linux-toradex.git/drivers/platform/x86/hp_accel.c, branch v3.2.2-rt10

Merge branch 'akpm' (Andrew's incoming)

2011-11-01T00:46:07+00:00

Quoth Andrew:

 - Most of MM.  Still waiting for the poweroc guys to get off their
   butts and review some threaded hugepages patches.

 - alpha

 - vfs bits

 - drivers/misc

 - a few core kerenl tweaks

 - printk() features

 - MAINTAINERS updates

 - backlight merge

 - leds merge

 - various lib/ updates

 - checkpatch updates

* akpm: (127 commits)
  epoll: fix spurious lockdep warnings
  checkpatch: add a --strict check for utf-8 in commit logs
  kernel.h/checkpatch: mark strict_strto and simple_strto as obsolete
  llist-return-whether-list-is-empty-before-adding-in-llist_add-fix
  wireless: at76c50x: follow rename pack_hex_byte to hex_byte_pack
  fat: follow rename pack_hex_byte() to hex_byte_pack()
  security: follow rename pack_hex_byte() to hex_byte_pack()
  kgdb: follow rename pack_hex_byte() to hex_byte_pack()
  lib: rename pack_hex_byte() to hex_byte_pack()
  lib/string.c: fix strim() semantics for strings that have only blanks
  lib/idr.c: fix comment for ida_get_new_above()
  lib/percpu_counter.c: enclose hotplug only variables in hotplug ifdef
  lib/bitmap.c: quiet sparse noise about address space
  lib/spinlock_debug.c: print owner on spinlock lockup
  lib/kstrtox: common code between kstrto*() and simple_strto*() functions
  drivers/leds/leds-lp5521.c: check if reset is successful
  leds: turn the blink_timer off before starting to blink
  leds: save the delay values after a successful call to blink_set()
  drivers/leds/leds-gpio.c: use gpio_get_value_cansleep() when initializing
  drivers/leds/leds-lm3530.c: add __devexit_p where needed
  ...

lis3: change exported function to use passed parameter

2011-11-01T00:30:52+00:00

Change exported functions to use the device given as parameter
instead of the global one.

Signed-off-by: Ilkka Koskinen 
Signed-off-by: Éric Piel 
Cc: Matthew Garrett 
Cc: Witold Pilat 
Cc: Lyall Pearce 
Cc: Malte Starostik 
Cc: Thadeu Lima de Souza Cascardo 
Cc: Christian Lamparter 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

hp_accel: add HP ProBook 655x

2011-11-01T00:30:52+00:00

Add axis correction for HP ProBook 6555b.

Signed-off-by: Malte Starostik 
Signed-off-by: Éric Piel 
Cc: Matthew Garrett 
Cc: Witold Pilat 
Cc: Lyall Pearce 
Cc: Ilkka Koskinen 
Cc: Thadeu Lima de Souza Cascardo 
Cc: Christian Lamparter 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

lis3: add support for HP EliteBook 8540w

2011-11-01T00:30:52+00:00

Add axis correction for HP EliteBook 8540w.

Reported-by: Lyall Pearce 
Signed-off-by: Éric Piel 
Cc: Matthew Garrett 
Cc: Witold Pilat 
Cc: Malte Starostik 
Cc: Ilkka Koskinen 
Cc: Thadeu Lima de Souza Cascardo 
Cc: Christian Lamparter 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

lis3: add support for HP EliteBook 2730p

2011-11-01T00:30:52+00:00

Add axis correction for HP EliteBook 2730p.

Tested-by: Witold Pilat 
Signed-off-by: Éric Piel 
Cc: Matthew Garrett 
Cc: Lyall Pearce 
Cc: Malte Starostik 
Cc: Ilkka Koskinen 
Cc: Thadeu Lima de Souza Cascardo 
Cc: Christian Lamparter 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

lis3lv02d: avoid divide by zero due to unchecked

2011-11-01T00:30:51+00:00

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:[]  []
		 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:
 [] lis3lv02d_init_device+0x1ce/0x496 [lis3lv02d]
 [] lis3lv02d_add+0x10f/0x17c [hp_accel]
 [] 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  f9 89 c7 e8 93 82 ef e0 48 83 7b 30 00 74 2d 45
31 e4 80 7b=20
RIP  [] lis3lv02d_poweron+0x4e/0x94 [lis3lv02d]
 RSP 

>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: Christian Lamparter 
Signed-off-by: Éric Piel 
Cc: Matthew Garrett 
Cc: Witold Pilat 
Cc: Lyall Pearce 
Cc: Malte Starostik 
Cc: Ilkka Koskinen 
Cc: Thadeu Lima de Souza Cascardo 
Cc: Christian Lamparter 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

hp_accel: Add axis-mapping for HP ProBook / EliteBook

2011-10-24T14:52:40+00:00

Add the corrected axis-mapping for some HP laptops.

Signed-off-by: Takashi Iwai 
Signed-off-by: Matthew Garrett

hp_accel: Add a new PNP id

2011-10-24T14:52:40+00:00

New HP laptops assign a new PNP id "HPQ6000" for DriveGuard.

Signed-off-by: Takashi Iwai 
Signed-off-by: Matthew Garrett

hp_accel: Fix driver name

2011-03-21T16:59:36+00:00

I suspect that the "lis3lv02d" driver name is a legacy from before
the split into several modules. Use a specific name for the hp_accel
driver, for better error messages and easier investigation of issues.

Signed-off-by: Jean Delvare 
Acked-by: Guenter Roeck 
Acked-by: Eric Piel 
Acked-by: Jonathan Cameron 
Tested-by: Eric Piel 
Tested-by: Takashi Iwai

Move lis3lv02d drivers to drivers/misc

2011-03-21T16:59:36+00:00

The lis3lv02d drivers aren't hardware monitoring drivers, so the don't
belong to drivers/hwmon. Move them to drivers/misc, short of a better
home.

Signed-off-by: Jean Delvare 
Acked-by: Guenter Roeck 
Acked-by: Eric Piel 
Acked-by: Jonathan Cameron 
Tested-by: Eric Piel 
Tested-by: Takashi Iwai