[PATCH] drm: writeback: Use simple encoder

[Tian Tao]

The driver uses empty implementations for its encoders. Replace
the code with the generic simple encoder.

Signed-off-by: Tian Tao <tiantao6 at hisilicon.com>
---
 drivers/gpu/drm/drm_writeback.c | 10 +++-------
 1 file changed, 3 insertions(+), 7 deletions(-)

diff --git a/drivers/gpu/drm/drm_writeback.c b/drivers/gpu/drm/drm_writeback.c
index dccf4504..dea9b25 100644
--- a/drivers/gpu/drm/drm_writeback.c
+++ b/drivers/gpu/drm/drm_writeback.c
@@ -16,6 +16,7 @@
 #include <drm/drm_drv.h>
 #include <drm/drm_modeset_helper_vtables.h>
 #include <drm/drm_property.h>
+#include <drm/drm_simple_kms_helper.h>
 #include <drm/drm_writeback.h>
 
 /**
@@ -145,10 +146,6 @@ static int create_writeback_properties(struct drm_device *dev)
 	return 0;
 }
 
-static const struct drm_encoder_funcs drm_writeback_encoder_funcs = {
-	.destroy = drm_encoder_cleanup,
-};
-
 /**
  * drm_writeback_connector_init - Initialize a writeback connector and its properties
  * @dev: DRM device
@@ -190,9 +187,8 @@ int drm_writeback_connector_init(struct drm_device *dev,
 		return PTR_ERR(blob);
 
 	drm_encoder_helper_add(&wb_connector->encoder, enc_helper_funcs);
-	ret = drm_encoder_init(dev, &wb_connector->encoder,
-			       &drm_writeback_encoder_funcs,
-			       DRM_MODE_ENCODER_VIRTUAL, NULL);
+	ret = drm_simple_encoder_init(dev, &wb_connector->encoder,
+				      DRM_MODE_ENCODER_VIRTUAL);
 	if (ret)
 		goto fail;
 
-- 
2.7.4