diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index f6bc0d0..2746632 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -644,7 +644,8 @@
 extern void blk_plug_device(request_queue_t *);
 extern int blk_remove_plug(request_queue_t *);
 extern void blk_recount_segments(request_queue_t *, struct bio *);
-extern int scsi_cmd_ioctl(struct file *, struct gendisk *, unsigned int, void __user *);
+extern int scsi_cmd_ioctl(struct file *, struct request_queue *,
+			  struct gendisk *, unsigned int, void __user *);
 extern int sg_scsi_ioctl(struct file *, struct request_queue *,
 		struct gendisk *, struct scsi_ioctl_command __user *);