NCorentin Chary <corentin.chary@gmail.com>
Signed-off-by: NMatthew Garrett <mjg@redhat.com>

device_create returns &struct device pointer on success, or ERR_PTR() on error.
Thus if led_classdev_register fails, led_cdev->dev is always not NULL.

If IS_ERR(eeepc->tpd_led.dev) is ture, it means led_classdev_register fails.
If (asus->tpd_led.dev) is NULL, it means we call eeepc_led_exit before
calling led_classdev_register for &eeepc->tpd_led.

We only want to call led_classdev_unregister for sucessfully registered
led_classdev, then we should check (!IS_ERR_OR_NULL(eeepc->tpd_led.dev)).
Signed-off-by: NAxel Lin <axel.lin@gmail.com>
Acked-by: NCorentin Chary <corentin.chary@gmail.com>
Signed-off-by: NMatthew Garrett <mjg@redhat.com>

Ambient light sensor for Pegatron Lucid.  Supports pre-existing
ls_switch sysfs interface to en/disable automatic control, and exports
the brightness from the device as "ls_value".
Signed-off-by: NAndy Ross <andy.ross@windriver.com>
Signed-off-by: NCorentin Chary <corentin.chary@gmail.com>
Signed-off-by: NMatthew Garrett <mjg@redhat.com>

Recognize the Pegatron Lucid tablets by their method signatures.
Signed-off-by: NAndy Ross <andy.ross@windriver.com>
Signed-off-by: NCorentin Chary <corentin.chary@gmail.com>
Signed-off-by: NMatthew Garrett <mjg@redhat.com>

This patch depends on the "Platform: Brightness quirk for samsung
laptop driver" patch from Jason Stubbs. This patch adds a check for an
initial brightness level of 0; if the level is 0, this patch changes
the brightness level to 1 before the driver attempts to detect the
brightness quirk.

The Samsung N150 netbook experiences the brightness quirk. Without
Jason's patch, the only brightness levels available on the N150 are 0,
1, and 8. This patch ensures that, when the initial brightness level
is 0, the samsang-laptop driver detects the brightness quirk on the
N150, thereby making brightness levels 0 through 8 available.
Signed-off-by: NJohn Serock <john.serock@gmail.com>
Acked-by: NJason Stubbs <jasonbstubbs@gmail.com>
Signed-off-by: NMatthew Garrett <mjg@redhat.com>