diff options
| author |   Andrew Morton <akpm@osdl.org> | 2006-06-10 09:54:13 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@g5.osdl.org> | 2006-06-10 11:02:05 -0700 |
| commit | a913f50706b21c7933f53cec678bb9a1c2383499 (patch) | |
| tree | 4899980dac61984ea659eb878304a10868aa1b8f | |
| parent | [PATCH] Further alterations for memory barrier document (diff) | |
| download | linux-dev-a913f50706b21c7933f53cec678bb9a1c2383499.tar.xz linux-dev-a913f50706b21c7933f53cec678bb9a1c2383499.zip | |
[PATCH] powernow-k8 crash workaround
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>
| -rw-r--r-- | drivers/acpi/processor_perflib.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/acpi/processor_perflib.c b/drivers/acpi/processor_perflib.c index abbdb37a7f5f..f36db22ce1ae 100644 --- a/drivers/acpi/processor_perflib.c +++ b/drivers/acpi/processor_perflib.c @@ -577,6 +577,8 @@ acpi_processor_register_performance(struct acpi_processor_performance return_VALUE(-EBUSY); } + WARN_ON(!performance); + pr->performance = performance; if (acpi_processor_get_performance_info(pr)) { @@ -609,7 +611,8 @@ acpi_processor_unregister_performance(struct acpi_processor_performance return_VOID; } - kfree(pr->performance->states); + if (pr->performance) + kfree(pr->performance->states); pr->performance = NULL; acpi_cpufreq_remove_file(pr); |