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net: dsa: slave: fix of-node leak and phy priority 

Make sure to drop the reference taken by of_parse_phandle() before
returning from dsa_slave_phy_setup().

Note that this also modifies the PHY priority so that any fixed-link
node is only parsed when no phy-handle is given, which is in accordance
with the common scheme for this.

Fixes: 0d8bcdd383 ("net: dsa: allow for more complex PHY setups")
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Johan Hovold 2016-11-28 19:24:54 +01:00 committed by David S. Miller
parent a510887824
commit 0d8f3c6715
1 changed files with 5 additions and 2 deletions
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7
net/dsa/slave.c
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@ -1125,7 +1125,7 @@ static int dsa_slave_phy_setup(struct dsa_slave_priv *p,
p->phy_interface = mode;
phy_dn = of_parse_phandle(port_dn, "phy-handle", 0);
if (of_phy_is_fixed_link(port_dn)) {
if (!phy_dn && of_phy_is_fixed_link(port_dn)) {
/* In the case of a fixed PHY, the DT node associated
* to the fixed PHY is the Port DT node
*/
@ -1135,7 +1135,7 @@ static int dsa_slave_phy_setup(struct dsa_slave_priv *p,
return ret;
}
phy_is_fixed = true;
phy_dn = port_dn;
phy_dn = of_node_get(port_dn);
}
if (ds->ops->get_phy_flags)
@ -1154,6 +1154,7 @@ static int dsa_slave_phy_setup(struct dsa_slave_priv *p,
ret = dsa_slave_phy_connect(p, slave_dev, phy_id);
if (ret) {
netdev_err(slave_dev, "failed to connect to phy%d: %d\n", phy_id, ret);
of_node_put(phy_dn);
return ret;
}
} else {
@ -1162,6 +1163,8 @@ static int dsa_slave_phy_setup(struct dsa_slave_priv *p,
phy_flags,
p->phy_interface);
}
of_node_put(phy_dn);
}
if (p->phy && phy_is_fixed)