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8 Commits

Author SHA1 Message Date
Wim Van Sebroeck
5f3b27569f watchdog: cleanup spaces before tabs 
cleanup spaces before tabs in drivers/watchdog/

Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
 2011-03-15 16:02:27 +00:00
Jiri Slaby
d406577526 watchdog: sbc_fitpc2_wdt, fix crash on systems without DMI_BOARD_NAME 
Some systems don't provide DMI_BOARD_NAME in their DMI tables. Avoid
crash in such situations in fitpc2_wdt_init.

The fix is to check if the dmi_get_system_info return value is NULL.

The oops:
BUG: unable to handle kernel NULL pointer dereference at           (null)
IP: [<ffffffff81253ae6>] strstr+0x26/0xa0
PGD 3966e067 PUD 39605067 PMD 0
Oops: 0000 [#1] SMP
last sysfs file: /sys/devices/system/cpu/cpu1/cache/index2/shared_cpu_map
CPU 1
Modules linked in: ...
Pid: 1748, comm: modprobe Not tainted 2.6.37-22-default #1 /Bochs
RIP: 0010:[<ffffffff81253ae6>]  [<ffffffff81253ae6>] strstr+0x26/0xa0
RSP: 0018:ffff88003ad73f18  EFLAGS: 00010206
RAX: 0000000000000000 RBX: 00000000ffffffed RCX: 00000000ffffffff
RDX: ffffffffa003f4cc RSI: ffffffffa003f4c2 RDI: 0000000000000000
...
CR2: 0000000000000000 CR3: 000000003b7ac000 CR4: 00000000000006e0
...
Process modprobe (pid: 1748, threadinfo ffff88003ad72000, task ffff88002e6365c0)
Stack: ...
Call Trace:
 [<ffffffffa004201f>] fitpc2_wdt_init+0x1f/0x13c [sbc_fitpc2_wdt]
 [<ffffffff810002da>] do_one_initcall+0x3a/0x170
...
Code: f3 c3 0f 1f 00 80 3e 00 53 48 89 f8 74 1b 48 89 f2 0f 1f 40 00 48 83 c2 01 80 3a 00 75 f7 49 89 d0 48 89 f8 49 29 f0 75 02 5b c3 <80> 3f 00 74 0e 0f 1f 44 00 00 48 83 c0 01 80 38 00 75 f7 49 89

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
 2011-03-09 21:33:37 +00:00
Denis Turischev
322af98c56 watchdog: sbc_fitpc2_wdt: fixed "scheduling while atomic" bug. 
spinlock need to be replaced by mutex because of sleep functions
inside wdt_send_data.

Signed-off-by: Denis Turischev <denis@compulab.co.il>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
 2010-04-26 18:22:30 +00:00
Denis Turischev
fcf1dd7e68 watchdog: sbc_fitpc2_wdt: fixed I/O operations order 
There are fitpc2 compatible boards that hang with existent i/o
operations order. Solution is to switch between writing to data
and command ports.

Signed-off-by: Denis Turischev <denis@compulab.co.il>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
 2010-04-26 18:17:34 +00:00
Wim Van Sebroeck
42747d712d [WATCHDOG] watchdog_info constify 
make the watchdog_info struct const where possible.

Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
 2010-03-07 10:30:57 +00:00
Denis Turischev
ef39a1bf3c [WATCHDOG] sbc_fitpc2_wdt: fix I/O space access technique. 
The mdelay function was used between I/O access commands, that causes peak
in CPU usage. Fix it by substitution mdelay to msleep.

Expand usage on fitPC2 compatible boards according to DMI identification.

Signed-off-by: Denis Turischev <denis@compulab.co.il>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
 2010-01-25 19:48:49 +00:00
Denis Turischev
1efd374d78 [WATCHDOG] SBC-FITPC2 watchdog driver registration fix 
This patch fixes device registration process.

Signed-off-by: Denis Turischev <denis@compulab.co.il>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
 2009-11-10 15:06:52 +00:00
Denis Turischev
3a5f90002e [WATCHDOG] add SBC-FITPC2 watchdog driver 
Add support for watchdog found on SBC-FITPC2 board.

Signed-off-by: Denis Turischev <denis@compulab.co.il>
Signed-off-by: Mike Rapoport <mike@compulab.co.il>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
 2009-09-18 08:34:56 +00:00