diff --git a/drivers/gpu/drm/rockchip/inno_hdmi.c b/drivers/gpu/drm/rockchip/inno_hdmi.c
index a50d1d7e9e06d740fe34dafd2b9512c84091f9ad..0b16e449c17bfaec5653f709a4be45d10c96d810 100644
--- a/drivers/gpu/drm/rockchip/inno_hdmi.c
+++ b/drivers/gpu/drm/rockchip/inno_hdmi.c
@@ -61,7 +61,6 @@ struct inno_hdmi {
 	unsigned int tmds_rate;
 
 	struct hdmi_data_info	hdmi_data;
-	struct drm_display_mode previous_mode;
 };
 
 static struct inno_hdmi *encoder_to_inno_hdmi(struct drm_encoder *encoder)
@@ -497,9 +496,6 @@ static void inno_hdmi_encoder_mode_set(struct drm_encoder *encoder,
 	struct inno_hdmi *hdmi = encoder_to_inno_hdmi(encoder);
 
 	inno_hdmi_setup(hdmi, adj_mode);
-
-	/* Store the display mode for plugin/DPMS poweron events */
-	drm_mode_copy(&hdmi->previous_mode, adj_mode);
 }
 
 static void inno_hdmi_encoder_enable(struct drm_encoder *encoder)