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Date: Wed, 5 May 2021 03:11:36 +0200
From: Andrew Lunn <andrew@...n.ch>
To: Ansuel Smith <ansuelsmth@...il.com>
Cc: Florian Fainelli <f.fainelli@...il.com>,
Heiner Kallweit <hkallweit1@...il.com>,
Russell King <linux@...linux.org.uk>,
"David S. Miller" <davem@...emloft.net>,
Jakub Kicinski <kuba@...nel.org>, linux-kernel@...r.kernel.org,
netdev@...r.kernel.org
Subject: Re: [RFC PATCH net-next v3 20/20] net: phy: add qca8k driver for
qca8k switch internal PHY
> +/* QCA specific MII registers access function */
> +static void qca8k_phy_dbg_write(struct mii_bus *bus, int phy_addr, u16 dbg_addr, u16 dbg_data)
> +{
> + mutex_lock_nested(&bus->mdio_lock, MDIO_MUTEX_NESTED);
> + bus->write(bus, phy_addr, MII_ATH_DBG_ADDR, dbg_addr);
> + bus->write(bus, phy_addr, MII_ATH_DBG_DATA, dbg_data);
> + mutex_unlock(&bus->mdio_lock);
> +}
What are you locking against here?
Andrew
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