From add1fa75101263ab4d74240f93000998d4325624 Mon Sep 17 00:00:00 2001 From: Mario Kleiner Date: Sat, 27 Aug 2016 01:02:28 +0200 Subject: [PATCH] drm/atomic: Don't potentially reset color_mgmt_changed on successive property updates. Due to assigning the 'replaced' value instead of or'ing it, if drm_atomic_crtc_set_property() gets called multiple times, the last call will define the color_mgmt_changed flag, so a non-updating call to a property can reset the flag and prevent actual hw state updates required by preceding property updates. Signed-off-by: Mario Kleiner Cc: Daniel Vetter Cc: # v4.6+ Reviewed-by: Daniel Vetter Signed-off-by: Dave Airlie --- drivers/gpu/drm/drm_atomic.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/drm_atomic.c b/drivers/gpu/drm/drm_atomic.c index fa39307..2a3ded4 100644 --- a/drivers/gpu/drm/drm_atomic.c +++ b/drivers/gpu/drm/drm_atomic.c @@ -475,7 +475,7 @@ int drm_atomic_crtc_set_property(struct drm_crtc *crtc, val, -1, &replaced); - state->color_mgmt_changed = replaced; + state->color_mgmt_changed |= replaced; return ret; } else if (property == config->ctm_property) { ret = drm_atomic_replace_property_blob_from_id(crtc, @@ -483,7 +483,7 @@ int drm_atomic_crtc_set_property(struct drm_crtc *crtc, val, sizeof(struct drm_color_ctm), &replaced); - state->color_mgmt_changed = replaced; + state->color_mgmt_changed |= replaced; return ret; } else if (property == config->gamma_lut_property) { ret = drm_atomic_replace_property_blob_from_id(crtc, @@ -491,7 +491,7 @@ int drm_atomic_crtc_set_property(struct drm_crtc *crtc, val, -1, &replaced); - state->color_mgmt_changed = replaced; + state->color_mgmt_changed |= replaced; return ret; } else if (crtc->funcs->atomic_set_property) return crtc->funcs->atomic_set_property(crtc, state, property, val); -- 2.7.4