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authorGiuseppe CAVALLARO <peppe.cavallaro@st.com>2013-02-06 20:47:52 +0000
committerDavid S. Miller <davem@davemloft.net>2013-02-10 20:12:10 -0500
commit3955b22b9798ae8694ac053614694695991f0a91 (patch)
treea46217f7ea13c2fcb4f9506a91663aadbbc4cb40 /drivers
parentde53d55798f44c6c95442ab839004b7272ab61dd (diff)
downloadlinaro-lsk-3955b22b9798ae8694ac053614694695991f0a91.tar.gz
stmmac: mdio register has to fail if the phy is not found
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>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c10
1 files changed, 7 insertions, 3 deletions
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c
index 0376a5e6b2b..0b9829fe3ee 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c
@@ -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;