linux-kernel - Re: [PATCH] drm: xlnx: pl_disp: fix odd_ptr

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Message-ID: <27228734.4MQGdpQsxQ@avalon>
Date:   Wed, 25 Apr 2018 02:42:50 +0300
From:   Laurent Pinchart <laurent.pinchart@...asonboard.com>
To:     Julia Lawall <julia.lawall@...6.fr>
Cc:     Hyun Kwon <hyun.kwon@...inx.com>, Michal Simek <monstr@...str.eu>,
        David Airlie <airlied@...ux.ie>,
        dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, kbuild-all@...org
Subject: Re: [PATCH] drm: xlnx: pl_disp: fix odd_ptr_err.cocci warnings

Hi Julia,

Thank you for the patch.

On Tuesday, 10 April 2018 08:49:40 EEST Julia Lawall wrote:
> From: Fengguang Wu <fengguang.wu@...el.com>
> 
>  PTR_ERR should normally access the value just tested by IS_ERR
> 
> Generated by: scripts/coccinelle/tests/odd_ptr_err.cocci
> 
> Fixes: 742243a44a73 ("drm: xlnx: pl_disp: Use xlnx pipeline calls")
> CC: Hyun Kwon <hyun.kwon@...inx.com>
> Signed-off-by: Fengguang Wu <fengguang.wu@...el.com>
> Signed-off-by: Julia Lawall <julia.lawall@...6.fr>

Reviewed-by: Laurent Pinchart <laurent.pinchart@...asonboard.com>

Hyun, do you plan to take care of this patch ? I suppose you can squash it 
into the offending commit when upstreaming the driver.

> ---
> 
> tree:   https://github.com/Xilinx/linux-xlnx xlnx_rebase_v4.14
> head:   fe04d2ee0dfea6b5fdbb04f4f6dbcaa13bfd2fda
> commit: 742243a44a738b165f8da5cbdb6662139e85a5c5 [651/842] drm: xlnx:
> pl_disp: Use xlnx pipeline calls
> 
> 
>  xlnx_pl_disp.c |    2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> --- a/drivers/gpu/drm/xlnx/xlnx_pl_disp.c
> +++ b/drivers/gpu/drm/xlnx/xlnx_pl_disp.c
> @@ -482,7 +482,7 @@ static int xlnx_pl_disp_probe(struct pla
> 
>  	xlnx_pl_disp->master = xlnx_drm_pipeline_init(pdev);
>  	if (IS_ERR(xlnx_pl_disp->master)) {
> -		ret = PTR_ERR(xlnx_pl_disp->dev);
> +		ret = PTR_ERR(xlnx_pl_disp->master);
>  		dev_err(dev, "failed to initialize the drm pipeline\n");
>  		goto err_component;
>  	}

-- 
Regards,

Laurent Pinchart