From: Adrian Bunk <bunk@stusta.de>
Date: Sat, 11 Mar 2006 15:12:00 +0000 (-0500)
Subject: [ACPI] drivers/acpi/video.c: fix error path NULL pointer dereference
X-Git-Tag: firefly_0821_release~35458^2~19^2~13^2
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=6665bda76461308868bd1e52caf627f4cb29ed32;p=firefly-linux-kernel-4.4.55.git

[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 bd4887518373..724149d72d91 100644
--- a/drivers/acpi/video.c
+++ b/drivers/acpi/video.c
@@ -323,7 +323,7 @@ acpi_video_device_lcd_query_levels(struct acpi_video_device *device,
 	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;