[PATCH 3/9 linux-next] drm/radeon: use container_of to resolve radeon_fbdev from drm_fb_helper

[Fabian Frederick]

Use container_of instead of casting first structure member.

Signed-off-by: Fabian Frederick <fabf at skynet.be>
---
Compiled but untested.

 drivers/gpu/drm/radeon/radeon_fb.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/radeon/radeon_fb.c 
b/drivers/gpu/drm/radeon/radeon_fb.c
index 94b0f2a..0ea1db8 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;
-- 
1.9.1