drm/radeon: use container_of to resolve radeon_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/radeon/radeon_fb.c b/drivers/gpu/drm/radeon/radeon_fb.c
index 94b0f2aa3d7c..0ea1db83d573 100644
--- a/drivers/gpu/drm/radeon/radeon_fb.c
+++ b/drivers/gpu/drm/radeon/radeon_fb.c
@@ -189,7 +189,8 @@ out_unref:
 static int radeonfb_create(struct drm_fb_helper *helper,
                            struct drm_fb_helper_surface_size *sizes)
 {
-        struct radeon_fbdev *rfbdev = (struct radeon_fbdev *)helper;
+        struct radeon_fbdev *rfbdev =
+                container_of(helper, struct radeon_fbdev, helper);
         struct radeon_device *rdev = rfbdev->rdev;
         struct fb_info *info;
         struct drm_framebuffer *fb = NULL;