[PATCH][RESEND] PHY: Add the phy_device_release device method.

[Thierry Reding <thierry.reding@avionic-design.de>]

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In cases where more than a single PHY is found on the MDIO bus, the kernel
will print a warning that this method is missing for each PHY device that
is not attached to a networking device.

Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
---
 drivers/net/phy/mdio_bus.c |   19 ++++++++++++++++++-
 1 files changed, 18 insertions(+), 1 deletions(-)

diff --git a/drivers/net/phy/mdio_bus.c b/drivers/net/phy/mdio_bus.c
index fc2f0e6..cb7fb47 100644
--- a/drivers/net/phy/mdio_bus.c
+++ b/drivers/net/phy/mdio_bus.c
@@ -36,6 +36,23 @@
 #include <asm/uaccess.h>
 
 /**
+ * phy_device_release - free a phy_device structure when all users of it are
+ * 	finished.
+ *
+ * @dev: device that's been disconnected
+ *
+ * Will be called only by the device core when all users of this phy_device
+ * are done.
+ */
+static void phy_device_release(struct device *dev)
+{
+	struct phy_device *phy;
+
+	phy = to_phy_device(dev);
+	kfree(phy);
+}
+
+/**
  * mdiobus_register - bring up all the PHYs on a given bus and attach them to bus
  * @bus: target mii_bus
  *
@@ -83,6 +100,7 @@ int mdiobus_register(struct mii_bus *bus)
 		if (phydev) {
 			phydev->irq = bus->irq[i];
 
+			phydev->dev.release = phy_device_release;
 			phydev->dev.parent = bus->dev;
 			phydev->dev.bus = &mdio_bus_type;
 			snprintf(phydev->dev.bus_id, BUS_ID_SIZE, PHY_ID_FMT, bus->id, i);
@@ -112,7 +130,6 @@ void mdiobus_unregister(struct mii_bus *bus)
 	for (i = 0; i < PHY_MAX_ADDR; i++) {
 		if (bus->phy_map[i]) {
 			device_unregister(&bus->phy_map[i]->dev);
-			kfree(bus->phy_map[i]);
 		}
 	}
 }

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