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d692170037
linux/drivers/misc
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Tomas Winkler d692170037 watchdog: mei: avoid oops in watchdog unregister code path 
With commit c7d3df3 "mei: use internal watchdog device registration
tracking" will crash the kernel on shutdown path on systems
where ME watchdog is not present.
Since the watchdog was never initialized in such case
the WDOG_UNREGISTERED bit is never set and the system
crashes on access to uninitialized variables down the path.

To solve the issue we query for NULL on watchdog driver driver_data
to check whether the device is registered. This is handled in the
driver and doesn't depend on watchdog core internals.

Cc: Borislav Petkov <bp@alien8.de>
Cc: Wanlong Gao <gaowanlong@cn.fujitsu.com>
Signed-off-by: Jerry Snitselaar <jerry.snitselaar@oracle.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2012-12-19 22:25:11 +01:00
..
altera-stapl Merge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media 2011-10-31 15:42:54 -07:00
c2port char/misc: remove CONFIG_EXPERIMENTAL dependencies 2012-09-18 16:14:53 +01:00
carma mm: kill vma flag VM_RESERVED and mm->reserved_vm counter 2012-10-09 16:22:19 +09:00
cb710 misc: remove use of __devexit 2012-11-21 12:53:32 -08:00
eeprom misc: remove use of __devexit 2012-11-21 12:53:32 -08:00
ibmasm misc: remove use of __devexit 2012-11-21 12:53:32 -08:00
lis3lv02d misc: remove use of __devexit 2012-11-21 12:53:32 -08:00
mei watchdog: mei: avoid oops in watchdog unregister code path 2012-12-19 22:25:11 +01:00
sgi-gru mm: kill vma flag VM_RESERVED and mm->reserved_vm counter 2012-10-09 16:22:19 +09:00
sgi-xp drivers/misc/sgi-xp/xpc_uv.c: SGI XPC fails to load when cpu 0 is out of IRQ resources 2012-08-21 16:45:03 -07:00
ti-st misc/st_kim: Free resources in the error path of probe() 2012-11-26 16:16:35 -08:00
ad525x_dpot-i2c.c misc: remove use of __devexit 2012-11-21 12:53:32 -08:00
ad525x_dpot-spi.c misc: remove use of __devexit 2012-11-21 12:53:32 -08:00
ad525x_dpot.c misc: remove use of __devinit 2012-11-21 12:51:53 -08:00
ad525x_dpot.h Merge branch 'char-misc-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc 2012-01-09 12:08:59 -08:00
apds990x.c misc: remove use of __devexit 2012-11-21 12:53:32 -08:00
apds9802als.c misc: remove use of __devexit 2012-11-21 12:53:32 -08:00
arm-charlcd.c
atmel_pwm.c
atmel_tclib.c ARM: at91/tc/clocksource: Add 32 bit variant to Timer Counter 2012-03-01 13:38:49 +01:00
atmel-ssc.c Sound updates for 3.8-rc1 2012-12-13 11:51:23 -08:00
bh1770glc.c misc: remove use of __devexit 2012-11-21 12:53:32 -08:00
bh1780gli.c misc: remove use of __devexit 2012-11-21 12:53:32 -08:00
bmp085-i2c.c misc: remove use of __devinit 2012-11-21 12:51:53 -08:00
bmp085-spi.c misc: remove use of __devinit 2012-11-21 12:51:53 -08:00
bmp085.c misc: remove use of __devinit 2012-11-21 12:51:53 -08:00
bmp085.h misc: add support for bmp18x chips to the bmp085 driver 2012-04-18 14:57:14 -07:00
cs5535-mfgpt.c misc: remove use of __devinit 2012-11-21 12:51:53 -08:00
ds1682.c MISC: convert drivers/misc/* to use module_i2c_driver() 2012-01-24 16:31:49 -08:00
enclosure.c
ep93xx_pwm.c
fsa9480.c misc: remove use of __devexit 2012-11-21 12:53:32 -08:00
hmc6352.c MISC: convert drivers/misc/* to use module_i2c_driver() 2012-01-24 16:31:49 -08:00
hpilo.c misc: remove use of __devinit 2012-11-21 12:51:53 -08:00
hpilo.h misc: hpilo: increase number of max supported channels 2012-06-14 17:22:12 -07:00
ics932s401.c MISC: convert drivers/misc/* to use module_i2c_driver() 2012-01-24 16:31:49 -08:00
ioc4.c misc: remove use of __devexit 2012-11-21 12:53:32 -08:00
isl29003.c misc: remove use of __devexit 2012-11-21 12:53:32 -08:00
isl29020.c MISC: convert drivers/misc/* to use module_i2c_driver() 2012-01-24 16:31:49 -08:00
Kconfig pwm: Changes for v3.7-rc1 2012-10-10 20:15:24 +09:00
kgdbts.c x86,kgdb: Fix DEBUG_RODATA limitation using text_poke() 2012-03-29 17:41:25 -05:00
lkdtm.c drivers/misc/lkdtm.c: fix missing allocation failure check 2012-07-30 17:25:22 -07:00
Makefile pwm: Move AB8500 PWM driver to PWM framework 2012-09-20 12:52:03 +02:00
pch_phub.c misc: remove use of __devexit 2012-11-21 12:53:32 -08:00
phantom.c misc: remove use of __devexit 2012-11-21 12:53:32 -08:00
pti.c TTY/Serial merge for 3.8-rc1 2012-12-11 14:08:47 -08:00
spear13xx_pcie_gadget.c misc: remove use of __devexit 2012-11-21 12:53:32 -08:00
ti_dac7512.c misc: remove use of __devexit 2012-11-21 12:53:32 -08:00
tifm_7xx1.c tifm: use module_pci_driver 2012-09-05 14:10:29 -07:00
tifm_core.c drivers/misc: Add module.h to files who are really modular. 2011-10-31 19:31:53 -04:00
tsl2550.c misc: remove use of __devexit 2012-11-21 12:53:32 -08:00
vmw_balloon.c vmw_balloon: fix for a -Wuninitialized warning 2012-02-02 16:28:13 -08:00