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Code Issues Releases Wiki Activity

net: of_mdio: fix behavior on missing phy device

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of_mdiobus_register creates a phy_device even if get_phy_device failed
to create it previously. This causes indefinite polling on non-existent
PHYs. This fix makes of_mdio_register rely on get_phy_device to
properly create the device or fail otherwise.

Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Sebastian Hesselbarth 2013-05-06 23:49:31 +00:00 committed by David S. Miller
parent 7b0c5f21f3
commit 058112c7ef
1 changed files with 4 additions and 7 deletions
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11
drivers/of/of_mdio.c
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@ -84,13 +84,10 @@ int of_mdiobus_register(struct mii_bus *mdio, struct device_node *np)
phy = get_phy_device(mdio, addr, is_c45);
if (!phy || IS_ERR(phy)) {
phy = phy_device_create(mdio, addr, 0, false, NULL);
if (!phy || IS_ERR(phy)) {
dev_err(&mdio->dev,
"error creating PHY at address %i\n",
addr);
continue;
}
dev_err(&mdio->dev,
"cannot get PHY at address %i\n",
addr);
continue;
}
/* Associate the OF node with the device structure so it