From: Michel Dänzer Date: Tue, 12 Sep 2023 10:22:24 +0000 (+0200) Subject: drm/amd/display: Check all enabled planes in dm_check_crtc_cursor X-Git-Tag: io_uring-6.7-2023-11-10~63^2~10^2~197 X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=003048ddf44b;p=linux-block.git drm/amd/display: Check all enabled planes in dm_check_crtc_cursor It was only checking planes which had any state changes in the same commit. However, it also needs to check other enabled planes. Not doing this meant that a commit might spuriously "succeed", resulting in the cursor plane displaying with incorrect scaling. See https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/3177#note_1824263 for an example. Fixes: d1bfbe8a3202 ("amd/display: check cursor plane matches underlying plane") Reviewed-by: Alex Deucher Signed-off-by: Michel Dänzer Signed-off-by: Hamza Mahfooz Signed-off-by: Alex Deucher --- 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 4dfb1cb2efb1..059d1a32fbbf 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -10019,14 +10019,24 @@ static int dm_check_crtc_cursor(struct drm_atomic_state *state, * blending properties match the underlying planes'. */ - new_cursor_state = drm_atomic_get_new_plane_state(state, cursor); - if (!new_cursor_state || !new_cursor_state->fb) + new_cursor_state = drm_atomic_get_plane_state(state, cursor); + if (IS_ERR(new_cursor_state)) + return PTR_ERR(new_cursor_state); + + if (!new_cursor_state->fb) return 0; dm_get_oriented_plane_size(new_cursor_state, &cursor_src_w, &cursor_src_h); cursor_scale_w = new_cursor_state->crtc_w * 1000 / cursor_src_w; cursor_scale_h = new_cursor_state->crtc_h * 1000 / cursor_src_h; + /* Need to check all enabled planes, even if this commit doesn't change + * their state + */ + i = drm_atomic_add_affected_planes(state, crtc); + if (i) + return i; + for_each_new_plane_in_state_reverse(state, underlying, new_underlying_state, i) { /* Narrow down to non-cursor planes on the same CRTC as the cursor */ if (new_underlying_state->crtc != crtc || underlying == crtc->cursor)