drm: Propagate error from drm_fb_helper_init().

The previous commit fixes the problem, these commits make sure we actually
fail properly if it happens again.

I've squashed the commits from Chris since they are all fixing one issue.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Dave Airlie <airlied@redhat.com>

1 files changed, 7 insertions, 1 deletions

diff --git a/drivers/gpu/drm/nouveau/nouveau_fbcon.c b/drivers/gpu/drm/nouveau/nouveau_fbcon.c
index fd4a2df715e..c9a4a0d2a11 100644
--- a/drivers/gpu/drm/nouveau/nouveau_fbcon.c
+++ b/drivers/gpu/drm/nouveau/nouveau_fbcon.c
@@ -377,6 +377,7 @@ int nouveau_fbcon_init(struct drm_device *dev)
 {
         struct drm_nouveau_private *dev_priv = dev->dev_private;
         struct nouveau_fbdev *nfbdev;
+        int ret;
 
         nfbdev = kzalloc(sizeof(struct nouveau_fbdev), GFP_KERNEL);
         if (!nfbdev)
@@ -386,7 +387,12 @@ int nouveau_fbcon_init(struct drm_device *dev)
         dev_priv->nfbdev = nfbdev;
         nfbdev->helper.funcs = &nouveau_fbcon_helper_funcs;
 
-        drm_fb_helper_init(dev, &nfbdev->helper, 2, 4);
+        ret = drm_fb_helper_init(dev, &nfbdev->helper, 2, 4);
+        if (ret) {
+                kfree(nfbdev);
+                return ret;
+        }
+
         drm_fb_helper_single_add_all_connectors(&nfbdev->helper);
         drm_fb_helper_initial_config(&nfbdev->helper, 32);
         return 0;