From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Florian Fainelli , Andrew Lunn , "David S. Miller" , Sasha Levin Subject: [PATCH 4.14 090/143] net: phy: phylink: Dont release NULL GPIO Date: Fri, 2 Nov 2018 19:34:35 +0100 Message-Id: <20181102182905.054635947@linuxfoundation.org> In-Reply-To: <20181102182857.064326086@linuxfoundation.org> References: <20181102182857.064326086@linuxfoundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit List-ID: 4.14-stable review patch. If anyone has any objections, please let me know. ------------------ [ 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 Reviewed-by: Andrew Lunn Signed-off-by: David S. Miller Signed-off-by: Sasha Levin --- drivers/net/phy/phylink.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/phy/phylink.c b/drivers/net/phy/phylink.c index e4a6ed88b9cf..79f28b9186c6 100644 --- a/drivers/net/phy/phylink.c +++ b/drivers/net/phy/phylink.c @@ -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); -- 2.17.1