drm/amd/display: Initialize stream_update to zero

[Why]
The stream_update struct is left unitialized but DC will access
its fields. This usually results in global state validation occur
during any atomic commit with state->allow_modeset = true.

[How]
Initialize the struct to zero for every stream we check.

Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Reviewed-by: David Francis <David.Francis@amd.com>
Acked-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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 387f1ba..824e177 100644 (file)
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -5773,7 +5773,6 @@ dm_determine_update_type_for_commit(struct dc *dc,
 
        struct dc_surface_update *updates;
        struct dc_plane_state *surface;
-       struct dc_stream_update stream_update;
        enum surface_update_type update_type = UPDATE_TYPE_FAST;
 
        updates = kcalloc(MAX_SURFACES, sizeof(*updates), GFP_KERNEL);
@@ -5787,6 +5786,8 @@ dm_determine_update_type_for_commit(struct dc *dc,
        }
 
        for_each_oldnew_crtc_in_state(state, crtc, old_crtc_state, new_crtc_state, i) {
+               struct dc_stream_update stream_update = { 0 };
+
                new_dm_crtc_state = to_dm_crtc_state(new_crtc_state);
                old_dm_crtc_state = to_dm_crtc_state(old_crtc_state);
                num_plane = 0;