linux-kernel - [PATCH 06/15] net: phy: mdio: reset MDIO devices even if probe() is not implemented

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Message-Id: <20200622093744.13685-7-brgl@bgdev.pl>
Date:   Mon, 22 Jun 2020 11:37:35 +0200
From:   Bartosz Golaszewski <brgl@...ev.pl>
To:     Andrew Lunn <andrew@...n.ch>,
        Florian Fainelli <f.fainelli@...il.com>,
        Heiner Kallweit <hkallweit1@...il.com>,
        Russell King <linux@...linux.org.uk>,
        "David S . Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Microchip Linux Driver Support <UNGLinuxDriver@...rochip.com>,
        Vladimir Oltean <vladimir.oltean@....com>,
        Claudiu Manoil <claudiu.manoil@....com>,
        Alexandre Belloni <alexandre.belloni@...tlin.com>,
        Vivien Didelot <vivien.didelot@...il.com>,
        Tom Lendacky <thomas.lendacky@....com>,
        Yisen Zhuang <yisen.zhuang@...wei.com>,
        Salil Mehta <salil.mehta@...wei.com>,
        Jassi Brar <jaswinder.singh@...aro.org>,
        Ilias Apalodimas <ilias.apalodimas@...aro.org>,
        Iyappan Subramanian <iyappan@...amperecomputing.com>,
        Keyur Chudgar <keyur@...amperecomputing.com>,
        Quan Nguyen <quan@...amperecomputing.com>,
        Frank Rowand <frowand.list@...il.com>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>
Cc:     netdev@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org,
        Fabien Parent <fparent@...libre.com>,
        Stephane Le Provost <stephane.leprovost@...iatek.com>,
        Pedro Tsai <pedro.tsai@...iatek.com>,
        Andrew Perepech <andrew.perepech@...iatek.com>,
        Bartosz Golaszewski <bgolaszewski@...libre.com>
Subject: [PATCH 06/15] net: phy: mdio: reset MDIO devices even if probe() is not implemented

From: Bartosz Golaszewski <bgolaszewski@...libre.com>

Similarily to PHY drivers - there's no reason to require probe() to be
implemented in order to call mdio_device_reset(). MDIO devices can have
resets defined without needing to do anything in probe().

Signed-off-by: Bartosz Golaszewski <bgolaszewski@...libre.com>
---
 drivers/net/phy/mdio_device.c | 13 ++++++-------
 1 file changed, 6 insertions(+), 7 deletions(-)

diff --git a/drivers/net/phy/mdio_device.c b/drivers/net/phy/mdio_device.c
index f60443e48622..be615504b829 100644
--- a/drivers/net/phy/mdio_device.c
+++ b/drivers/net/phy/mdio_device.c
@@ -150,10 +150,10 @@ static int mdio_probe(struct device *dev)
 	struct mdio_driver *mdiodrv = to_mdio_driver(drv);
 	int err = 0;
 
-	if (mdiodrv->probe) {
-		/* Deassert the reset signal */
-		mdio_device_reset(mdiodev, 0);
+	/* Deassert the reset signal */
+	mdio_device_reset(mdiodev, 0);
 
+	if (mdiodrv->probe) {
 		err = mdiodrv->probe(mdiodev);
 		if (err) {
 			/* Assert the reset signal */
@@ -170,12 +170,11 @@ static int mdio_remove(struct device *dev)
 	struct device_driver *drv = mdiodev->dev.driver;
 	struct mdio_driver *mdiodrv = to_mdio_driver(drv);
 
-	if (mdiodrv->remove) {
+	if (mdiodrv->remove)
 		mdiodrv->remove(mdiodev);
 
-		/* Assert the reset signal */
-		mdio_device_reset(mdiodev, 1);
-	}
+	/* Assert the reset signal */
+	mdio_device_reset(mdiodev, 1);
 
 	return 0;
 }
-- 
2.26.1