linux-kernel - Re: [PATCH] vcodec: mediatek: fix odd_ptr

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Message-ID: <1473225929.10038.0.camel@mtksdaap41>
Date:   Wed, 7 Sep 2016 13:25:29 +0800
From:   Tiffany Lin <tiffany.lin@...iatek.com>
To:     Julia Lawall <julia.lawall@...6.fr>
CC:     Hans Verkuil <hverkuil@...all.nl>,
        Mauro Carvalho Chehab <m.chehab@...sung.com>,
        <linux-media@...r.kernel.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-mediatek@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>, <kbuild-all@...org>
Subject: Re: [PATCH] vcodec: mediatek: fix odd_ptr_err.cocci warnings

On Tue, 2016-09-06 at 22:51 +0800, Julia Lawall wrote:
> PTR_ERR should access the value just tested by IS_ERR
> 
> Generated by: scripts/coccinelle/tests/odd_ptr_err.cocci
> 
> CC: Tiffany Lin <tiffany.lin@...iatek.com>
> Signed-off-by: Julia Lawall <julia.lawall@...6.fr>
> Signed-off-by: Fengguang Wu <fengguang.wu@...el.com>

Reviewed-by:Tiffany Lin <tiffany.lin@...iatek.com>

> ---
> 
>  mtk_vcodec_dec_drv.c |    2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> --- a/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_drv.c
> +++ b/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_drv.c
> @@ -255,7 +255,7 @@ static int mtk_vcodec_probe(struct platf
>  		}
>  		dev->reg_base[i] = devm_ioremap_resource(&pdev->dev, res);
>  		if (IS_ERR((__force void *)dev->reg_base[i])) {
> -			ret = PTR_ERR((__force void *)dev->reg_base);
> +			ret = PTR_ERR((__force void *)dev->reg_base[i]);
>  			goto err_res;
>  		}
>  		mtk_v4l2_debug(2, "reg[%d] base=%p", i, dev->reg_base[i]);