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Re: [PATCH v7 2/3] media: i2c: adv748x: add adv748x driver

From Sakari Ailus <sakari.ailus@iki.fi>
Newsgroups linux.kernel
Subject Re: [PATCH v7 2/3] media: i2c: adv748x: add adv748x driver
Date 2017-07-18 10:50 +0200
Message-ID <u4wmC-51-17@gated-at.bofh.it> (permalink)
References <u0cPv-3uf-17@gated-at.bofh.it> <u0cPw-3uf-23@gated-at.bofh.it>
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Hi Kieran,

A few more minor matters that you might want to address on top of Hans's
pull request.

On Thu, Jul 06, 2017 at 12:01:16PM +0100, Kieran Bingham wrote:
...
> +static int adv748x_afe_g_input_status(struct v4l2_subdev *sd, u32 *status)
> +{
> +	struct adv748x_afe *afe = adv748x_sd_to_afe(sd);
> +	struct adv748x_state *state = adv748x_afe_to_state(afe);
> +	int ret;
> +
> +	mutex_lock(&state->mutex);
> +
> +	ret = adv748x_afe_status(afe, status, NULL);
> +
> +	mutex_unlock(&state->mutex);

A newline here would be nice.

> +	return ret;
> +}

...

> +int adv748x_csi2_set_pixelrate(struct v4l2_subdev *sd, s64 rate)
> +{
> +	struct v4l2_ctrl *ctrl;
> +
> +	ctrl = v4l2_ctrl_find(sd->ctrl_handler, V4L2_CID_PIXEL_RATE);

It'd be much nicer to store the control pointer to your device's own struct
and use it. No need to look it up or check whether it was found.

> +	if (!ctrl)
> +		return -EINVAL;
> +
> +	return v4l2_ctrl_s_ctrl_int64(ctrl, rate);
> +}

-- 
Kind regards,

Sakari Ailus
e-mail: sakari.ailus@iki.fi	XMPP: sailus@retiisi.org.uk

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[PATCH v7 0/3] ADV748x HDMI/Analog video receiver Kieran Bingham <kbingham@kernel.org> - 2017-07-06 13:10 +0200
  Re: [PATCH v7 2/3] media: i2c: adv748x: add adv748x driver Sakari Ailus <sakari.ailus@iki.fi> - 2017-07-18 10:50 +0200

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