[PATCH] drm/msm/mdp4: Add error handling in mdp4_lvds_connector_init()

[liuhaoran]

This patch adds error-handling for the drm_connector_init() and
drm_connector_attach_encoder inside the mdp4_lvds_connector_init().

Signed-off-by: liuhaoran <liuhaora...@163.com>
---
 .../gpu/drm/msm/disp/mdp4/mdp4_lvds_connector.c    | 14 +++++++++++---
 1 file changed, 11 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/msm/disp/mdp4/mdp4_lvds_connector.c 
b/drivers/gpu/drm/msm/disp/mdp4/mdp4_lvds_connector.c
index 7444b75c4215..62eb363ba90f 100644
--- a/drivers/gpu/drm/msm/disp/mdp4/mdp4_lvds_connector.c
+++ b/drivers/gpu/drm/msm/disp/mdp4/mdp4_lvds_connector.c
@@ -96,6 +96,7 @@ struct drm_connector *mdp4_lvds_connector_init(struct 
drm_device *dev,
 {
        struct drm_connector *connector = NULL;
        struct mdp4_lvds_connector *mdp4_lvds_connector;
+       int ret;
 
        mdp4_lvds_connector = kzalloc(sizeof(*mdp4_lvds_connector), GFP_KERNEL);
        if (!mdp4_lvds_connector)
@@ -106,8 +107,12 @@ struct drm_connector *mdp4_lvds_connector_init(struct 
drm_device *dev,
 
        connector = &mdp4_lvds_connector->base;
 
-       drm_connector_init(dev, connector, &mdp4_lvds_connector_funcs,
-                       DRM_MODE_CONNECTOR_LVDS);
+       ret = drm_connector_init(dev, connector, &mdp4_lvds_connector_funcs,
+                                DRM_MODE_CONNECTOR_LVDS);
+
+       if (ret)
+               return ret;
+
        drm_connector_helper_add(connector, &mdp4_lvds_connector_helper_funcs);
 
        connector->polled = 0;
@@ -115,7 +120,10 @@ struct drm_connector *mdp4_lvds_connector_init(struct 
drm_device *dev,
        connector->interlace_allowed = 0;
        connector->doublescan_allowed = 0;
 
-       drm_connector_attach_encoder(connector, encoder);
+       ret = drm_connector_attach_encoder(connector, encoder);
+
+       if (ret)
+               return ret;
 
        return connector;
 }
-- 
2.17.1