[ACPI] drivers/acpi/video.c: fix error path NULL pointer dereference
The Coverity checker spotted this bug in
acpi_video_device_lcd_query_levels().
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Len Brown <len.brown@intel.com>
diff --git a/drivers/acpi/video.c b/drivers/acpi/video.c
index bd48875..724149d 100644
--- a/drivers/acpi/video.c
+++ b/drivers/acpi/video.c
@@ -323,7 +323,7 @@
if (!ACPI_SUCCESS(status))
return_VALUE(status);
obj = (union acpi_object *)buffer.pointer;
- if (!obj && (obj->type != ACPI_TYPE_PACKAGE)) {
+ if (!obj || (obj->type != ACPI_TYPE_PACKAGE)) {
ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Invalid _BCL data\n"));
status = -EFAULT;
goto err;