]> git.proxmox.com Git - mirror_ubuntu-eoan-kernel.git/commit
net: phy: allow scanning busses with missing phys
authorAlexandre Belloni <alexandre.belloni@bootlin.com>
Tue, 24 Apr 2018 16:09:04 +0000 (18:09 +0200)
committerDavid S. Miller <davem@davemloft.net>
Wed, 25 Apr 2018 16:59:42 +0000 (12:59 -0400)
commit02a6efcab675fe32815d824837784c3f42a7d892
treeee3c114159c833e170a405be27cf86b44b34396c
parent3be4aaf4e2d3eb95cce7835e8df797ae65ae5ac1
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>
drivers/net/phy/phy_device.c