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Commit c03b26a5 authored by Paul Rolland's avatar Paul Rolland Committed by Len Brown
Browse files

wmi: check find_guid() return value to prevent oops 



Signed-off-by: default avatarPaul Rolland <rol@as2917.net>
Signed-off-by: default avatarLen Brown <len.brown@intel.com>
parent fda11e61

drivers/platform/x86/wmi.c

+2 −4
Original line number Original line Diff line number Diff line
@@ -492,8 +492,7 @@ wmi_notify_handler handler, void *data) 
	if (!guid || !handler)

	if (!guid || !handler)

		return AE_BAD_PARAMETER;

		return AE_BAD_PARAMETER;





	find_guid(guid, &block);

	if (!find_guid(guid, &block))

	if (!block)

		return AE_NOT_EXIST;

		return AE_NOT_EXIST;





	if (block->handler)

	if (block->handler)
@@ -521,8 +520,7 @@ acpi_status wmi_remove_notify_handler(const char *guid) 
	if (!guid)

	if (!guid)

		return AE_BAD_PARAMETER;

		return AE_BAD_PARAMETER;





	find_guid(guid, &block);

	if (!find_guid(guid, &block))

	if (!block)

		return AE_NOT_EXIST;

		return AE_NOT_EXIST;





	if (!block->handler)

	if (!block->handler)