drm/exynos: remove unnecessary connector dpms control

The connector dpms should be controlled only by DPMS property and mode
set.
Signed-off-by: NJoonyoung Shim <jy0922.shim@samsung.com>
Signed-off-by: NKyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: NInki Dae <inki.dae@samsung.com>

drivers/gpu/drm/exynos/exynos_drm_encoder.c

@@ -327,11 +327,9 @@ void exynos_drm_disable_vblank(struct drm_encoder *encoder, void *data)
 
 void exynos_drm_encoder_crtc_dpms(struct drm_encoder *encoder, void *data)
 {
-	struct drm_device *dev = encoder->dev;
 	struct exynos_drm_encoder *exynos_encoder = to_exynos_encoder(encoder);
 	struct exynos_drm_manager *manager = exynos_encoder->manager;
 	struct exynos_drm_manager_ops *manager_ops = manager->ops;
-	struct drm_connector *connector;
 	int mode = *(int *)data;
 
 	DRM_DEBUG_KMS("%s\n", __FILE__);
@@ -339,15 +337,6 @@ void exynos_drm_encoder_crtc_dpms(struct drm_encoder *encoder, void *data)
 	if (manager_ops && manager_ops->dpms)
 		manager_ops->dpms(manager->dev, mode);
 
-	/*
-	 * set current dpms mode to the connector connected to
-	 * current encoder. connector->dpms would be checked
-	 * at drm_helper_connector_dpms()
-	 */
-	list_for_each_entry(connector, &dev->mode_config.connector_list, head)
-		if (connector->encoder == encoder)
-			connector->dpms = mode;
-
 	/*
 	 * if this condition is ok then it means that the crtc is already
 	 * detached from encoder and last function for detaching is properly