Use drm_connector instead of drm_writeback_connector since it now
resides within drm_connector and also helps make sure
drm_wrtieback_connector is being modified mostly by drm core
provided helpers.

Signed-off-by: Suraj Kandpal <suraj.kandpal@intel.com>
---
 drivers/gpu/drm/drm_atomic_uapi.c | 4 +---
 drivers/gpu/drm/drm_writeback.c   | 6 +++---
 include/drm/drm_writeback.h       | 2 +-
 3 files changed, 5 insertions(+), 7 deletions(-)

diff --git a/drivers/gpu/drm/drm_atomic_uapi.c b/drivers/gpu/drm/drm_atomic_uapi.c
index ecc73d52bfae..72d0dfd2d501 100644
--- a/drivers/gpu/drm/drm_atomic_uapi.c
+++ b/drivers/gpu/drm/drm_atomic_uapi.c
@@ -1270,7 +1270,6 @@ static int prepare_signaling(struct drm_device *dev,
 	}
 
 	for_each_new_connector_in_state(state, conn, conn_state, i) {
-		struct drm_writeback_connector *wb_conn;
 		struct drm_out_fence_state *f;
 		struct dma_fence *fence;
 		s32 __user *fence_ptr;
@@ -1292,8 +1291,7 @@ static int prepare_signaling(struct drm_device *dev,
 		f[*num_fences].out_fence_ptr = fence_ptr;
 		*fence_state = f;
 
-		wb_conn = drm_connector_to_writeback(conn);
-		fence = drm_writeback_get_out_fence(wb_conn);
+		fence = drm_writeback_get_out_fence(conn);
 		if (!fence)
 			return -ENOMEM;
 
diff --git a/drivers/gpu/drm/drm_writeback.c b/drivers/gpu/drm/drm_writeback.c
index d41eee6688d8..569160ed713c 100644
--- a/drivers/gpu/drm/drm_writeback.c
+++ b/drivers/gpu/drm/drm_writeback.c
@@ -533,11 +533,11 @@ drm_writeback_signal_completion(struct drm_connector *connector,
 EXPORT_SYMBOL(drm_writeback_signal_completion);
 
 struct dma_fence *
-drm_writeback_get_out_fence(struct drm_writeback_connector *wb_connector)
+drm_writeback_get_out_fence(struct drm_connector *connector)
 {
 	struct dma_fence *fence;
-	struct drm_connector *connector =
-		drm_writeback_to_connector(wb_connector);
+	struct drm_writeback_connector *wb_connector =
+		drm_connector_to_writeback(connector);
 
 	if (WARN_ON(connector->connector_type !=
 		    DRM_MODE_CONNECTOR_WRITEBACK))
diff --git a/include/drm/drm_writeback.h b/include/drm/drm_writeback.h
index 42b7f635eab6..af52640114cf 100644
--- a/include/drm/drm_writeback.h
+++ b/include/drm/drm_writeback.h
@@ -110,5 +110,5 @@ drm_writeback_signal_completion(struct drm_connector *connector,
 				int status);
 
 struct dma_fence *
-drm_writeback_get_out_fence(struct drm_writeback_connector *wb_connector);
+drm_writeback_get_out_fence(struct drm_connector *connector);
 #endif
-- 
2.34.1