@@ -960,6 +960,15 @@ int phy_attach_direct(struct net_device *dev, struct phy_device *phydev,
phydev->attached_dev = dev;
dev->phydev = phydev;
+ err = sysfs_create_link(&phydev->mdio.dev.kobj, &dev->dev.kobj,
+ "attached_dev");
+ if (err)
+ goto error;
+
+ err = sysfs_create_link(&dev->dev.kobj, &phydev->mdio.dev.kobj,
+ "phydev");
+ if (err)
+ goto error;
phydev->dev_flags = flags;
@@ -1050,6 +1059,8 @@ void phy_detach(struct phy_device *phydev)
struct mii_bus *bus;
int i;
+ sysfs_remove_link(&dev->dev.kobj, "phydev");
+ sysfs_remove_link(&phydev->mdio.dev.kobj, "attached_dev");
phydev->attached_dev->phydev = NULL;
phydev->attached_dev = NULL;
phy_suspend(phydev);
There is currently no way for a program scanning /sys to know whether a network device is attached to a particular PHY device, just like the PHY device is not pointed back to its attached network device. Create a symbolic link in the network device's namespace named "phydev" which points to the PHY device and create a symbolic link in the PHY device's namespace named "attached_dev" that points back to the network device. These links are set up during phy_attach_direct() and removed during phy_detach() for symetry. Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> --- drivers/net/phy/phy_device.c | 11 +++++++++++ 1 file changed, 11 insertions(+)