diff --git a/drivers/gpu/drm/sun4i/sun4i_lvds.c b/drivers/gpu/drm/sun4i/sun4i_lvds.c
index af7dcb6da351..e7eb0d1e17be 100644
--- a/drivers/gpu/drm/sun4i/sun4i_lvds.c
+++ b/drivers/gpu/drm/sun4i/sun4i_lvds.c
@@ -75,7 +75,7 @@ static void sun4i_lvds_encoder_enable(struct drm_encoder *encoder)
 
 	DRM_DEBUG_DRIVER("Enabling LVDS output\n");
 
-	if (!IS_ERR(tcon->panel)) {
+	if (tcon->panel) {
 		drm_panel_prepare(tcon->panel);
 		drm_panel_enable(tcon->panel);
 	}
@@ -88,7 +88,7 @@ static void sun4i_lvds_encoder_disable(struct drm_encoder *encoder)
 
 	DRM_DEBUG_DRIVER("Disabling LVDS output\n");
 
-	if (!IS_ERR(tcon->panel)) {
+	if (tcon->panel) {
 		drm_panel_disable(tcon->panel);
 		drm_panel_unprepare(tcon->panel);
 	}
diff --git a/drivers/gpu/drm/sun4i/sun4i_rgb.c b/drivers/gpu/drm/sun4i/sun4i_rgb.c
index bf068da6b12e..f4a22689eb54 100644
--- a/drivers/gpu/drm/sun4i/sun4i_rgb.c
+++ b/drivers/gpu/drm/sun4i/sun4i_rgb.c
@@ -135,7 +135,7 @@ static void sun4i_rgb_encoder_enable(struct drm_encoder *encoder)
 
 	DRM_DEBUG_DRIVER("Enabling RGB output\n");
 
-	if (!IS_ERR(tcon->panel)) {
+	if (tcon->panel) {
 		drm_panel_prepare(tcon->panel);
 		drm_panel_enable(tcon->panel);
 	}
@@ -148,7 +148,7 @@ static void sun4i_rgb_encoder_disable(struct drm_encoder *encoder)
 
 	DRM_DEBUG_DRIVER("Disabling RGB output\n");
 
-	if (!IS_ERR(tcon->panel)) {
+	if (tcon->panel) {
 		drm_panel_disable(tcon->panel);
 		drm_panel_unprepare(tcon->panel);
 	}
diff --git a/drivers/gpu/drm/sun4i/sun4i_tcon.c b/drivers/gpu/drm/sun4i/sun4i_tcon.c
index c78cd35a1294..e4b3bd0307ef 100644
--- a/drivers/gpu/drm/sun4i/sun4i_tcon.c
+++ b/drivers/gpu/drm/sun4i/sun4i_tcon.c
@@ -555,7 +555,7 @@ static void sun4i_tcon0_mode_set_rgb(struct sun4i_tcon *tcon,
 	 * Following code is a way to avoid quirks all around TCON
 	 * and DOTCLOCK drivers.
 	 */
-	if (!IS_ERR(tcon->panel)) {
+	if (tcon->panel) {
 		struct drm_panel *panel = tcon->panel;
 		struct drm_connector *connector = panel->connector;
 		struct drm_display_info display_info = connector->display_info;