diff --git a/drivers/gpu/drm/nouveau/dispnv50/disp.c b/drivers/gpu/drm/nouveau/dispnv50/disp.c
index 42e1665ba11a..33066b3ab7f1 100644
--- a/drivers/gpu/drm/nouveau/dispnv50/disp.c
+++ b/drivers/gpu/drm/nouveau/dispnv50/disp.c
@@ -1124,7 +1124,7 @@ nv50_mstc_mode_valid(struct drm_connector *connector,
 	 * MSTB's max possible PBN
 	 */
 
-	return nv50_dp_mode_valid(connector, outp, mode, NULL);
+	return nv50_dp_mode_valid(outp, mode, NULL);
 }
 
 static int
diff --git a/drivers/gpu/drm/nouveau/nouveau_connector.c b/drivers/gpu/drm/nouveau/nouveau_connector.c
index 52c966139677..68b4fb4bec63 100644
--- a/drivers/gpu/drm/nouveau/nouveau_connector.c
+++ b/drivers/gpu/drm/nouveau/nouveau_connector.c
@@ -1082,7 +1082,7 @@ nouveau_connector_mode_valid(struct drm_connector *connector,
 	case DCB_OUTPUT_TV:
 		return get_slave_funcs(encoder)->mode_valid(encoder, mode);
 	case DCB_OUTPUT_DP:
-		return nv50_dp_mode_valid(connector, nv_encoder, mode, NULL);
+		return nv50_dp_mode_valid(nv_encoder, mode, NULL);
 	default:
 		BUG();
 		return MODE_BAD;
diff --git a/drivers/gpu/drm/nouveau/nouveau_dp.c b/drivers/gpu/drm/nouveau/nouveau_dp.c
index d49b4875fc3c..6a4980b2d4d4 100644
--- a/drivers/gpu/drm/nouveau/nouveau_dp.c
+++ b/drivers/gpu/drm/nouveau/nouveau_dp.c
@@ -267,8 +267,7 @@ nouveau_dp_irq(struct work_struct *work)
  *   yet)
  */
 enum drm_mode_status
-nv50_dp_mode_valid(struct drm_connector *connector,
-		   struct nouveau_encoder *outp,
+nv50_dp_mode_valid(struct nouveau_encoder *outp,
 		   const struct drm_display_mode *mode,
 		   unsigned *out_clock)
 {
diff --git a/drivers/gpu/drm/nouveau/nouveau_encoder.h b/drivers/gpu/drm/nouveau/nouveau_encoder.h
index 70c1ad6c4d9d..bcba1a14cfab 100644
--- a/drivers/gpu/drm/nouveau/nouveau_encoder.h
+++ b/drivers/gpu/drm/nouveau/nouveau_encoder.h
@@ -143,8 +143,7 @@ enum nouveau_dp_status {
 int nouveau_dp_detect(struct nouveau_connector *, struct nouveau_encoder *);
 bool nouveau_dp_link_check(struct nouveau_connector *);
 void nouveau_dp_irq(struct work_struct *);
-enum drm_mode_status nv50_dp_mode_valid(struct drm_connector *,
-					struct nouveau_encoder *,
+enum drm_mode_status nv50_dp_mode_valid(struct nouveau_encoder *,
 					const struct drm_display_mode *,
 					unsigned *clock);