[Intel-gfx] [PATCH 1/2] drm/i915: Remove early return in prepare/cleanup plane

[Maarten Lankhorst]

This is a noop in prepare_plane, which already carefully handles this
with if guards and early return.

cleanup_plane_fb has it as a noop too, it only unpins old_fb and
unsets wait_req. The latter is a noop because prepare_plane won't
set wait_req when obj == NULL. It's also dangerous to keep because
plane->state may change before cleanup_plane_fb is called.

Signed-off-by: Maarten Lankhorst <maarten.lankhorst at linux.intel.com>
---
 drivers/gpu/drm/i915/intel_display.c | 12 ++----------
 1 file changed, 2 insertions(+), 10 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index b12c8302580f..f56707289615 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -14117,9 +14117,6 @@ intel_prepare_plane_fb(struct drm_plane *plane,
 	struct reservation_object *resv;
 	int ret = 0;
 
-	if (!obj && !old_obj)
-		return 0;
-
 	if (old_obj) {
 		struct drm_crtc_state *crtc_state =
 			drm_atomic_get_existing_crtc_state(new_state->state, plane->state->crtc);
@@ -14193,15 +14190,10 @@ intel_cleanup_plane_fb(struct drm_plane *plane,
 		       const struct drm_plane_state *old_state)
 {
 	struct drm_device *dev = plane->dev;
-	struct intel_plane_state *old_intel_state;
 	struct intel_plane_state *intel_state = to_intel_plane_state(plane->state);
 	struct drm_i915_gem_object *old_obj = intel_fb_obj(old_state->fb);
-	struct drm_i915_gem_object *obj = intel_fb_obj(plane->state->fb);
-
-	old_intel_state = to_intel_plane_state(old_state);
-
-	if (!obj && !old_obj)
-		return;
+	struct intel_plane_state *old_intel_state =
+		to_intel_plane_state(old_state);
 
 	if (old_obj && (plane->type != DRM_PLANE_TYPE_CURSOR ||
 	    !INTEL_INFO(dev)->cursor_needs_physical))
-- 
2.7.4