Have the MDIO bus driver code allocate a private structure and make the chip a member of it. This will allow us to add further members in the future.
Signed-off-by: Andrew Lunn <[email protected]> --- drivers/net/dsa/mv88e6xxx/chip.c | 13 +++++++++---- drivers/net/dsa/mv88e6xxx/mv88e6xxx.h | 4 ++++ 2 files changed, 13 insertions(+), 4 deletions(-) diff --git a/drivers/net/dsa/mv88e6xxx/chip.c b/drivers/net/dsa/mv88e6xxx/chip.c index dedccf201452..b0fd1432f4f3 100644 --- a/drivers/net/dsa/mv88e6xxx/chip.c +++ b/drivers/net/dsa/mv88e6xxx/chip.c @@ -2902,7 +2902,8 @@ static int mv88e6xxx_set_addr(struct dsa_switch *ds, u8 *addr) static int mv88e6xxx_mdio_read(struct mii_bus *bus, int phy, int reg) { - struct mv88e6xxx_chip *chip = bus->priv; + struct mv88e6xxx_mdio_bus *mdio_bus = bus->priv; + struct mv88e6xxx_chip *chip = mdio_bus->chip; u16 val; int err; @@ -2921,7 +2922,8 @@ static int mv88e6xxx_mdio_read(struct mii_bus *bus, int phy, int reg) static int mv88e6xxx_mdio_write(struct mii_bus *bus, int phy, int reg, u16 val) { - struct mv88e6xxx_chip *chip = bus->priv; + struct mv88e6xxx_mdio_bus *mdio_bus = bus->priv; + struct mv88e6xxx_chip *chip = mdio_bus->chip; int err; if (phy >= mv88e6xxx_num_ports(chip)) @@ -2941,17 +2943,20 @@ static int mv88e6xxx_mdio_register(struct mv88e6xxx_chip *chip, struct device_node *np) { static int index; + struct mv88e6xxx_mdio_bus *mdio_bus; struct mii_bus *bus; int err; if (np) chip->mdio_np = of_get_child_by_name(np, "mdio"); - bus = devm_mdiobus_alloc(chip->dev); + bus = devm_mdiobus_alloc_size(chip->dev, sizeof(*mdio_bus)); if (!bus) return -ENOMEM; - bus->priv = (void *)chip; + mdio_bus = bus->priv; + mdio_bus->chip = chip; + if (np) { bus->name = np->full_name; snprintf(bus->id, MII_BUS_ID_SIZE, "%s", np->full_name); diff --git a/drivers/net/dsa/mv88e6xxx/mv88e6xxx.h b/drivers/net/dsa/mv88e6xxx/mv88e6xxx.h index 7d75dd546bf7..6f7ddb594809 100644 --- a/drivers/net/dsa/mv88e6xxx/mv88e6xxx.h +++ b/drivers/net/dsa/mv88e6xxx/mv88e6xxx.h @@ -750,6 +750,10 @@ struct mv88e6xxx_bus_ops { int (*write)(struct mv88e6xxx_chip *chip, int addr, int reg, u16 val); }; +struct mv88e6xxx_mdio_bus { + struct mv88e6xxx_chip *chip; +}; + struct mv88e6xxx_ops { int (*get_eeprom)(struct mv88e6xxx_chip *chip, struct ethtool_eeprom *eeprom, u8 *data); -- 2.11.0
