[PATCH 1/2] mdiobus: return existing phydev in mdiobus_scan

[Sascha Hauer]

Test if we already found a phy device on an address earlier and return
it if it exists. This makes it possible to call mdiobus_scan multiple
times.

Signed-off-by: Sascha Hauer <s.hauer at pengutronix.de>
---
 drivers/net/phy/mdio_bus.c |    3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/net/phy/mdio_bus.c b/drivers/net/phy/mdio_bus.c
index b49f714..5025e3f 100644
--- a/drivers/net/phy/mdio_bus.c
+++ b/drivers/net/phy/mdio_bus.c
@@ -101,6 +101,9 @@ struct phy_device *mdiobus_scan(struct mii_bus *bus, int addr)
 {
 	struct phy_device *phydev;
 
+	if (bus->phy_map[addr])
+		return bus->phy_map[addr];
+
 	phydev = get_phy_device(bus, addr);
 	if (IS_ERR(phydev) || phydev == NULL)
 		return phydev;
-- 
1.7.10.4