[PATCH] drm: via: fix sparse warnings

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Dave Airlie <airlied@linux.ie>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/drivers/char/drm/via_drm.h b/drivers/char/drm/via_drm.h
index 4588c9b..be346bb 100644
--- a/drivers/char/drm/via_drm.h
+++ b/drivers/char/drm/via_drm.h
@@ -158,7 +158,7 @@
 } drm_via_dma_init_t;
 
 typedef struct _drm_via_cmdbuffer {
-	char *buf;
+	char __user *buf;
 	unsigned long size;
 } drm_via_cmdbuffer_t;