From: Sung Joon Kim <sungjoon.kim@amd.com>
Date: Mon, 8 Jul 2024 23:29:49 +0000 (-0400)
Subject: drm/amd/display: Check for NULL pointer
X-Git-Tag: microblaze-v6.13~537^2^2~5
X-Git-Url: http://git.monstr.eu/?a=commitdiff_plain;h=4ab68e168ae1695f7c04fae98930740aaf7c50fa;p=linux-2.6-microblaze.git

drm/amd/display: Check for NULL pointer

[why & how]
Need to make sure plane_state is initialized
before accessing its members.

Cc: Mario Limonciello <mario.limonciello@amd.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Reviewed-by: Xi (Alex) Liu <xi.liu@amd.com>
Signed-off-by: Sung Joon Kim <sungjoon.kim@amd.com>
Signed-off-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 295d91cbc700651782a60572f83c24861607b648)
---

diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_surface.c b/drivers/gpu/drm/amd/display/dc/core/dc_surface.c
index 067f6555cfdf..ccbb15f1638c 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_surface.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_surface.c
@@ -143,7 +143,8 @@ const struct dc_plane_status *dc_plane_get_status(
 		if (pipe_ctx->plane_state != plane_state)
 			continue;
 
-		pipe_ctx->plane_state->status.is_flip_pending = false;
+		if (pipe_ctx->plane_state)
+			pipe_ctx->plane_state->status.is_flip_pending = false;
 
 		break;
 	}