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net: phy: phylink: Don't release NULL GPIO

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[ Upstream commit 3bcd47726c3b744fd08781795cca905cc59a1382 ]

If CONFIG_GPIOLIB is disabled, gpiod_put() becomes a stub that produces a
warning, this helped identify that we could be attempting to release a NULL
pl->link_gpio GPIO descriptor, so guard against that.

Fixes: daab3349ad1a ("net: phy: phylink: Release link GPIO")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Florian Fainelli 2018-05-20 20:49:47 -07:00 committed by Greg Kroah-Hartman
parent f72388e367
commit aa3aff5b46
1 changed files with 1 additions and 1 deletions
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2
drivers/net/phy/phylink.c
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@ -561,7 +561,7 @@ void phylink_destroy(struct phylink *pl)
{
if (pl->sfp_bus)
sfp_unregister_upstream(pl->sfp_bus);
if (!IS_ERR(pl->link_gpio))
if (!IS_ERR_OR_NULL(pl->link_gpio))
gpiod_put(pl->link_gpio);
cancel_work_sync(&pl->resolve);