[PATCH 1/9 linux-next] drm/cirrus: use container_of to resolve cirrus_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/cirrus/cirrus_fbdev.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/cirrus/cirrus_fbdev.c 
b/drivers/gpu/drm/cirrus/cirrus_fbdev.c
index 2a135f2..d231b1c 100644
--- a/drivers/gpu/drm/cirrus/cirrus_fbdev.c
+++ b/drivers/gpu/drm/cirrus/cirrus_fbdev.c
@@ -160,7 +160,8 @@ static int cirrusfb_create_object(struct cirrus_fbdev 
*afbdev,
 static int cirrusfb_create(struct drm_fb_helper *helper,
                           struct drm_fb_helper_surface_size *sizes)
 {
-       struct cirrus_fbdev *gfbdev = (struct cirrus_fbdev *)helper;
+       struct cirrus_fbdev *gfbdev =
+               container_of(helper, struct cirrus_fbdev, helper);
        struct drm_device *dev = gfbdev->helper.dev;
        struct cirrus_device *cdev = gfbdev->helper.dev->dev_private;
        struct fb_info *info;
-- 
1.9.1