linux-kernel - Re: [v1 2/3] media: ov8856: Add devicetree support

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Date:   Tue, 10 Mar 2020 16:26:52 +0200
From:   Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:     Robert Foss <robert.foss@...aro.org>
Cc:     ben.kao@...el.com, mchehab@...nel.org, robh+dt@...nel.org,
        mark.rutland@....com, matthias.bgg@...il.com, davem@...emloft.net,
        gregkh@...uxfoundation.org, Jonathan.Cameron@...wei.com,
        linux-media@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org,
        Dongchun Zhu <dongchun.zhu@...iatek.com>,
        Tomasz Figa <tfiga@...omium.org>
Subject: Re: [v1 2/3] media: ov8856: Add devicetree support

On Tue, Mar 10, 2020 at 02:46:02PM +0100, Robert Foss wrote:
> Add devicetree match table, and enable ov8856_probe()
> to initialize power, clocks and reset pins.

...

> +#define OV8856_NUM_SUPPLIES ARRAY_SIZE(ov8856_supply_names)

Use ARRAY_SIZE() directly.

Have you seen Sakari's comments?
Sakari, do I have déjà vu or you indeed commented this driver?

...

> +	gpiod_set_value_cansleep(ov8856->n_shutdn_gpio, GPIOD_OUT_LOW);

> +	gpiod_set_value_cansleep(ov8856->n_shutdn_gpio, GPIOD_OUT_HIGH);

Yes, seems this one is inverted.

...

> +{
> +	gpiod_set_value_cansleep(ov8856->n_shutdn_gpio, GPIOD_OUT_LOW);
> +	regulator_bulk_disable(OV8856_NUM_SUPPLIES, ov8856->supplies);
> +	clk_disable_unprepare(ov8856->xvclk);
> +}
> +
> +

One blank line is enough.

...

> +	ov8856->xvclk = devm_clk_get(&client->dev, "xvclk");
> +	if (IS_ERR(ov8856->xvclk)) {
> +		dev_err(&client->dev, "failed to get xvclk\n");
> +		return -EINVAL;
> +	}

Previously it worked without clock provider, now you make a dependency.

This won't work.


-- 
With Best Regards,
Andy Shevchenko