linux-kernel - Re: [PATCH] mmc: block: propagate correct returned value in mmc_rpmb

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Message-ID: <CAPDyKFr2Bf_Ngtwp5pPU8Q956Ok4Ut8HLDsNxFvk-iU445Huvw@mail.gmail.com>
Date:   Mon, 21 May 2018 13:36:34 +0200
From:   Ulf Hansson <ulf.hansson@...aro.org>
To:     Mathieu Malaterre <malat@...ian.org>
Cc:     Linus Walleij <linus.walleij@...aro.org>,
        Adrian Hunter <adrian.hunter@...el.com>,
        Shawn Lin <shawn.lin@...k-chips.com>,
        Wolfram Sang <wsa+renesas@...g-engineering.com>,
        "linux-mmc@...r.kernel.org" <linux-mmc@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] mmc: block: propagate correct returned value in mmc_rpmb_ioctl

On 16 May 2018 at 21:20, Mathieu Malaterre <malat@...ian.org> wrote:
> In commit 97548575bef3 ("mmc: block: Convert RPMB to a character device") a
> new function `mmc_rpmb_ioctl` was added. The final return is simply
> returning a value of `0` instead of propagating the correct return code.
>
> Discovered during a compilation with W=1, silence the following gcc warning
>
>   drivers/mmc/core/block.c:2470:6: warning: variable ‘ret’ set but not used [-Wunused-but-set-variable]
>
> Signed-off-by: Mathieu Malaterre <malat@...ian.org>

Thanks, applied for fixes and by adding a stable tag!

Kind regards
Uffe

> ---
>  drivers/mmc/core/block.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/mmc/core/block.c b/drivers/mmc/core/block.c
> index 9e923cd1d80e..38a7586b00cc 100644
> --- a/drivers/mmc/core/block.c
> +++ b/drivers/mmc/core/block.c
> @@ -2485,7 +2485,7 @@ static long mmc_rpmb_ioctl(struct file *filp, unsigned int cmd,
>                 break;
>         }
>
> -       return 0;
> +       return ret;
>  }
>
>  #ifdef CONFIG_COMPAT
> --
> 2.11.0
>