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[PATCH] powernow-k8 crash workaround

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From: Andrew Morton <akpm@osdl.org>

Work around the oops reported in
http://bugzilla.kernel.org/show_bug.cgi?id=6478.

Thanks to Ralf Hildebrandt <ralf.hildebrandt@charite.de> for testing and
reporting.

Acked-by: Dave Jones <davej@codemonkey.org.uk>
Cc: "Brown, Len" <len.brown@intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Andrew Morton 2006-06-10 09:54:13 -07:00 committed by Linus Torvalds
parent 670bd95e04
commit a913f50706
1 changed files with 4 additions and 1 deletions
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5
drivers/acpi/processor_perflib.c
View File

@ -577,6 +577,8 @@ acpi_processor_register_performance(struct acpi_processor_performance
return_VALUE(-EBUSY); return_VALUE(-EBUSY);
} }
WARN_ON(!performance);
pr->performance = performance; pr->performance = performance;
if (acpi_processor_get_performance_info(pr)) { if (acpi_processor_get_performance_info(pr)) {
@ -609,7 +611,8 @@ acpi_processor_unregister_performance(struct acpi_processor_performance
return_VOID; return_VOID;
} }
kfree(pr->performance->states); if (pr->performance)
kfree(pr->performance->states);
pr->performance = NULL; pr->performance = NULL;
acpi_cpufreq_remove_file(pr); acpi_cpufreq_remove_file(pr);