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authorJohan Hovold <johan@kernel.org>2016-11-28 21:24:54 +0300
committerDavid S. Miller <davem@davemloft.net>2016-11-30 07:17:02 +0300
commit0d8f3c67151faaa80e332c254372dca58fb2a9d4 (patch)
treef9a76fd26ee475b2258df059c386abb80099f089 /net
parenta510887824171ad260cc4a2603396c6247fdd091 (diff)
downloadlinux-0d8f3c67151faaa80e332c254372dca58fb2a9d4.tar.xz
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: 0d8bcdd383b8 ("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>
Diffstat (limited to 'net')
-rw-r--r--net/dsa/slave.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/net/dsa/slave.c b/net/dsa/slave.c
index 6b1282c006b1..2a5c20a13fe4 100644
--- a/net/dsa/slave.c
+++ b/net/dsa/slave.c
@@ -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)