net: ag71xx: get reset control using devm api

Currently, the of variant is missing reset_control_put in error paths.
The devm variant does not require it.

Allows removing mdio_reset from the struct as it is not used outside the
function.

Signed-off-by: Rosen Penev <rosenp@gmail.com>
Reviewed-by: Oleksij Rempel <o.rempel@pengutronix.de>
Link: https://patch.msgid.link/20240905194938.8453-6-rosenp@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/drivers/net/ethernet/atheros/ag71xx.c b/drivers/net/ethernet/atheros/ag71xx.c
index 35db691..a32a72f 100644 (file)
--- a/drivers/net/ethernet/atheros/ag71xx.c
+++ b/drivers/net/ethernet/atheros/ag71xx.c
@@ -379,7 +379,6 @@ struct ag71xx {
        u32 fifodata[3];
        int mac_idx;
 
-       struct reset_control *mdio_reset;
        struct clk *clk_mdio;
 };
 
@@ -689,6 +688,7 @@ static int ag71xx_mdio_probe(struct ag71xx *ag)
 {
        struct device *dev = &ag->pdev->dev;
        struct net_device *ndev = ag->ndev;
+       struct reset_control *mdio_reset;
        static struct mii_bus *mii_bus;
        struct device_node *np, *mnp;
        int err;
@@ -705,10 +705,10 @@ static int ag71xx_mdio_probe(struct ag71xx *ag)
        if (!mii_bus)
                return -ENOMEM;
 
-       ag->mdio_reset = of_reset_control_get_exclusive(np, "mdio");
-       if (IS_ERR(ag->mdio_reset)) {
+       mdio_reset = devm_reset_control_get_exclusive(dev, "mdio");
+       if (IS_ERR(mdio_reset)) {
                netif_err(ag, probe, ndev, "Failed to get reset mdio.\n");
-               return PTR_ERR(ag->mdio_reset);
+               return PTR_ERR(mdio_reset);
        }
 
        mii_bus->name = "ag71xx_mdio";
@@ -719,10 +719,10 @@ static int ag71xx_mdio_probe(struct ag71xx *ag)
        mii_bus->parent = dev;
        snprintf(mii_bus->id, MII_BUS_ID_SIZE, "%s.%d", np->name, ag->mac_idx);
 
-       if (!IS_ERR(ag->mdio_reset)) {
-               reset_control_assert(ag->mdio_reset);
+       if (!IS_ERR(mdio_reset)) {
+               reset_control_assert(mdio_reset);
                msleep(100);
-               reset_control_deassert(ag->mdio_reset);
+               reset_control_deassert(mdio_reset);
                msleep(200);
        }