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backend/drm: fix atomic commits when the GAMMA_LUT prop is missing 

We already have the logic to fallback to the legacy interface above. We
just need to avoid calling atomic_add with a zero prop ID.

Closes: https://github.com/swaywm/wlroots/issues/2187
This commit is contained in:
Simon Ser 2020-05-14 17:26:30 +02:00 committed by Scott Anderson
parent 347bdb6d9a
commit 2988ebb6f3
1 changed files with 3 additions and 1 deletions
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4
backend/drm/atomic.c
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@ -200,7 +200,9 @@ static bool atomic_crtc_commit(struct wlr_drm_backend *drm,
atomic_add(&atom, crtc->id, crtc->props.mode_id, crtc->mode_id);
atomic_add(&atom, crtc->id, crtc->props.active, crtc->active);
if (crtc->active) {
atomic_add(&atom, crtc->id, crtc->props.gamma_lut, crtc->gamma_lut);
if (crtc->props.gamma_lut != 0) {
atomic_add(&atom, crtc->id, crtc->props.gamma_lut, crtc->gamma_lut);
}
set_plane_props(&atom, drm, crtc->primary, crtc->id, 0, 0);
if (crtc->cursor) {
if (crtc->cursor->cursor_enabled) {