kdb: kdb_support: mark expected switch fall-throughs

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

Notice that in this particular case, I replaced the code comments with
a proper "fall through" annotation, which is what GCC is expecting
to find.

Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Reviewed-by: Daniel Thompson <daniel.thompson@linaro.org>
Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org>

1 files changed, 3 insertions, 3 deletions

diff --git a/kernel/debug/kdb/kdb_support.c b/kernel/debug/kdb/kdb_support.c
index b14b0925c184..50bf9b119bad 100644
--- a/kernel/debug/kdb/kdb_support.c
+++ b/kernel/debug/kdb/kdb_support.c
@@ -432,7 +432,7 @@ int kdb_getphysword(unsigned long *word, unsigned long addr, size_t size)
                                 *word = w8;
                         break;
                 }
-                /* drop through */
+                /* fall through */
         default:
                 diag = KDB_BADWIDTH;
                 kdb_printf("kdb_getphysword: bad width %ld\n", (long) size);
@@ -481,7 +481,7 @@ int kdb_getword(unsigned long *word, unsigned long addr, size_t size)
                                 *word = w8;
                         break;
                 }
-                /* drop through */
+                /* fall through */
         default:
                 diag = KDB_BADWIDTH;
                 kdb_printf("kdb_getword: bad width %ld\n", (long) size);
@@ -525,7 +525,7 @@ int kdb_putword(unsigned long addr, unsigned long word, size_t size)
                         diag = kdb_putarea(addr, w8);
                         break;
                 }
-                /* drop through */
+                /* fall through */
         default:
                 diag = KDB_BADWIDTH;
                 kdb_printf("kdb_putword: bad width %ld\n", (long) size);