4.11-stable review patch. If anyone has any objections, please let me know.
------------------
From: Ben Skeggs <bskeggs@xxxxxxxxxx>
commit 36601c2b36e27435d9be33cfa092120ff69914eb upstream.
This "optimisation" (which was originally meant to skip updating cursor
settings in the core channel on position-only updates) turned out to be
pointless in the final design of the code before it was merged.
Remove it completely, as it breaks other cases.
Signed-off-by: Ben Skeggs <bskeggs@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/nouveau/nv50_display.c | 8 +++-----
1 file changed, 3 insertions(+), 5 deletions(-)
--- a/drivers/gpu/drm/nouveau/nv50_display.c
+++ b/drivers/gpu/drm/nouveau/nv50_display.c
@@ -906,11 +906,9 @@ nv50_wndw_atomic_check(struct drm_plane
if (memcmp(&armw->point, &asyw->point, sizeof(asyw->point)))
asyw->set.point = true;
- if (!varm || asym || armw->state.fb != asyw->state.fb) {
- ret = nv50_wndw_atomic_check_acquire(wndw, asyw, asyh);
- if (ret)
- return ret;
- }
+ ret = nv50_wndw_atomic_check_acquire(wndw, asyw, asyh);
+ if (ret)
+ return ret;
} else
if (varm) {
nv50_wndw_atomic_check_release(wndw, asyw, harm);