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| author | Guenter Roeck <linux@roeck-us.net> | 2015-02-16 21:23:51 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2015-02-17 10:37:39 -0800 |
| commit | 19334920eaf7df3f69950b040ede6c7598425a5b (patch) | |
| tree | 42c0b8a3df8bb7393c7e467f73feed8d6f7e722b /net | |
| parent | 7afb8886a05be68e376655539a064ec672de8a8e (diff) | |
| download | lwn-19334920eaf7df3f69950b040ede6c7598425a5b.tar.gz lwn-19334920eaf7df3f69950b040ede6c7598425a5b.zip | |
net: dsa: Set valid phy interface type
If the phy interface mode is not found in devicetree, or if devicetree
is not configured, of_get_phy_mode returns -ENODEV. The current code
sets the phy interface mode to the return value from of_get_phy_mode
without checking if it is valid.
This invalid phy interface mode is passed as parameter to of_phy_connect
or to phy_connect_direct. This sets the phy interface mode to the invalid
value, which in turn causes problems for any code using phydev->interface.
Fixes: b31f65fb4383 ("net: dsa: slave: Fix autoneg for phys on switch MDIO bus")
Fixes: 0d8bcdd383b8 ("net: dsa: allow for more complex PHY setups")
Cc: Florian Fainelli <f.fainelli@gmail.com>
Cc: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
| -rw-r--r-- | net/dsa/slave.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/net/dsa/slave.c b/net/dsa/slave.c index d104ae15836f..f23deadf42a0 100644 --- a/net/dsa/slave.c +++ b/net/dsa/slave.c @@ -521,10 +521,13 @@ static int dsa_slave_phy_setup(struct dsa_slave_priv *p, struct device_node *phy_dn, *port_dn; bool phy_is_fixed = false; u32 phy_flags = 0; - int ret; + int mode, ret; port_dn = cd->port_dn[p->port]; - p->phy_interface = of_get_phy_mode(port_dn); + mode = of_get_phy_mode(port_dn); + if (mode < 0) + mode = PHY_INTERFACE_MODE_NA; + p->phy_interface = mode; phy_dn = of_parse_phandle(port_dn, "phy-handle", 0); if (of_phy_is_fixed_link(port_dn)) { @@ -559,6 +562,8 @@ static int dsa_slave_phy_setup(struct dsa_slave_priv *p, if (!p->phy) return -ENODEV; + /* Use already configured phy mode */ + p->phy_interface = p->phy->interface; phy_connect_direct(slave_dev, p->phy, dsa_slave_adjust_link, p->phy_interface); } else { |