[PATCH 2/5] drm/imx: imx-ldb: check return code on panel attach

[Lucas Stach]

Check the return code on panel attach. Avoids a kernel crash later
on if the attach failed.

Signed-off-by: Lucas Stach <l.stach at pengutronix.de>
---
 drivers/gpu/drm/imx/imx-ldb.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/imx/imx-ldb.c b/drivers/gpu/drm/imx/imx-ldb.c
index beff793bb717..48166df14042 100644
--- a/drivers/gpu/drm/imx/imx-ldb.c
+++ b/drivers/gpu/drm/imx/imx-ldb.c
@@ -427,8 +427,12 @@ static int imx_ldb_register(struct drm_device *drm,
        drm_connector_init(drm, &imx_ldb_ch->connector,
                           &imx_ldb_connector_funcs, DRM_MODE_CONNECTOR_LVDS);

-       if (imx_ldb_ch->panel)
-               drm_panel_attach(imx_ldb_ch->panel, &imx_ldb_ch->connector);
+       if (imx_ldb_ch->panel) {
+               ret = drm_panel_attach(imx_ldb_ch->panel,
+                                      &imx_ldb_ch->connector);
+               if (ret)
+                       return ret;
+       }

        drm_mode_connector_attach_encoder(&imx_ldb_ch->connector,
                        &imx_ldb_ch->encoder);
-- 
2.8.1