From: jsg <jsg@openbsd.org>
Date: Fri, 11 Oct 2024 02:23:25 +0000 (+0000)
Subject: drm/amd/display: Check stream before comparing them
X-Git-Url: http://artulab.com/gitweb/?a=commitdiff_plain;h=a6b1359761d1e5054a57f711f94f8a170a65760f;p=openbsd

drm/amd/display: Check stream before comparing them

From Alex Hung
42d31a33643813cce55ee1ebbad3a2d0d24a08e0 in linux-6.6.y/6.6.55
35ff747c86767937ee1e0ca987545b7eed7a0810 in mainline linux
---

diff --git a/sys/dev/pci/drm/amd/display/dc/core/dc_resource.c b/sys/dev/pci/drm/amd/display/dc/core/dc_resource.c
index 32df2279f61..01e56d1e942 100644
--- a/sys/dev/pci/drm/amd/display/dc/core/dc_resource.c
+++ b/sys/dev/pci/drm/amd/display/dc/core/dc_resource.c
@@ -2154,6 +2154,8 @@ static bool are_stream_backends_same(
 bool dc_is_stream_unchanged(
 	struct dc_stream_state *old_stream, struct dc_stream_state *stream)
 {
+	if (!old_stream || !stream)
+		return false;
 
 	if (!are_stream_backends_same(old_stream, stream))
 		return false;