Export a phy_standalone device attribute that is meant to give the
indication that this PHY lacks an attached_dev and its corresponding
sysfs link. The attribute will be created only when the
phy_attach_direct() function will be called with a NULL net_device.
Signed-off-by: Ioana Ciornei <ioana.cior...@nxp.com>
---
drivers/net/phy/phy_device.c | 22 ++++++++++++++++++++++
1 file changed, 22 insertions(+)
diff --git a/drivers/net/phy/phy_device.c b/drivers/net/phy/phy_device.c
index 0b7730fd41ba..711971897e10 100644
--- a/drivers/net/phy/phy_device.c
+++ b/drivers/net/phy/phy_device.c
@@ -1164,6 +1164,16 @@ static void phy_sysfs_create_links(struct phy_device
*phydev)
phydev->sysfs_links = true;
}
+static ssize_t
+phy_standalone_show(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct phy_device *phydev = to_phy_device(dev);
+
+ return sprintf(buf, "%d\n", !phydev->attached_dev);
+}
+static DEVICE_ATTR_RO(phy_standalone);
+
/**
* phy_attach_direct - attach a network device to a given PHY device pointer
* @dev: network device to attach
@@ -1253,6 +1263,13 @@ int phy_attach_direct(struct net_device *dev, struct
phy_device *phydev,
phy_sysfs_create_links(phydev);
+ if (!phydev->attached_dev) {
+ err = sysfs_create_file(&phydev->mdio.dev.kobj,
+ &dev_attr_phy_standalone.attr);
+ if (err)
+ phydev_err(phydev, "error creating 'phy_standalone'
sysfs entry\n");
+ }
+
phydev->dev_flags = flags;
phydev->interface = interface;
@@ -1380,6 +1397,11 @@ void phy_detach(struct phy_device *phydev)
sysfs_remove_link(&dev->dev.kobj, "phydev");
sysfs_remove_link(&phydev->mdio.dev.kobj, "attached_dev");
}
+
+ if (!phydev->attached_dev)
+ sysfs_remove_file(&phydev->mdio.dev.kobj,
+ &dev_attr_phy_standalone.attr);
+
phy_suspend(phydev);
if (dev) {
phydev->attached_dev->phydev = NULL;
--
2.21.0
