From: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Date: Fri, 13 Sep 2019 15:55:47 -0700
Subject: net: mdio: switch to using gpiod_get_optional()
Patch-mainline: v5.4-rc1
Git-commit: 40ba6a12a5488e0fbcfae2f21a4f62bdb02d44d3
References: bsc#1176447

The MDIO device reset line is optional and now that gpiod_get_optional()
returns proper value when GPIO support is compiled out, there is no
reason to use fwnode_get_named_gpiod() that I plan to hide away.

Let's switch to using more standard gpiod_get_optional() and
gpiod_set_consumer_name() to keep the nice "PHY reset" label.

Also there is no reason to only try to fetch the reset GPIO when we have
OF node, gpiolib can fetch GPIO data from firmwares as well.

Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
 drivers/net/phy/mdio_bus.c |   20 ++++++++------------
 1 file changed, 8 insertions(+), 12 deletions(-)

--- a/drivers/net/phy/mdio_bus.c
+++ b/drivers/net/phy/mdio_bus.c
@@ -42,21 +42,17 @@
 
 static int mdiobus_register_gpiod(struct mdio_device *mdiodev)
 {
-	struct gpio_desc *gpiod = NULL;
+	int error;
 
 	/* Deassert the optional reset signal */
-	if (mdiodev->dev.of_node)
-		gpiod = fwnode_get_named_gpiod(&mdiodev->dev.of_node->fwnode,
-					       "reset-gpios", 0, GPIOD_OUT_LOW,
-					       "PHY reset");
-	if (IS_ERR(gpiod)) {
-		if (PTR_ERR(gpiod) == -ENOENT || PTR_ERR(gpiod) == -ENOSYS)
-			gpiod = NULL;
-		else
-			return PTR_ERR(gpiod);
-	}
+	mdiodev->reset_gpio = gpiod_get_optional(&mdiodev->dev,
+						 "reset", GPIOD_OUT_LOW);
+	error = PTR_ERR_OR_ZERO(mdiodev->reset_gpio);
+	if (error)
+		return error;
 
-	mdiodev->reset_gpio = gpiod;
+	if (mdiodev->reset_gpio)
+		gpiod_set_consumer_name(mdiodev->reset_gpio, "PHY reset");
 
 	return 0;
 }