mtd: lpddr_cmds: Mark expected switch fall-through

In preparation to enabling -Wimplicit-fallthrough, mark switch
cases where we are expecting to fall through.

This patch fixes the following warnings:

drivers/mtd/lpddr/lpddr_cmds.c: In function ‘chip_ready’:
drivers/mtd/lpddr/lpddr_cmds.c:319:6: warning: this statement may fall through [-Wimplicit-fallthrough=]
   if (mode == FL_READY && chip->oldstate == FL_READY)
      ^
drivers/mtd/lpddr/lpddr_cmds.c:322:2: note: here
  default:
  ^~~~~~~

Warning level 3 was used: -Wimplicit-fallthrough=3

This patch is part of the ongoing efforts to enabling
-Wimplicit-fallthrough.

Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Richard Weinberger <richard@nod.at>

1 files changed, 1 insertions, 0 deletions

diff --git a/drivers/mtd/lpddr/lpddr_cmds.c b/drivers/mtd/lpddr/lpddr_cmds.c
index b13557fe52bd..76a4c73e100e 100644
--- a/drivers/mtd/lpddr/lpddr_cmds.c
+++ b/drivers/mtd/lpddr/lpddr_cmds.c
@@ -318,6 +318,7 @@ static int chip_ready(struct map_info *map, struct flchip *chip, int mode)
                 /* Only if there's no operation suspended... */
                 if (mode == FL_READY && chip->oldstate == FL_READY)
                         return 0;
+                /* fall through */
 
         default:
 sleep: