md.c: re-indent various 'switch' statements.

Intent was unnecessarily deep.

Also change one 'switch' which has a single case element, into an
'if'.
Signed-off-by: NeilBrown <neilb@suse.de>

drivers/md/md.c

@@ -6347,8 +6347,7 @@ static int md_ioctl(struct block_device *bdev, fmode_t mode,
 	 * Commands dealing with the RAID driver but not any
 	 * particular array:
 	 */
-	switch (cmd)
-	{
+	switch (cmd) {
 	case RAID_VERSION:
 		err = get_version(argp);
 		goto done;
@@ -6411,10 +6410,7 @@ static int md_ioctl(struct block_device *bdev, fmode_t mode,
 		goto abort;
 	}
 
-	switch (cmd)
-	{
-		case SET_ARRAY_INFO:
-			{
+	if (cmd == SET_ARRAY_INFO) {
 		mdu_array_info_t info;
 		if (!arg)
 			memset(&info, 0, sizeof(info));
@@ -6451,10 +6447,7 @@ static int md_ioctl(struct block_device *bdev, fmode_t mode,
 			       " array info. %d\n", err);
 			goto abort_unlock;
 		}
-			}
 		goto done_unlock;
-
-		default:;
 	}
 
 	/*
@@ -6473,8 +6466,7 @@ static int md_ioctl(struct block_device *bdev, fmode_t mode,
 	/*
 	 * Commands even a read-only array can execute:
 	 */
-	switch (cmd)
-	{
+	switch (cmd) {
 	case GET_BITMAP_FILE:
 		err = get_bitmap_file(mddev, argp);
 		goto done_unlock;
@@ -6540,8 +6532,7 @@ static int md_ioctl(struct block_device *bdev, fmode_t mode,
 		}
 	}
 
-	switch (cmd)
-	{
+	switch (cmd) {
 	case ADD_NEW_DISK:
 	{
 		mdu_disk_info_t info;