drm/tidss: Remove return values from dispc_plane_{setup, enable}()

Calls to dispc_plane_setup() and dispc_plane_enable() cannot fail.
Remove the return value.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Reviewed-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230209154107.30680-6-tzimmermann@suse.de

drivers/gpu/drm/tidss/tidss_dispc.c

@@ -1985,9 +1985,9 @@ dma_addr_t dispc_plane_state_p_uv_addr(const struct drm_plane_state *state)
 		(y * fb->pitches[1] / fb->format->vsub);
 }
 
-int dispc_plane_setup(struct dispc_device *dispc, u32 hw_plane,
-		      const struct drm_plane_state *state,
-		      u32 hw_videoport)
+void dispc_plane_setup(struct dispc_device *dispc, u32 hw_plane,
+		       const struct drm_plane_state *state,
+		       u32 hw_videoport)
 {
 	bool lite = dispc->feat->vid_lite[hw_plane];
 	u32 fourcc = state->fb->format->format;
@@ -2066,15 +2066,11 @@ int dispc_plane_setup(struct dispc_device *dispc, u32 hw_plane,
 	else
 		VID_REG_FLD_MOD(dispc, hw_plane, DISPC_VID_ATTRIBUTES, 0,
 				28, 28);
-
-	return 0;
 }
 
-int dispc_plane_enable(struct dispc_device *dispc, u32 hw_plane, bool enable)
+void dispc_plane_enable(struct dispc_device *dispc, u32 hw_plane, bool enable)
 {
 	VID_REG_FLD_MOD(dispc, hw_plane, DISPC_VID_ATTRIBUTES, !!enable, 0, 0);
-
-	return 0;
 }
 
 static u32 dispc_vid_get_fifo_size(struct dispc_device *dispc, u32 hw_plane)

drivers/gpu/drm/tidss/tidss_dispc.h

@@ -123,10 +123,10 @@ int dispc_runtime_resume(struct dispc_device *dispc);
 int dispc_plane_check(struct dispc_device *dispc, u32 hw_plane,
 		      const struct drm_plane_state *state,
 		      u32 hw_videoport);
-int dispc_plane_setup(struct dispc_device *dispc, u32 hw_plane,
-		      const struct drm_plane_state *state,
-		      u32 hw_videoport);
-int dispc_plane_enable(struct dispc_device *dispc, u32 hw_plane, bool enable);
+void dispc_plane_setup(struct dispc_device *dispc, u32 hw_plane,
+		       const struct drm_plane_state *state,
+		       u32 hw_videoport);
+void dispc_plane_enable(struct dispc_device *dispc, u32 hw_plane, bool enable);
 const u32 *dispc_plane_formats(struct dispc_device *dispc, unsigned int *len);
 
 int dispc_init(struct tidss_device *tidss);

drivers/gpu/drm/tidss/tidss_plane.c

@@ -113,7 +113,6 @@ static void tidss_plane_atomic_update(struct drm_plane *plane,
 	struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state,
 									   plane);
 	u32 hw_videoport;
-	int ret;
 
 	dev_dbg(ddev->dev, "%s\n", __func__);
 
@@ -124,15 +123,7 @@ static void tidss_plane_atomic_update(struct drm_plane *plane,
 
 	hw_videoport = to_tidss_crtc(new_state->crtc)->hw_videoport;
 
-	ret = dispc_plane_setup(tidss->dispc, tplane->hw_plane_id,
-				new_state, hw_videoport);
-
-	if (ret) {
-		dev_err(plane->dev->dev, "%s: Failed to setup plane %d\n",
-			__func__, tplane->hw_plane_id);
-		dispc_plane_enable(tidss->dispc, tplane->hw_plane_id, false);
-		return;
-	}
+	dispc_plane_setup(tidss->dispc, tplane->hw_plane_id, new_state, hw_videoport);
 
 	dispc_plane_enable(tidss->dispc, tplane->hw_plane_id, true);
 }