linux-kernel - Re: [Patch v3 1/3] media: ov5640: add PIXEL

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Date:   Mon, 7 Oct 2019 11:03:20 +0300
From:   Sakari Ailus <sakari.ailus@...ux.intel.com>
To:     Benoit Parrot <bparrot@...com>
Cc:     Hans Verkuil <hverkuil@...all.nl>,
        Jacopo Mondi <jacopo@...ndi.org>, linux-media@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [Patch v3 1/3] media: ov5640: add PIXEL_RATE control

On Fri, Oct 04, 2019 at 12:24:16PM -0500, Benoit Parrot wrote:
> @@ -2657,6 +2669,12 @@ static int ov5640_init_controls(struct ov5640_dev *sensor)
>  	/* we can use our own mutex for the ctrl lock */
>  	hdl->lock = &sensor->lock;
>  
> +	/* Clock related controls */
> +	ctrls->pixel_rate = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_PIXEL_RATE,
> +					      0, INT_MAX, 1,
> +					      ov5640_calc_pixel_rate(sensor));
> +	ctrls->pixel_rate->flags |= V4L2_CTRL_FLAG_READ_ONLY;

Please check ctrls->pixel_rate first; it may be NULL here.

> +
>  	/* Auto/manual white balance */
>  	ctrls->auto_wb = v4l2_ctrl_new_std(hdl, ops,
>  					   V4L2_CID_AUTO_WHITE_BALANCE,

-- 
Sakari Ailus
sakari.ailus@...ux.intel.com