From b58454ec25e80fdb84e294758aeb22dd6d5ee6f9 Mon Sep 17 00:00:00 2001 From: Paul Rolland Date: Wed, 30 Dec 2009 01:19:12 -0500 Subject: [PATCH] wmi: check find_guid() return value to prevent oops Signed-off-by: rol@as2917.net Signed-off-by: Len Brown Signed-off-by: Linus Torvalds --- drivers/platform/x86/wmi.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/platform/x86/wmi.c b/drivers/platform/x86/wmi.c index 9f93d6c..cc9ad74 100644 --- 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) -- 2.7.4