Thomas Gleixner b032bf70df ACPI/CPUIDLE: prevent setting pm_idle to NULL ... pm_idle_save resp. pm_idle_old can be NULL when the restore code in acpi_processor_cst_has_changed() resp. cpuidle_uninstall_idle_handler() is called. This can set pm_idle unconditinally to NULL, which causes the kernel to panic when calling pm_idle in the x86 idle code. This was covered by an extra check for !pm_idle in the x86 idle code, which was removed during the x86 idle code refactoring. Instead of restoring the pm_idle check in the x86 code prevent the acpi/cpuidle code to set pm_idle to NULL. Reported by: Dhaval Giani http://lkml.org/lkml/2008/7/2/309 Based on a debug patch from Ingo Molnar Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2008-07-28 08:31:58 -07:00
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governors	pm qos infrastructure and interface	2008-02-05 09:44:22 -08:00
cpuidle.c	ACPI/CPUIDLE: prevent setting pm_idle to NULL	2008-07-28 08:31:58 -07:00
cpuidle.h	cpuidle: consolidate 2.6.22 cpuidle branch into one patch	2007-10-10 00:12:41 -04:00
driver.c	cpuidle: consolidate 2.6.22 cpuidle branch into one patch	2007-10-10 00:12:41 -04:00
governor.c	cpuidle: remove unused exports	2007-10-29 17:27:50 -04:00
Kconfig	ACPI: CONFIG_CPU_IDLE=ACPI by default	2007-11-19 22:22:37 -05:00
Makefile	cpuidle: consolidate 2.6.22 cpuidle branch into one patch	2007-10-10 00:12:41 -04:00
sysfs.c	sysdev: Pass the attribute to the low level sysdev show/store function	2008-07-21 21:55:02 -07:00