phy: fixed-phy: properly validate phy in fixed_phy_update_state()
authorRussell King <rmk+kernel@arm.linux.org.uk>
Thu, 24 Sep 2015 19:36:23 +0000 (20:36 +0100)
committerDavid S. Miller <davem@davemloft.net>
Fri, 25 Sep 2015 06:04:53 +0000 (23:04 -0700)
Validate that the phy_device passed into fixed_phy_update_state() is a
fixed-phy device before walking the list of phys for a fixed phy at the
same address.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
drivers/net/phy/fixed_phy.c

index fb1299c..e23bf5b 100644 (file)
@@ -220,7 +220,7 @@ int fixed_phy_update_state(struct phy_device *phydev,
        struct fixed_mdio_bus *fmb = &platform_fmb;
        struct fixed_phy *fp;
 
-       if (!phydev || !phydev->bus)
+       if (!phydev || phydev->bus != fmb->mii_bus)
                return -EINVAL;
 
        list_for_each_entry(fp, &fmb->phys, node) {