[PATCH 4.4 278/312] net: ethernet: ti: cpsw: fix device and of_node leaks

[PATCH 4.4 278/312] net: ethernet: ti: cpsw: fix device and of_node leaks

[Greg Kroah-Hartman]

From: Johan Hovold <johan@kernel.org>

commit c7262aaace1b17a650598063e3b9ee1785fde377 upstream.

Make sure to drop the references taken by of_get_child_by_name() and
bus_find_device() before returning from cpsw_phy_sel().

Note that holding a reference to the cpsw-phy-sel device does not
prevent the devres-managed private data from going away.

Fixes: 5892cd135e16 ("drivers: net: cpsw-phy-sel: Add new driver...")
Cc: Mugunthan V N <mugunthanvnm@ti.com>
Cc: Grygorii Strashko <grygorii.strashko@ti.com>
Cc: linux-omap@vger.kernel.org
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/net/ethernet/ti/cpsw-phy-sel.c |    3 +++
 1 file changed, 3 insertions(+)

--- a/drivers/net/ethernet/ti/cpsw-phy-sel.c
+++ b/drivers/net/ethernet/ti/cpsw-phy-sel.c
@@ -154,9 +154,12 @@ void cpsw_phy_sel(struct device *dev, ph
 	}
 
 	dev = bus_find_device(&platform_bus_type, NULL, node, match);
+	of_node_put(node);
 	priv = dev_get_drvdata(dev);
 
 	priv->cpsw_phy_sel(priv, phy_mode, slave);
+
+	put_device(dev);
 }
 EXPORT_SYMBOL_GPL(cpsw_phy_sel);