linux-kernel - Re: [PATCH] fix ptr

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Date:   Tue, 21 Mar 2017 10:58:24 -0400
From:   Olimpiu Dejeu <olimpiu@...ticsand.com>
To:     kbuild test robot <lkp@...el.com>, fengguang.wu@...el.com
Cc:     kbuild-all@...org, Rob Herring <robh@...nel.org>,
        Lee Jones <lee.jones@...aro.org>, linux-kernel@...r.kernel.org,
        linux-fbdev@...r.kernel.org, devicetree@...r.kernel.org,
        jingoohan1@...il.com, Brian Dodge <bdodge@...ticsand.com>,
        joe@...ches.com, "Matthew D'Asaro" <medasaro@...ticsand.com>,
        Daniel Thompson <daniel.thompson@...aro.org>
Subject: Re: [PATCH] fix ptr_ret.cocci warnings

On Fri, Mar 17, 2017 at 10:48 AM, kbuild test robot <lkp@...el.com> wrote:
> drivers/video/backlight/arcxcnn_bl.c:183:1-3: 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
>
> CC: Olimpiu Dejeu <olimpiu@...ticsand.com>
> Signed-off-by: Fengguang Wu <fengguang.wu@...el.com>
> ---
>
>  arcxcnn_bl.c |    5 +----
>  1 file changed, 1 insertion(+), 4 deletions(-)
>
> --- a/drivers/video/backlight/arcxcnn_bl.c
> +++ b/drivers/video/backlight/arcxcnn_bl.c
> @@ -180,10 +180,7 @@ static int arcxcnn_backlight_register(st
>
>         lp->bl = devm_backlight_device_register(lp->dev, name, lp->dev, lp,
>                                        &arcxcnn_bl_ops, props);
> -       if (IS_ERR(lp->bl))
> -               return PTR_ERR(lp->bl);
> -
> -       return 0;
> +       return PTR_ERR_OR_ZERO(lp->bl);
>  }
>
>  static void arcxcnn_parse_dt(struct arcxcnn *lp)

Acked-by: Olimpiu Dejeu <olimpiu@...ticsand.com>