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net: dsa: mv88e6xxx: mask apparently non-existing phys during probing 

To avoid excessive mdio bus transactions during probing, mask all phy
addresses that do not exist (there is a 1:1 mapping between switch port
number and phy address).

Suggested-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Klaus Kudielka <klaus.kudielka@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Klaus Kudielka 2023-03-15 17:38:46 +01:00 committed by Jakub Kicinski
parent 2cb0658d4f
commit 2c7e46edbd
1 changed files with 1 additions and 0 deletions
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drivers/net/dsa/mv88e6xxx/chip.c
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@ -3805,6 +3805,7 @@ static int mv88e6xxx_mdio_register(struct mv88e6xxx_chip *chip,
bus->read_c45 = mv88e6xxx_mdio_read_c45;
bus->write_c45 = mv88e6xxx_mdio_write_c45;
bus->parent = chip->dev;
bus->phy_mask = GENMASK(31, mv88e6xxx_num_ports(chip));
if (!external) {
err = mv88e6xxx_g2_irq_mdio_setup(chip, bus);