drm/nouveau/kms: avoid adding scaler-only modes the same as the panel's native mode
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
diff --git a/drivers/gpu/drm/nouveau/nouveau_connector.c b/drivers/gpu/drm/nouveau/nouveau_connector.c
index d13f50d..660d0e7 100644
--- a/drivers/gpu/drm/nouveau/nouveau_connector.c
+++ b/drivers/gpu/drm/nouveau/nouveau_connector.c
@@ -672,7 +672,9 @@
while (mode->hdisplay) {
if (mode->hdisplay <= native->hdisplay &&
- mode->vdisplay <= native->vdisplay) {
+ mode->vdisplay <= native->vdisplay &&
+ (mode->hdisplay != native->hdisplay ||
+ mode->vdisplay != native->vdisplay)) {
m = drm_cvt_mode(dev, mode->hdisplay, mode->vdisplay,
drm_mode_vrefresh(native), false,
false, false);