[PATCHv4 1/3] drm/imx: parallel-display: check return code from of_get_drm_display_mode()

[Lothar Waßmann]

of_get_drm_display_mode() may fail. Check its return code and bail out
on error.

Signed-off-by: Lothar Waßmann <LW at KARO-electronics.de>
---
 drivers/gpu/drm/imx/parallel-display.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/imx/parallel-display.c 
b/drivers/gpu/drm/imx/parallel-display.c
index 2d1fd02..4b2ec5d 100644
--- a/drivers/gpu/drm/imx/parallel-display.c
+++ b/drivers/gpu/drm/imx/parallel-display.c
@@ -69,10 +69,16 @@ static int imx_pd_connector_get_modes(struct drm_connector 
*connector)

        if (np) {
                struct drm_display_mode *mode = drm_mode_create(connector->dev);
+               int ret;

                if (!mode)
                        return -EINVAL;
-               of_get_drm_display_mode(np, &imxpd->mode, OF_USE_NATIVE_MODE);
+
+               ret = of_get_drm_display_mode(np, &imxpd->mode,
+                                             OF_USE_NATIVE_MODE);
+               if (ret)
+                       return ret;
+
                drm_mode_copy(mode, &imxpd->mode);
                mode->type |= DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED,
                drm_mode_probed_add(connector, mode);
-- 
2.1.4