Reported by smatch:
amdgpu_dm.c:5637 amdgpu_dm_commit_planes() error: we previously assumed 
'acrtc_state->stream' could be null
This seems to be checked for null pretty consistently elsewhere.

Signed-off-by: Ernst Sjöstrand <ern...@gmail.com>
---
 drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c 
b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
index 58d7bbc5ada7..360b31a5c028 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -5669,7 +5669,8 @@ static void amdgpu_dm_commit_planes(struct 
drm_atomic_state *state,
        }
 
        /* Update the planes if changed or disable if we don't have any. */
-       if (planes_count || acrtc_state->active_planes == 0) {
+       if ((planes_count || acrtc_state->active_planes == 0) &&
+               acrtc_state->stream) {
                if (new_pcrtc_state->mode_changed) {
                        bundle->stream_update.src = acrtc_state->stream->src;
                        bundle->stream_update.dst = acrtc_state->stream->dst;
-- 
2.20.1

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