linux-kernel - Re: [PATCH] mmc: atmel-mci: Mark expected switch fall-throughs

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Message-ID: <CAPDyKFo9UjyiCrWpB2Xid=tWdZ3GUgdO7pnzrZ4JEKm7nPZAww@mail.gmail.com>
Date:   Fri, 2 Aug 2019 17:16:22 +0200
From:   Ulf Hansson <ulf.hansson@...aro.org>
To:     "Gustavo A. R. Silva" <gustavo@...eddedor.com>
Cc:     Ludovic Desroches <ludovic.desroches@...rochip.com>,
        Nicolas Ferre <nicolas.ferre@...rochip.com>,
        Alexandre Belloni <alexandre.belloni@...tlin.com>,
        "linux-mmc@...r.kernel.org" <linux-mmc@...r.kernel.org>,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Stephen Rothwell <sfr@...b.auug.org.au>,
        Kees Cook <keescook@...omium.org>
Subject: Re: [PATCH] mmc: atmel-mci: Mark expected switch fall-throughs

On Mon, 29 Jul 2019 at 02:01, Gustavo A. R. Silva
<gustavo@...eddedor.com> wrote:
>
> Mark switch cases where we are expecting to fall through.
>
> This patch fixes the following warnings:
>
> drivers/mmc/host/atmel-mci.c: In function 'atmci_get_cap':
> drivers/mmc/host/atmel-mci.c:2415:30: warning: this statement may fall through [-Wimplicit-fallthrough=]
>    host->caps.has_odd_clk_div = 1;
>    ~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~
> drivers/mmc/host/atmel-mci.c:2416:2: note: here
>   case 0x400:
>   ^~~~
> drivers/mmc/host/atmel-mci.c:2422:28: warning: this statement may fall through [-Wimplicit-fallthrough=]
>    host->caps.has_highspeed = 1;
>    ~~~~~~~~~~~~~~~~~~~~~~~~~^~~
> drivers/mmc/host/atmel-mci.c:2423:2: note: here
>   case 0x200:
>   ^~~~
> drivers/mmc/host/atmel-mci.c:2426:40: warning: this statement may fall through [-Wimplicit-fallthrough=]
>    host->caps.need_notbusy_for_read_ops = 1;
>    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~
> drivers/mmc/host/atmel-mci.c:2427:2: note: here
>   case 0x100:
>   ^~~~
>
> Reported-by: Stephen Rothwell <sfr@...b.auug.org.au>
> Signed-off-by: Gustavo A. R. Silva <gustavo@...eddedor.com>

Applied for next, thanks!

Kind regards
Uffe


> ---
>  drivers/mmc/host/atmel-mci.c | 4 ++++
>  1 file changed, 4 insertions(+)
>
> diff --git a/drivers/mmc/host/atmel-mci.c b/drivers/mmc/host/atmel-mci.c
> index 9ee0bc0ce6d0..c26fbe5f2222 100644
> --- a/drivers/mmc/host/atmel-mci.c
> +++ b/drivers/mmc/host/atmel-mci.c
> @@ -2413,6 +2413,7 @@ static void atmci_get_cap(struct atmel_mci *host)
>         case 0x600:
>         case 0x500:
>                 host->caps.has_odd_clk_div = 1;
> +               /* Fall through */
>         case 0x400:
>         case 0x300:
>                 host->caps.has_dma_conf_reg = 1;
> @@ -2420,13 +2421,16 @@ static void atmci_get_cap(struct atmel_mci *host)
>                 host->caps.has_cfg_reg = 1;
>                 host->caps.has_cstor_reg = 1;
>                 host->caps.has_highspeed = 1;
> +               /* Fall through */
>         case 0x200:
>                 host->caps.has_rwproof = 1;
>                 host->caps.need_blksz_mul_4 = 0;
>                 host->caps.need_notbusy_for_read_ops = 1;
> +               /* Fall through */
>         case 0x100:
>                 host->caps.has_bad_data_ordering = 0;
>                 host->caps.need_reset_after_xfer = 0;
> +               /* Fall through */
>         case 0x0:
>                 break;
>         default:
> --
> 2.22.0
>