netdev - [PATCH v3 5/8] net: phy: Use devm api for mdio bus allocation in bcm iproc mdio mux

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Message-Id: <1533146186-8374-6-git-send-email-arun.parameswaran@broadcom.com>
Date:   Wed,  1 Aug 2018 10:56:23 -0700
From:   Arun Parameswaran <arun.parameswaran@...adcom.com>
To:     "David S. Miller" <davem@...emloft.net>,
        Florian Fainelli <f.fainelli@...il.com>,
        Andrew Lunn <andrew@...n.ch>, Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Ray Jui <rjui@...adcom.com>,
        Scott Branden <sbranden@...adcom.com>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will.deacon@....com>
Cc:     netdev@...r.kernel.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        bcm-kernel-feedback-list@...adcom.com,
        Arun Parameswaran <arun.parameswaran@...adcom.com>
Subject: [PATCH v3 5/8] net: phy: Use devm api for mdio bus allocation in bcm iproc mdio mux

Use devm_mdiobus_alloc() instead of mdiobus_alloc() in the Broadcom
iProc mdio mux driver.

Also, clear the driver data on error from probe or when remove() is
called.

Signed-off-by: Arun Parameswaran <arun.parameswaran@...adcom.com>
---
 drivers/net/phy/mdio-mux-bcm-iproc.c | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/drivers/net/phy/mdio-mux-bcm-iproc.c b/drivers/net/phy/mdio-mux-bcm-iproc.c
index c36ce4b..5640d78 100644
--- a/drivers/net/phy/mdio-mux-bcm-iproc.c
+++ b/drivers/net/phy/mdio-mux-bcm-iproc.c
@@ -198,7 +198,7 @@ static int mdio_mux_iproc_probe(struct platform_device *pdev)
 		return PTR_ERR(md->base);
 	}
 
-	md->mii_bus = mdiobus_alloc();
+	md->mii_bus = devm_mdiobus_alloc(&pdev->dev);
 	if (!md->mii_bus) {
 		dev_err(&pdev->dev, "mdiomux bus alloc failed\n");
 		return -ENOMEM;
@@ -217,7 +217,7 @@ static int mdio_mux_iproc_probe(struct platform_device *pdev)
 	rc = mdiobus_register(bus);
 	if (rc) {
 		dev_err(&pdev->dev, "mdiomux registration failed\n");
-		goto out;
+		return rc;
 	}
 
 	platform_set_drvdata(pdev, md);
@@ -226,6 +226,7 @@ static int mdio_mux_iproc_probe(struct platform_device *pdev)
 			   &md->mux_handle, md, md->mii_bus);
 	if (rc) {
 		dev_info(md->dev, "mdiomux initialization failed\n");
+		platform_set_drvdata(pdev, NULL);
 		goto out_register;
 	}
 
@@ -236,8 +237,6 @@ static int mdio_mux_iproc_probe(struct platform_device *pdev)
 
 out_register:
 	mdiobus_unregister(bus);
-out:
-	mdiobus_free(bus);
 	return rc;
 }
 
@@ -247,7 +246,7 @@ static int mdio_mux_iproc_remove(struct platform_device *pdev)
 
 	mdio_mux_uninit(md->mux_handle);
 	mdiobus_unregister(md->mii_bus);
-	mdiobus_free(md->mii_bus);
+	platform_set_drvdata(pdev, NULL);
 
 	return 0;
 }
-- 
1.9.1