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Message-Id: <1424150631-22396-1-git-send-email-linux@roeck-us.net> Date: Mon, 16 Feb 2015 21:23:51 -0800 From: Guenter Roeck <linux@...ck-us.net> To: "David S. Miller" <davem@...emloft.net> Cc: netdev@...r.kernel.org, Guenter Roeck <linux@...ck-us.net>, Florian Fainelli <f.fainelli@...il.com>, Andrew Lunn <andrew@...n.ch> Subject: [PATCH] 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@...il.com> Cc: Andrew Lunn <andrew@...n.ch> Signed-off-by: Guenter Roeck <linux@...ck-us.net> --- net/dsa/slave.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/net/dsa/slave.c b/net/dsa/slave.c index d104ae1..f23dead 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 { -- 2.1.0 -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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