[PATCH 3.16 249/306] net: ethernet: ti: cpsw: fix mdio device reference leak

[Ben Hutchings]

3.16.40-rc1 review patch.  If anyone has any objections, please let me know.

------------------

From: Johan Hovold <johan@xxxxxxxxxx>

commit 86e1d5adcef961eb383ce4eacbe0ef22f06e2045 upstream.

Make sure to drop the reference taken by of_find_device_by_node() when
looking up an mdio device from a phy_id property during probe.

Fixes: 549985ee9c72 ("cpsw: simplify the setup of the register
pointers")
Signed-off-by: Johan Hovold <johan@xxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
[bwh: Backported to 3.16: adjust context, indentation]
Signed-off-by: Ben Hutchings <ben@xxxxxxxxxxxxxxx>
---
 drivers/net/ethernet/ti/cpsw.c | 1 +
 1 file changed, 1 insertion(+)

--- a/drivers/net/ethernet/ti/cpsw.c
+++ b/drivers/net/ethernet/ti/cpsw.c
@@ -1939,6 +1939,7 @@ static int cpsw_probe_dt(struct cpsw_pla
 		}
 		snprintf(slave_data->phy_id, sizeof(slave_data->phy_id),
 			 PHY_ID_FMT, mdio->name, phyid);
+		put_device(&mdio->dev);
 
 		mac_addr = of_get_mac_address(slave_node);
 		if (mac_addr)