2018-08-05 04:19:28

by Gustavo A. R. Silva

Subject: [PATCH] kdb: kdb_keyboard: 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 <[email protected]>
---
kernel/debug/kdb/kdb_keyboard.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/kernel/debug/kdb/kdb_keyboard.c b/kernel/debug/kdb/kdb_keyboard.c
index 118527a..750497b 100644
--- a/kernel/debug/kdb/kdb_keyboard.c
+++ b/kernel/debug/kdb/kdb_keyboard.c
@@ -173,11 +173,11 @@ int kdb_get_kbd_char(void)
case KT_LATIN:
if (isprint(keychar))
break; /* printable characters */
- /* drop through */
+ /* fall through */
case KT_SPEC:
if (keychar == K_ENTER)
break;
- /* drop through */
+ /* fall through */
default:
return -1; /* ignore unprintables */
}
--
2.7.4

2018-08-15 14:15:15

by Daniel Thompson

Subject: Re: [PATCH] kdb: kdb_keyboard: mark expected switch fall-throughs

On 05/08/18 05:18, Gustavo A. R. Silva wrote:
> 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 <[email protected]>

Reviewed-by: Daniel Thompson <[email protected]>

> ---
> kernel/debug/kdb/kdb_keyboard.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/kernel/debug/kdb/kdb_keyboard.c b/kernel/debug/kdb/kdb_keyboard.c
> index 118527a..750497b 100644
> --- a/kernel/debug/kdb/kdb_keyboard.c
> +++ b/kernel/debug/kdb/kdb_keyboard.c
> @@ -173,11 +173,11 @@ int kdb_get_kbd_char(void)
> case KT_LATIN:
> if (isprint(keychar))
> break; /* printable characters */
> - /* drop through */
> + /* fall through */
> case KT_SPEC:
> if (keychar == K_ENTER)
> break;
> - /* drop through */
> + /* fall through */
> default:
> return -1; /* ignore unprintables */
> }
>