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Commit b58454ec authored by Paul Rolland's avatar Paul Rolland Committed by Linus Torvalds
Browse files

wmi: check find_guid() return value to prevent oops 



Signed-off-by: rol@as2917.net <Paul Rolland>
Signed-off-by: default avatarLen Brown <len.brown@intel.com>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent b73d45da

drivers/platform/x86/wmi.c

+2 −4
Original line number Diff line number Diff line
@@ -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)