linux-kernel - Re: [PATCH 2/2] Bluetooth: Correctly annotate implicit fall through in __rfcomm_dlc

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Date:   Fri, 25 Jan 2019 09:09:38 +0100
From:   Mathieu Malaterre <malat@...ian.org>
To:     Marcel Holtmann <marcel@...tmann.org>
Cc:     Peter Hurley <peter@...leysoftware.com>,
        Johan Hedberg <johan.hedberg@...il.com>,
        "David S. Miller" <davem@...emloft.net>,
        linux-bluetooth@...r.kernel.org, netdev@...r.kernel.org,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 2/2] Bluetooth: Correctly annotate implicit fall through
 in __rfcomm_dlc_close

On Thu, Jan 24, 2019 at 7:07 PM Mathieu Malaterre <malat@...ian.org> wrote:
>
> There is a plan to build the kernel with -Wimplicit-fallthrough and
> this place in the code produced a warning (W=1).
>
> In this particular case put the fall through comment on a separate line so
> as to match the regular expression expected by GCC.
>
> This commit removes the following warning:
>
>   net/bluetooth/rfcomm/core.c:479:6: warning: this statement may fall through [-Wimplicit-fallthrough=]

Please discard, already fixed by :

6317950c1b9c Bluetooth: Mark expected switch fall-throughs

> Cc: Peter Hurley <peter@...leysoftware.com>
> Signed-off-by: Mathieu Malaterre <malat@...ian.org>
> ---
>  net/bluetooth/rfcomm/core.c | 5 ++---
>  1 file changed, 2 insertions(+), 3 deletions(-)
>
> diff --git a/net/bluetooth/rfcomm/core.c b/net/bluetooth/rfcomm/core.c
> index 1a635df80643..caaae6accafa 100644
> --- a/net/bluetooth/rfcomm/core.c
> +++ b/net/bluetooth/rfcomm/core.c
> @@ -480,9 +480,8 @@ static int __rfcomm_dlc_close(struct rfcomm_dlc *d, int err)
>                         __rfcomm_dlc_disconn(d);
>                         break;
>                 }
> -               /* if closing a dlc in a session that hasn't been started,
> -                * just close and unlink the dlc
> -                */
> +               /* fall through - if closing a dlc in a session that hasn't */
> +               /* been started, just close and unlink the dlc */
>
>         default:
>                 rfcomm_dlc_clear_timer(d);
> --
> 2.19.2
>