netdev - [PATCH net-next v1 2/5] net: stmmac: use device_property_read_u32

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Date:   Sat, 15 Jun 2019 12:09:29 +0200
From:   Martin Blumenstingl <martin.blumenstingl@...glemail.com>
To:     netdev@...r.kernel.org, peppe.cavallaro@...com,
        alexandre.torgue@...com, joabreu@...opsys.com, davem@...emloft.net
Cc:     linus.walleij@...aro.org, andrew@...n.ch,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Martin Blumenstingl <martin.blumenstingl@...glemail.com>
Subject: [PATCH net-next v1 2/5] net: stmmac: use device_property_read_u32_array to read the reset delays

Change stmmac_mdio_reset() to use device_property_read_u32_array()
instead of of_property_read_u32_array().

This is meant as a cleanup because we can drop the struct device_node
variable. Also it will make it easier to get rid of struct
stmmac_mdio_bus_data (or at least make it private) in the future because
non-OF platforms can now pass the reset delays as device properties.

No functional changes (neither for OF platforms nor for ones that are
not using OF, because the modified code is still contained in an "if
(priv->device->of_node)").

Signed-off-by: Martin Blumenstingl <martin.blumenstingl@...glemail.com>
---
 drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c
index 21bbe3ba3e8e..4614f1f2bffb 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c
@@ -24,9 +24,9 @@
 #include <linux/io.h>
 #include <linux/iopoll.h>
 #include <linux/mii.h>
-#include <linux/of.h>
 #include <linux/of_mdio.h>
 #include <linux/phy.h>
+#include <linux/property.h>
 #include <linux/slab.h>
 
 #include "dwxgmac2.h"
@@ -254,16 +254,15 @@ int stmmac_mdio_reset(struct mii_bus *bus)
 		struct gpio_desc *reset_gpio;
 
 		if (data->reset_gpio < 0) {
-			struct device_node *np = priv->device->of_node;
-
 			reset_gpio = devm_gpiod_get_optional(priv->device,
 							     "snps,reset",
 							     GPIOD_OUT_LOW);
 			if (IS_ERR(reset_gpio))
 				return PTR_ERR(reset_gpio);
 
-			of_property_read_u32_array(np,
-				"snps,reset-delays-us", data->delays, 3);
+			device_property_read_u32_array(priv->device,
+						       "snps,reset-delays-us",
+						       data->delays, 3);
 		} else {
 			reset_gpio = gpio_to_desc(data->reset_gpio);
 
-- 
2.22.0