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stmmac: mdio register has to fail if the phy is not found

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With this patch the stmmac fails in case of the phy device
is not found; w/o this fix the mdio can be register twice when
do down/up the iface and this is not correct.

Reported-by: Stas <stsp@list.ru>
Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Giuseppe CAVALLARO 2013-02-06 20:47:52 +00:00 committed by David S. Miller
parent de53d55798
commit 3955b22b97
1 changed files with 7 additions and 3 deletions
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10
drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c
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@ -188,8 +188,6 @@ int stmmac_mdio_register(struct net_device *ndev)
goto bus_register_fail;
}
priv->mii = new_bus;
found = 0;
for (addr = 0; addr < PHY_MAX_ADDR; addr++) {
struct phy_device *phydev = new_bus->phy_map[addr];
@ -237,8 +235,14 @@ int stmmac_mdio_register(struct net_device *ndev)
}
}
if (!found)
if (!found) {
pr_warning("%s: No PHY found\n", ndev->name);
mdiobus_unregister(new_bus);
mdiobus_free(new_bus);
return -ENODEV;
}
priv->mii = new_bus;
return 0;