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-rw-r--r--drivers/gpu/drm/drm_plane_helper.c10
1 files changed, 9 insertions, 1 deletions
diff --git a/drivers/gpu/drm/drm_plane_helper.c b/drivers/gpu/drm/drm_plane_helper.c
index f24c4cfe674b..7a5814afe31a 100644
--- a/drivers/gpu/drm/drm_plane_helper.c
+++ b/drivers/gpu/drm/drm_plane_helper.c
@@ -435,7 +435,8 @@ int drm_plane_helper_commit(struct drm_plane *plane,
goto out;
}
- if (plane_funcs->prepare_fb && plane_state->fb) {
+ if (plane_funcs->prepare_fb && plane_state->fb &&
+ plane_state->fb != old_fb) {
ret = plane_funcs->prepare_fb(plane, plane_state->fb);
if (ret)
goto out;
@@ -456,6 +457,13 @@ int drm_plane_helper_commit(struct drm_plane *plane,
crtc_funcs[i]->atomic_flush(crtc[i]);
}
+ /*
+ * If we only moved the plane and didn't change fb's, there's no need to
+ * wait for vblank.
+ */
+ if (plane->state->fb == old_fb)
+ goto out;
+
for (i = 0; i < 2; i++) {
if (!crtc[i])
continue;