linux-kernel - Re: [kbuild-all] [PATCH] nvmem: meson-efuse: fix ptr_ret.cocci warnings

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Date:   Sun, 4 Mar 2018 15:00:37 -0300
From:   Fabio Estevam <festevam@...il.com>
To:     kbuild test robot <lkp@...el.com>
Cc:     Andrey Smirnov <andrew.smirnov@...il.com>,
        "moderated list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE" 
        <linux-arm-kernel@...ts.infradead.org>,
        Heiko Stuebner <heiko@...ech.de>,
        linux-rockchip@...ts.infradead.org,
        Kevin Hilman <khilman@...libre.com>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        Masahiro Yamada <yamada.masahiro@...ionext.com>,
        Srinivas Kandagatla <srinivas.kandagatla@...aro.org>,
        kbuild-all@...org, linux-amlogic@...ts.infradead.org,
        Carlo Caione <carlo@...one.org>,
        linux-mediatek@...ts.infradead.org,
        Chris Healy <cphealy@...il.com>,
        Matthias Brugger <matthias.bgg@...il.com>
Subject: Re: [kbuild-all] [PATCH] nvmem: meson-efuse: fix ptr_ret.cocci warnings

On Sun, Mar 4, 2018 at 2:56 PM, kbuild test robot <lkp@...el.com> wrote:
> From: Fengguang Wu <fengguang.wu@...el.com>
>
> drivers/nvmem/meson-efuse.c:64:1-3: WARNING: PTR_ERR_OR_ZERO can be used
>
>
>  Use PTR_ERR_OR_ZERO rather than if(IS_ERR(...)) + PTR_ERR
>
> Generated by: scripts/coccinelle/api/ptr_ret.cocci
>
> Fixes: 0d4f662ed6ff ("nvmem: meson-efuse: Do no gate COMPILE_TEST with MESON_SM")

Original code was fine.

This is more of a style preference, so I don't think it deserves a Fixes tag.

> CC: Andrey Smirnov <andrew.smirnov@...il.com>
> Signed-off-by: Fengguang Wu <fengguang.wu@...el.com>
> ---
>
>  meson-efuse.c |    5 +----
>  1 file changed, 1 insertion(+), 4 deletions(-)
>
> --- a/drivers/nvmem/meson-efuse.c
> +++ b/drivers/nvmem/meson-efuse.c
> @@ -61,10 +61,7 @@ static int meson_efuse_probe(struct plat
>         econfig.size = size;
>
>         nvmem = devm_nvmem_register(&pdev->dev, &econfig);
> -       if (IS_ERR(nvmem))
> -               return PTR_ERR(nvmem);
> -
> -       return 0;
> +       return PTR_ERR_OR_ZERO(nvmem);
>  }
>
>  static struct platform_driver meson_efuse_driver = {
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