[PATCH v2 5/6] drm/msm: force mode_changed on color_mgmt_changed, not just ctm

[Xi Zhang via B4 Relay]

From: Xi Zhang <xz.ca.cn@xxxxxxxxx>

dpu_crtc_atomic_check calls dpu_crtc_assign_resources when
color_mgmt_changed is set, which is unsafe outside of full modeset.

Set allow_modeset and mode_changed when color_mgmt_changed is set,
not just when ctm is changed.

Also would fix
commit 42f62cd79578 ("drm/msm/dpu: try reserving the DSPP-less LM first")
which was reverted.

Closes: https://gitlab.freedesktop.org/drm/msm/-/work_items/102

Signed-off-by: Xi Zhang <xz.ca.cn@xxxxxxxxx>
---
 drivers/gpu/drm/msm/msm_atomic.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/msm/msm_atomic.c b/drivers/gpu/drm/msm/msm_atomic.c
index a8babf1dbe0d..6f0f30b0728a 100644
--- a/drivers/gpu/drm/msm/msm_atomic.c
+++ b/drivers/gpu/drm/msm/msm_atomic.c
@@ -195,8 +195,7 @@ int msm_atomic_check(struct drm_device *dev, struct drm_atomic_commit *state)
 	 */
 	for_each_oldnew_crtc_in_state(state, crtc, old_crtc_state,
 				      new_crtc_state, i) {
-		if ((old_crtc_state->ctm && !new_crtc_state->ctm) ||
-		    (!old_crtc_state->ctm && new_crtc_state->ctm)) {
+		if (new_crtc_state->color_mgmt_changed) {
 			new_crtc_state->mode_changed = true;
 			state->allow_modeset = true;
 		}

-- 
2.55.0