[PATCH 4.17 197/336] net: phy: phylink: Release link GPIO

[Greg Kroah-Hartman]

4.17-stable review patch.  If anyone has any objections, please let me know.

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

From: Florian Fainelli <f.faine...@gmail.com>

[ Upstream commit daab3349ad1a69663ccad278ed71d55974d104b4 ]

We are not releasing the link GPIO descriptor with gpiod_put() which results in
subsequent probing to get -EBUSY when calling fwnode_get_named_gpiod(). Fix this
by doing the release in phylink_destroy().

Fixes: 9525ae83959b ("phylink: add phylink infrastructure")
Signed-off-by: Florian Fainelli <f.faine...@gmail.com>
Signed-off-by: David S. Miller <da...@davemloft.net>
Signed-off-by: Sasha Levin <alexander.le...@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>
---
 drivers/net/phy/phylink.c |    2 ++
 1 file changed, 2 insertions(+)

--- a/drivers/net/phy/phylink.c
+++ b/drivers/net/phy/phylink.c
@@ -612,6 +612,8 @@ void phylink_destroy(struct phylink *pl)
 {
        if (pl->sfp_bus)
                sfp_unregister_upstream(pl->sfp_bus);
+       if (!IS_ERR(pl->link_gpio))
+               gpiod_put(pl->link_gpio);
 
        cancel_work_sync(&pl->resolve);
        kfree(pl);