netdev - RE: [PATCH 2/3 v2] net: phy: DP83822 initial driver submission

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Message-ID: <9235D6609DB808459E95D78E17F2E43D40B3F9A9@CHN-SV-EXMX02.mchp-main.com>
Date:   Wed, 4 Oct 2017 22:44:36 +0000
From:   <Woojung.Huh@...rochip.com>
To:     <dmurphy@...com>, <andrew@...n.ch>, <f.fainelli@...il.com>
CC:     <netdev@...r.kernel.org>, <afd@...com>
Subject: RE: [PATCH 2/3 v2] net: phy: DP83822 initial driver submission

> +static int dp83822_suspend(struct phy_device *phydev)
> +{
> +	int value;
> +
> +	mutex_lock(&phydev->lock);
> +	value = phy_read_mmd(phydev, DP83822_DEVADDR,
> MII_DP83822_WOL_CFG);
> +	mutex_unlock(&phydev->lock);
Would we need mutex to access phy_read_mmd()?
phy_read_mmd() has mdio_lock for indirect access.

> +	if (!(value & DP83822_WOL_EN))
> +		genphy_suspend(phydev);
> +
> +	return 0;
> +}
> +
> +static int dp83822_resume(struct phy_device *phydev)
> +{
> +	int value;
> +
> +	genphy_resume(phydev);
> +
> +	mutex_lock(&phydev->lock);
> +	value = phy_read_mmd(phydev, DP83822_DEVADDR,
> MII_DP83822_WOL_CFG);
> +
> +	phy_write_mmd(phydev, DP83822_DEVADDR,
> MII_DP83822_WOL_CFG, value |
> +		      DP83822_WOL_CLR_INDICATION);
> +
> +	mutex_unlock(&phydev->lock);
Same here.

Woojung