diff --git a/drivers/md/md.c b/drivers/md/md.c
index bd1dc72ae522c87d6f1924141798d7ac732ef1ab..328e247e2bf5d9a3aa9f7c942dc52ed80fb45e8c 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -4186,15 +4186,12 @@ static int get_bitmap_file(mddev_t * mddev, void __user * arg)
 static int get_disk_info(mddev_t * mddev, void __user * arg)
 {
 	mdu_disk_info_t info;
-	unsigned int nr;
 	mdk_rdev_t *rdev;
 
 	if (copy_from_user(&info, arg, sizeof(info)))
 		return -EFAULT;
 
-	nr = info.number;
-
-	rdev = find_rdev_nr(mddev, nr);
+	rdev = find_rdev_nr(mddev, info.number);
 	if (rdev) {
 		info.major = MAJOR(rdev->bdev->bd_dev);
 		info.minor = MINOR(rdev->bdev->bd_dev);