drm/nouveau: use container_of to resolve nouveau_fbdev from drm_fb_helper

Use container_of instead of casting first structure member.

Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/gpu/drm/nouveau/nouveau_fbcon.c b/drivers/gpu/drm/nouveau/nouveau_fbcon.c
index f0ae10ca3ba9..dc1753c368e3 100644
--- a/drivers/gpu/drm/nouveau/nouveau_fbcon.c
+++ b/drivers/gpu/drm/nouveau/nouveau_fbcon.c
@@ -308,7 +308,8 @@ static int
 nouveau_fbcon_create(struct drm_fb_helper *helper,
                      struct drm_fb_helper_surface_size *sizes)
 {
-        struct nouveau_fbdev *fbcon = (struct nouveau_fbdev *)helper;
+        struct nouveau_fbdev *fbcon =
+                container_of(helper, struct nouveau_fbdev, helper);
         struct drm_device *dev = fbcon->dev;
         struct nouveau_drm *drm = nouveau_drm(dev);
         struct nvif_device *device = &drm->device;