drm/gma500: use container_of to resolve psb_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/gma500/framebuffer.c b/drivers/gpu/drm/gma500/framebuffer.c
index d0dd3bea8aa5..ddd90ddbc200 100644
--- a/drivers/gpu/drm/gma500/framebuffer.c
+++ b/drivers/gpu/drm/gma500/framebuffer.c
@@ -540,7 +540,8 @@ static void psbfb_gamma_get(struct drm_crtc *crtc, u16 *red,
 static int psbfb_probe(struct drm_fb_helper *helper,
                                 struct drm_fb_helper_surface_size *sizes)
 {
-        struct psb_fbdev *psb_fbdev = (struct psb_fbdev *)helper;
+        struct psb_fbdev *psb_fbdev =
+                container_of(helper, struct psb_fbdev, psb_fb_helper);
         struct drm_device *dev = psb_fbdev->psb_fb_helper.dev;
         struct drm_psb_private *dev_priv = dev->dev_private;
         int bytespp;