From mboxrd@z Thu Jan 1 00:00:00 1970 From: Sebastian Frias Subject: [PATCH] net: phy: at803x: Request 'reset' GPIO only for AT8030 PHY Date: Wed, 23 Mar 2016 11:49:09 +0100 Message-ID: <56F274A5.6030502@laposte.net> References: <56E99727.9040702@laposte.net> <20160318125455.GN4292@pengutronix.de> <56EC2525.8000706@laposte.net> <20160318191242.GQ4292@pengutronix.de> <56EFEDAD.9030903@laposte.net> <20160321135457.GX4292@pengutronix.de> <56F0150F.8080804@laposte.net> <20160321201229.GA6191@pengutronix.de> <56F157EF.5080307@laposte.net> <20160322194224.GF6191@pengutronix.de> <56F26BF7.3090201@laposte.net> Mime-Version: 1.0 Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit Cc: Daniel Mack , "David S. Miller" , netdev@vger.kernel.org, lkml , mason , Florian Fainelli , Mans Rullgard , Fabio Estevam , Martin Blumenstingl , Linus Walleij To: =?windows-1252?Q?Uwe_Kleine-K=F6nig?= Return-path: Received: from smtpoutz28.laposte.net ([194.117.213.103]:42951 "EHLO smtp.laposte.net" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751611AbcCWKtN (ORCPT ); Wed, 23 Mar 2016 06:49:13 -0400 Received: from smtp.laposte.net (localhost [127.0.0.1]) by lpn-prd-vrout016 (Postfix) with ESMTP id CAE49111082 for ; Wed, 23 Mar 2016 11:49:10 +0100 (CET) Received: from lpn-prd-vrin003 (lpn-prd-vrin003.prosodie [10.128.63.4]) by lpn-prd-vrout016 (Postfix) with ESMTP id C8A32110E09 for ; Wed, 23 Mar 2016 11:49:10 +0100 (CET) Received: from lpn-prd-vrin003 (localhost [127.0.0.1]) by lpn-prd-vrin003 (Postfix) with ESMTP id B183D48C41F for ; Wed, 23 Mar 2016 11:49:10 +0100 (CET) In-Reply-To: <56F26BF7.3090201@laposte.net> Sender: netdev-owner@vger.kernel.org List-ID: This removes the dependency on GPIOLIB for non faulty PHYs. Indeed, without this patch, if GPIOLIB is not selected devm_gpiod_get_optional() will return -ENOSYS and the driver probe call will fail, regardless of the actual PHY hardware. Out of the 3 PHYs supported by this driver (AT8030, AT8031, AT8035), only AT8030 presents the issues that commit 13a56b449325 ("net: phy: at803x: Add support for hardware reset") attempts to work-around by using a 'reset' GPIO line. Hence, only AT8030 should depend on GPIOLIB operating properly. Fixes: 13a56b449325 ("net: phy: at803x: Add support for hardware reset") Signed-off-by: Sebastian Frias --- drivers/net/phy/at803x.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/net/phy/at803x.c b/drivers/net/phy/at803x.c index 2174ec9..dcecf25 100644 --- a/drivers/net/phy/at803x.c +++ b/drivers/net/phy/at803x.c @@ -251,12 +251,16 @@ static int at803x_probe(struct phy_device *phydev) if (!priv) return -ENOMEM; + if (phydev->drv->phy_id != ATH8030_PHY_ID) + goto does_not_require_reset_workaround; + gpiod_reset = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_HIGH); if (IS_ERR(gpiod_reset)) return PTR_ERR(gpiod_reset); priv->gpiod_reset = gpiod_reset; +does_not_require_reset_workaround: phydev->priv = priv; return 0; -- 2.1.4