drm: omapdrm: omap_plane_setup() cannot fail, use WARN

With atomic modesetting, omap_plane_setup()'s return value is ignored as
the functions using it cannot fail. dispc_ovl_setup(), called by
omap_plane_setup(), can fail (but shouldn't).

Instead of returning an error from omap_plane_setup() which gets
ignored, return void and use WARN if dispc_ovl_setup() fails.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>

1 files changed, 4 insertions, 9 deletions

diff --git a/drivers/gpu/drm/omapdrm/omap_plane.c b/drivers/gpu/drm/omapdrm/omap_plane.c
index 448707669690..a8e617f9f2af 100644
--- a/drivers/gpu/drm/omapdrm/omap_plane.c
+++ b/drivers/gpu/drm/omapdrm/omap_plane.c
@@ -58,12 +58,11 @@ to_omap_plane_state(struct drm_plane_state *state)
         return container_of(state, struct omap_plane_state, base);
 }
 
-static int omap_plane_setup(struct drm_plane *plane)
+static void omap_plane_setup(struct drm_plane *plane)
 {
         struct omap_plane *omap_plane = to_omap_plane(plane);
         struct drm_plane_state *state = plane->state;
         struct omap_plane_state *omap_state = to_omap_plane_state(state);
-        struct drm_device *dev = plane->dev;
         struct omap_overlay_info info;
         struct omap_drm_window win;
         int ret;
@@ -72,7 +71,7 @@ static int omap_plane_setup(struct drm_plane *plane)
 
         if (!state->crtc) {
                 dispc_ovl_enable(omap_plane->id, false);
-                return 0;
+                return;
         }
 
         memset(&info, 0, sizeof(info));
@@ -123,14 +122,10 @@ static int omap_plane_setup(struct drm_plane *plane)
         /* and finally, update omapdss: */
         ret = dispc_ovl_setup(omap_plane->id, &info, false,
                               omap_crtc_timings(state->crtc), false);
-        if (ret) {
-                dev_err(dev->dev, "dispc_ovl_setup failed: %d\n", ret);
-                return ret;
-        }
+        if (WARN_ON(ret))
+                return;
 
         dispc_ovl_enable(omap_plane->id, true);
-
-        return 0;
 }
 
 static int omap_plane_prepare_fb(struct drm_plane *plane,