Alexandre Belloni 02a6efcab6 net: phy: allow scanning busses with missing phys
Some MDIO busses will error out when trying to read a phy address with no
phy present at that address. In that case, probing the bus will fail
because __mdiobus_register() is scanning the bus for all possible phys
addresses.

In case MII_PHYSID1 returns -EIO or -ENODEV, consider there is no phy at
this address and set the phy ID to 0xffffffff which is then properly
handled in get_phy_device().

Suggested-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-04-25 12:59:42 -04:00
..
2017-08-06 20:55:28 -07:00
2017-08-06 20:55:28 -07:00
2018-01-08 14:30:28 -05:00
2018-03-29 14:30:41 -04:00