[PATCH 6/9 linux-next] drm/qxl: use container_of to resolve qxl_fbdev from drm_fb_helper

[Fabian Frederick <fabf@xxxxxxxxx>]

Use container_of instead of casting first structure member.

Signed-off-by: Fabian Frederick <fabf@xxxxxxxxx>
---
Compiled but untested.

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

diff --git a/drivers/gpu/drm/qxl/qxl_fb.c b/drivers/gpu/drm/qxl/qxl_fb.c
index df56788..3d7c1d0 100644
--- a/drivers/gpu/drm/qxl/qxl_fb.c
+++ b/drivers/gpu/drm/qxl/qxl_fb.c
@@ -625,7 +625,8 @@ static int qxl_fb_find_or_create_single(
 		struct drm_fb_helper *helper,
 		struct drm_fb_helper_surface_size *sizes)
 {
-	struct qxl_fbdev *qfbdev = (struct qxl_fbdev *)helper;
+	struct qxl_fbdev *qfbdev =
+		container_of(helper, struct qxl_fbdev, helper);
 	int new_fb = 0;
 	int ret;
 
-- 
1.9.1

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