linux-kernel - Re: [PATCH v2 2/2] usb: phy: Add USB3 PHY support for Intel LGM SoC

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Message-ID: <20200611081254.GR2428291@smile.fi.intel.com>
Date:   Thu, 11 Jun 2020 11:12:54 +0300
From:   Andy Shevchenko <andriy.shevchenko@...el.com>
To:     "Ramuthevar,Vadivel MuruganX" 
        <vadivel.muruganx.ramuthevar@...ux.intel.com>
Cc:     linux-kernel@...r.kernel.org, balbi@...nel.org,
        p.zabel@...gutronix.de, gregkh@...uxfoundation.org,
        robh@...nel.org, devicetree@...r.kernel.org,
        linux-usb@...r.kernel.org, cheol.yong.kim@...el.com,
        qi-ming.wu@...el.com, yin1.li@...el.com
Subject: Re: [PATCH v2 2/2] usb: phy: Add USB3 PHY support for Intel LGM SoC

On Thu, Jun 11, 2020 at 10:12:46AM +0800, Ramuthevar,Vadivel MuruganX wrote:
> From: Ramuthevar Vadivel Murugan <vadivel.muruganx.ramuthevar@...ux.intel.com>
> 
> Add support for USB PHY on Intel LGM SoC.

...

> +static int get_flipped(struct tca_apb *ta, bool *flipped)
> +{
> +	union extcon_property_value property;
> +	int ret;
> +
> +	ret = extcon_get_property(ta->phy.edev, EXTCON_USB_HOST,
> +				  EXTCON_PROP_USB_TYPEC_POLARITY, &property);
> +	if (ret) {
> +		dev_err(ta->phy.dev, "no polarity property from extcon\n");

> +		return false;

return ret;

> +	}
> +
> +	*flipped = property.intval;
> +

> +	return *flipped;

return 0;

> +}

...I suppose it should be as above.

...

> +	ret = readl_poll_timeout(ctrl1, val, val & SRAM_INIT_DONE,
> +				 10, 10 * 1000);

On one line easier to read.

> +	if (ret) {
> +		dev_err(ta->phy.dev, "SRAM init failed, 0x%x\n", val);
> +		return ret;
> +	}

...

> +static int phy_set_vbus(struct usb_phy *phy, int on)
> +{
> +	struct tca_apb *ta = container_of(phy, struct tca_apb, phy);

> +	int ret = 0;

Assignment is redundant.

> +
> +	if (on) {
> +		ret = regulator_enable(ta->vbus);
> +		if (ret)
> +			dev_err(ta->phy.dev, "regulator not enabled\n");
> +	} else {
> +		ret = regulator_disable(ta->vbus);
> +		if (ret)
> +			dev_err(ta->phy.dev, "regulator not disabled\n");
> +	}
> +
> +	return ret;
> +}

...

> +	ret = get_flipped(ta, &flipped);
> +	if (!ret)
> +		dev_err(ta->phy.dev, "no polarity property from extcon\n");

This should be fixed accordingly.

...

> +		dev_info(ta->phy.dev, "connected%s\n",
> +			 flipped ? " flipped" : "");

One line.

-- 
With Best Regards,
Andy Shevchenko