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wmi: check find_guid() return value to prevent oops
author
Paul Rolland
<rol@as2917.net>
Wed, 30 Dec 2009 06:19:12 +0000
(
01:19
-0500)
committer
Linus Torvalds
<torvalds@linux-foundation.org>
Wed, 30 Dec 2009 20:42:53 +0000
(12:42 -0800)
Signed-off-by: rol@as2917.net <Paul Rolland>
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
drivers/platform/x86/wmi.c
patch
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diff --git
a/drivers/platform/x86/wmi.c
b/drivers/platform/x86/wmi.c
index
9f93d6c
..
cc9ad74
100644
(file)
--- a/
drivers/platform/x86/wmi.c
+++ b/
drivers/platform/x86/wmi.c
@@
-492,8
+492,7
@@
wmi_notify_handler handler, void *data)
if (!guid || !handler)
return AE_BAD_PARAMETER;
- find_guid(guid, &block);
- if (!block)
+ if (!find_guid(guid, &block))
return AE_NOT_EXIST;
if (block->handler)
@@
-521,8
+520,7
@@
acpi_status wmi_remove_notify_handler(const char *guid)
if (!guid)
return AE_BAD_PARAMETER;
- find_guid(guid, &block);
- if (!block)
+ if (!find_guid(guid, &block))
return AE_NOT_EXIST;
if (!block->handler)