linux-kernel - Re: [PATCH][next] ACPI: Fix fall-through warning for Clang

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Date:   Fri, 21 May 2021 19:05:48 +0200
From:   "Rafael J. Wysocki" <rafael@...nel.org>
To:     "Gustavo A. R. Silva" <gustavoars@...nel.org>
Cc:     "Rafael J. Wysocki" <rjw@...ysocki.net>,
        Len Brown <lenb@...nel.org>,
        ACPI Devel Maling List <linux-acpi@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        linux-hardening@...r.kernel.org
Subject: Re: [PATCH][next] ACPI: Fix fall-through warning for Clang

On Tue, May 18, 2021 at 1:22 AM Gustavo A. R. Silva
<gustavoars@...nel.org> wrote:
>
> In preparation to enable -Wimplicit-fallthrough for Clang, fix a
> fallthrough warning by simply dropping the empty default case at
> the bottom.
>
> This contributes to the ongoing efforts to globally enable
> -Wimplicit-fallthrough for Clang.
>
> Link: https://github.com/KSPP/linux/issues/115
> Suggested-by: Rafael J. Wysocki <rafael@...nel.org>
> Link: https://lore.kernel.org/lkml/CAJZ5v0hLYWKX__oZdcCY0D20pNqpw8SkiTPOCNOtpqe--QLp4Q@mail.gmail.com/
> Signed-off-by: Gustavo A. R. Silva <gustavoars@...nel.org>
> ---
>  drivers/acpi/sbshc.c | 1 -
>  1 file changed, 1 deletion(-)
>
> diff --git a/drivers/acpi/sbshc.c b/drivers/acpi/sbshc.c
> index 53c2862c4c75..5c021c3b81d9 100644
> --- a/drivers/acpi/sbshc.c
> +++ b/drivers/acpi/sbshc.c
> @@ -231,7 +231,6 @@ static int smbus_alarm(void *context)
>                 case ACPI_SBS_BATTERY:
>                         acpi_os_execute(OSL_NOTIFY_HANDLER,
>                                         acpi_smbus_callback, hc);
> -               default:;
>         }
>         mutex_unlock(&hc->lock);
>         return 0;
> --

Applied as 5.14 material, thanks!