From: Sung Joon Kim <sungkim@xxxxxxx>
[Why & How]
Call to immediate_disable_crtc was not checked before calling,
exposing a potential null pointer hang. Fix it.
Reviewed-by: Charlene Liu <charlene.liu@xxxxxxx>
Acked-by: Qingqing Zhuo <qingqing.zhuo@xxxxxxx>
Signed-off-by: Sung Joon Kim <sungkim@xxxxxxx>
---
drivers/gpu/drm/amd/display/dc/clk_mgr/dcn35/dcn35_clk_mgr.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn35/dcn35_clk_mgr.c b/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn35/dcn35_clk_mgr.c
index 98d6a1f8af60..ca6ce13921a7 100644
--- a/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn35/dcn35_clk_mgr.c
+++ b/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn35/dcn35_clk_mgr.c
@@ -128,7 +128,9 @@ static void dcn35_disable_otg_wa(struct clk_mgr *clk_mgr_base, struct dc_state *
if (stream_enc && stream_enc->funcs->disable_fifo)
pipe->stream_res.stream_enc->funcs->disable_fifo(stream_enc);
- pipe->stream_res.tg->funcs->immediate_disable_crtc(pipe->stream_res.tg);
+ if (pipe->stream_res.tg && pipe->stream_res.tg->funcs->immediate_disable_crtc)
+ pipe->stream_res.tg->funcs->immediate_disable_crtc(pipe->stream_res.tg);
+
reset_sync_context_for_pipe(dc, context, i);
} else {
pipe->stream_res.tg->funcs->enable_crtc(pipe->stream_res.tg);
--
2.40.1
