Re: [RFC PATCH net-next v3 20/20] net: phy: add qca8k driver for qca8k switch internal PHY
From: Andrew Lunn <andrew@lunn.ch>
Date: 2021-05-05 01:11:43
Also in:
lkml
+/* 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