linux-kernel - Re: [PATCH] kdb: kdb_support: mark expected switch fall-throughs

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Message-ID: <4b9d2140-7e9b-82a1-ebbb-fa66a513087a@linaro.org>
Date:   Wed, 15 Aug 2018 15:34:53 +0100
From:   Daniel Thompson <daniel.thompson@...aro.org>
To:     "Gustavo A. R. Silva" <gustavo@...eddedor.com>,
        Jason Wessel <jason.wessel@...driver.com>
Cc:     kgdb-bugreport@...ts.sourceforge.net, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] kdb: kdb_support: mark expected switch fall-throughs

On 05/08/18 03:48, 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 <gustavo@...eddedor.com>

Reviewed-by: Daniel Thompson <daniel.thompson@...aro.org>


> ---
>   kernel/debug/kdb/kdb_support.c | 6 +++---
>   1 file changed, 3 insertions(+), 3 deletions(-)
> 
> diff --git a/kernel/debug/kdb/kdb_support.c b/kernel/debug/kdb/kdb_support.c
> index 990b3cc..89ac604 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);
>