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
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amthif.c	mei: streamline amthif write complete function	2012-11-21 12:43:58 -08:00
hw.h	mei: use the same bus msg for connect and disconnect request	2012-11-15 15:34:19 -08:00
init.c	mei: Simplify the ME client enumeration code	2012-11-21 12:43:58 -08:00
interface.c	mei: compact code for mei bus message creation	2012-11-21 12:43:57 -08:00
interface.h	mei: wd: decouple and revamp watchdog state machine	2012-08-16 09:51:02 -07:00
interrupt.c	mei: Simplify the ME client enumeration code	2012-11-21 12:43:58 -08:00
iorw.c	mei: use link and unlink terms for connecting ME and HOST client	2012-11-15 15:34:19 -08:00
Kconfig	char/misc: remove CONFIG_EXPERIMENTAL dependencies	2012-09-18 16:14:53 +01:00
main.c	misc: remove use of __devexit	2012-11-21 12:53:32 -08:00
Makefile	mei: extract AMTHI functions into the amthif.c file	2012-11-01 12:31:19 -07:00
mei_dev.h	mei: Simplify the ME client enumeration code	2012-11-21 12:43:58 -08:00
wd.c	watchdog: mei: avoid oops in watchdog unregister code path	2012-12-19 22:25:11 +01:00