WorkStruct: make allyesconfig

Fix up for make allyesconfig.

Signed-Off-By: David Howells <dhowells@redhat.com>
diff --git a/drivers/char/drm/via_dmablit.c b/drivers/char/drm/via_dmablit.c
index 60c1695..806f9ce 100644
--- a/drivers/char/drm/via_dmablit.c
+++ b/drivers/char/drm/via_dmablit.c
@@ -500,9 +500,9 @@
 
 
 static void 
-via_dmablit_workqueue(void *data)
+via_dmablit_workqueue(struct work_struct *work)
 {
-	drm_via_blitq_t *blitq = (drm_via_blitq_t *) data;
+	drm_via_blitq_t *blitq = container_of(work, drm_via_blitq_t, wq);
 	drm_device_t *dev = blitq->dev;
 	unsigned long irqsave;
 	drm_via_sg_info_t *cur_sg;
@@ -571,7 +571,7 @@
 			DRM_INIT_WAITQUEUE(blitq->blit_queue + j);
 		}
 		DRM_INIT_WAITQUEUE(&blitq->busy_queue);
-		INIT_WORK(&blitq->wq, via_dmablit_workqueue, blitq);
+		INIT_WORK(&blitq->wq, via_dmablit_workqueue);
 		init_timer(&blitq->poll_timer);
 		blitq->poll_timer.function = &via_dmablit_timer;
 		blitq->poll_timer.data = (unsigned long) blitq;