[Why]
With scaling, underscan and abm changes we can end up calling
commit_planes_to_stream in commit_tail. This call uses dm_state->context
which can be NULL if the commit was a fast update.

[How]
Use dc_state instead since that can't be NULL unless the system ran
out of memory.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=108912
Fixes: e64abff2f133 ("drm/amd/display: Use private obj helpers for 
dm_atomic_state")

Cc: Leo Li <sunpeng...@amd.com>
Cc: Harry Wentland <harry.wentl...@amd.com>
Signed-off-by: Nicholas Kazlauskas <nicholas.kazlaus...@amd.com>
---
 drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 2 +-
 1 file changed, 1 insertion(+), 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 76b1aebdca0c..8ecd78657d43 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -5011,7 +5011,7 @@ static void amdgpu_dm_atomic_commit_tail(struct 
drm_atomic_state *state)
                                status->plane_count,
                                dm_new_crtc_state,
                                to_dm_crtc_state(old_crtc_state),
-                               dm_state->context))
+                               dc_state))
                        dm_error("%s: Failed to update stream scaling!\n", 
__func__);
        }
 
-- 
2.17.1

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