netdev - [PATCH net-next v2 1/7] net: macb: use device-managed devm_mdiobus

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Date:   Tue, 21 Jul 2020 20:13:10 +0300
From:   Codrin Ciubotariu <codrin.ciubotariu@...rochip.com>
To:     <netdev@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>
CC:     <nicolas.ferre@...rochip.com>, <claudiu.beznea@...rochip.com>,
        <davem@...emloft.net>, <kuba@...nel.org>, <andrew@...n.ch>,
        <f.fainelli@...il.com>, <robh+dt@...nel.org>,
        <alexandre.belloni@...tlin.com>, <ludovic.desroches@...rochip.com>,
        "Codrin Ciubotariu" <codrin.ciubotariu@...rochip.com>
Subject: [PATCH net-next v2 1/7] net: macb: use device-managed devm_mdiobus_alloc()

Use the device-managed variant for the allocating the MDIO bus. This
cleans-up the code a little on the remove and error paths.

Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@...rochip.com>
---

Changes in v2:
 - none

 drivers/net/ethernet/cadence/macb_main.c | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

diff --git a/drivers/net/ethernet/cadence/macb_main.c b/drivers/net/ethernet/cadence/macb_main.c
index a6a35e1b0115..89fe7af5e408 100644
--- a/drivers/net/ethernet/cadence/macb_main.c
+++ b/drivers/net/ethernet/cadence/macb_main.c
@@ -769,7 +769,7 @@ static int macb_mii_init(struct macb *bp)
 	/* Enable management port */
 	macb_writel(bp, NCR, MACB_BIT(MPE));
 
-	bp->mii_bus = mdiobus_alloc();
+	bp->mii_bus = devm_mdiobus_alloc(&bp->pdev->dev);
 	if (!bp->mii_bus) {
 		err = -ENOMEM;
 		goto err_out;
@@ -787,7 +787,7 @@ static int macb_mii_init(struct macb *bp)
 
 	err = macb_mdiobus_register(bp);
 	if (err)
-		goto err_out_free_mdiobus;
+		goto err_out;
 
 	err = macb_mii_probe(bp->dev);
 	if (err)
@@ -797,8 +797,6 @@ static int macb_mii_init(struct macb *bp)
 
 err_out_unregister_bus:
 	mdiobus_unregister(bp->mii_bus);
-err_out_free_mdiobus:
-	mdiobus_free(bp->mii_bus);
 err_out:
 	return err;
 }
@@ -4571,7 +4569,6 @@ static int macb_probe(struct platform_device *pdev)
 
 err_out_unregister_mdio:
 	mdiobus_unregister(bp->mii_bus);
-	mdiobus_free(bp->mii_bus);
 
 err_out_free_netdev:
 	free_netdev(dev);
@@ -4599,7 +4596,6 @@ static int macb_remove(struct platform_device *pdev)
 	if (dev) {
 		bp = netdev_priv(dev);
 		mdiobus_unregister(bp->mii_bus);
-		mdiobus_free(bp->mii_bus);
 
 		unregister_netdev(dev);
 		tasklet_kill(&bp->hresp_err_tasklet);
-- 
2.25.1