diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index 78feda9..e38cfe7 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -1484,7 +1484,7 @@
 
 struct block_device_operations {
 	int (*open) (struct block_device *, fmode_t);
-	int (*release) (struct gendisk *, fmode_t);
+	void (*release) (struct gendisk *, fmode_t);
 	int (*ioctl) (struct block_device *, fmode_t, unsigned, unsigned long);
 	int (*compat_ioctl) (struct block_device *, fmode_t, unsigned, unsigned long);
 	int (*direct_access) (struct block_device *, sector_t,