linux-kernel - Re: [BUG/RFC PATCH 3/5] [BUG][RFC] media: atomisp: pci: add NULL check for asd obtained from atomisp_video

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Date:   Tue, 2 Nov 2021 16:02:45 +0300
From:   Dan Carpenter <dan.carpenter@...cle.com>
To:     Tsuchiya Yuto <kitakar@...il.com>
Cc:     Hans de Goede <hdegoede@...hat.com>,
        Patrik Gfeller <patrik.gfeller@...il.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Sakari Ailus <sakari.ailus@...ux.intel.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Hans Verkuil <hverkuil-cisco@...all.nl>,
        Kaixu Xia <kaixuxia@...cent.com>,
        Laurent Pinchart <laurent.pinchart@...asonboard.com>,
        Yang Li <abaci-bugfix@...ux.alibaba.com>,
        Tomi Valkeinen <tomi.valkeinen@...asonboard.com>,
        Alex Dewar <alex.dewar90@...il.com>,
        Aline Santana Cordeiro <alinesantanacordeiro@...il.com>,
        Arnd Bergmann <arnd@...db.de>, Alan <alan@...ux.intel.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...nel.org>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        linux-media@...r.kernel.org, linux-staging@...ts.linux.dev,
        linux-kernel@...r.kernel.org
Subject: Re: [BUG/RFC PATCH 3/5] [BUG][RFC] media: atomisp: pci: add NULL
 check for asd obtained from atomisp_video_pipe

On Mon, Oct 18, 2021 at 01:23:34AM +0900, Tsuchiya Yuto wrote:
> diff --git a/drivers/staging/media/atomisp/pci/atomisp_cmd.c b/drivers/staging/media/atomisp/pci/atomisp_cmd.c
> index 366161cff560..7206d29ba263 100644
> --- a/drivers/staging/media/atomisp/pci/atomisp_cmd.c
> +++ b/drivers/staging/media/atomisp/pci/atomisp_cmd.c
> @@ -1715,6 +1715,12 @@ void atomisp_wdt_refresh_pipe(struct atomisp_video_pipe *pipe,
>  {
>  	unsigned long next;
>  
> +	if(!pipe->asd) {

Run your patches through scripts/checkpatch.pl.

> +		dev_err(pipe->isp->dev, "%s(): asd is NULL, device is %s\n",
> +			__func__, pipe->vdev.name);
> +		return;
> +	}

regards,
dan carpenter