[PATCH RESEND][next] mtd: mtdchar: Fix fall-through warnings for Clang

[Gustavo A. R. Silva]

In preparation to enable -Wimplicit-fallthrough for Clang, fix a warning
by explicitly adding a break statement instead of letting the code fall
through to the next case.

Link: https://github.com/KSPP/linux/issues/115
Signed-off-by: Gustavo A. R. Silva <gustavoars at kernel.org>
---
 drivers/mtd/mtdchar.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/mtd/mtdchar.c b/drivers/mtd/mtdchar.c
index 57c4a2f0b703..998d86f46488 100644
--- a/drivers/mtd/mtdchar.c
+++ b/drivers/mtd/mtdchar.c
@@ -983,6 +983,7 @@ static int mtdchar_ioctl(struct file *file, u_int cmd, u_long arg)
 			if (!mtd_has_oob(mtd))
 				return -EOPNOTSUPP;
 			mfi->mode = arg;
+			break;
 
 		case MTD_FILE_MODE_NORMAL:
 			break;
-- 
2.27.0