diff options
| author | Florian Fainelli <f.fainelli@gmail.com> | 2017-05-25 09:21:41 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-05-26 14:37:40 -0400 |
| commit | 5568363f0cb358305b90ab3d3330f757943f6d0d (patch) | |
| tree | 5ce5fec84fd49a6537238a6ea7b7cdcb63943455 | |
| parent | 9226976f9bad60e3eeb36a9d69341a584c87a0c3 (diff) | |
net: phy: Create sysfs reciprocal links for attached_dev/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>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | drivers/net/phy/phy_device.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/net/phy/phy_device.c b/drivers/net/phy/phy_device.c index 0780e9f9e167..f84414b8f2ee 100644 --- a/drivers/net/phy/phy_device.c +++ b/drivers/net/phy/phy_device.c @@ -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); |