linux-kernel - [PATCH v2 2/2] net: mv643xx_eth: use managed devm

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Date:	Thu, 11 Apr 2013 11:29:34 +0200
From:	Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>
To:	Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>
Cc:	Grant Likely <grant.likely@...retlab.ca>,
	Rob Herring <rob.herring@...xeda.com>,
	Rob Landley <rob@...dley.net>,
	Lennert Buytenhek <buytenh@...tstofly.org>,
	Andrew Lunn <andrew@...n.ch>,
	Jason Cooper <jason@...edaemon.net>,
	Florian Fainelli <florian@...nwrt.org>,
	Sergei Shtylyov <sergei.shtylyov@...entembedded.com>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	Paul Mackerras <paulus@...ba.org>,
	linuxppc-dev@...ts.ozlabs.org, devicetree-discuss@...ts.ozlabs.org,
	linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org,
	netdev@...r.kernel.org
Subject: [PATCH v2 2/2] net: mv643xx_eth: use managed devm_kzalloc

This patch moves shared private data kzalloc to managed devm_kzalloc and
cleans now unneccessary kfree and error handling.

Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>
---
Changes from v1:
- replaced EADDRNOTAVAIL with ENOMEM on failing ioremap (Reported by
  Sergei Shtylyov)

Cc: Grant Likely <grant.likely@...retlab.ca>
Cc: Rob Herring <rob.herring@...xeda.com>
Cc: Rob Landley <rob@...dley.net>
Cc: Lennert Buytenhek <buytenh@...tstofly.org>
Cc: Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>
Cc: Andrew Lunn <andrew@...n.ch>
Cc: Jason Cooper <jason@...edaemon.net>
Cc: Florian Fainelli <florian@...nwrt.org>
Cc: Sergei Shtylyov <sergei.shtylyov@...entembedded.com>
Cc: Benjamin Herrenschmidt <benh@...nel.crashing.org>
Cc: Paul Mackerras <paulus@...ba.org>
Cc: linuxppc-dev@...ts.ozlabs.org
Cc: devicetree-discuss@...ts.ozlabs.org
Cc: linux-doc@...r.kernel.org
Cc: linux-kernel@...r.kernel.org
Cc: netdev@...r.kernel.org
---
 drivers/net/ethernet/marvell/mv643xx_eth.c |   17 ++++-------------
 1 file changed, 4 insertions(+), 13 deletions(-)

diff --git a/drivers/net/ethernet/marvell/mv643xx_eth.c b/drivers/net/ethernet/marvell/mv643xx_eth.c
index bbe6104..305038f 100644
--- a/drivers/net/ethernet/marvell/mv643xx_eth.c
+++ b/drivers/net/ethernet/marvell/mv643xx_eth.c
@@ -2547,25 +2547,22 @@ static int mv643xx_eth_shared_probe(struct platform_device *pdev)
 	struct mv643xx_eth_shared_private *msp;
 	const struct mbus_dram_target_info *dram;
 	struct resource *res;
-	int ret;
 
 	if (!mv643xx_eth_version_printed++)
 		pr_notice("MV-643xx 10/100/1000 ethernet driver version %s\n",
 			  mv643xx_eth_driver_version);
 
-	ret = -EINVAL;
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	if (res == NULL)
-		goto out;
+		return -EINVAL;
 
-	ret = -ENOMEM;
-	msp = kzalloc(sizeof(*msp), GFP_KERNEL);
+	msp = devm_kzalloc(&pdev->dev, sizeof(*msp), GFP_KERNEL);
 	if (msp == NULL)
-		goto out;
+		return -ENOMEM;
 
 	msp->base = ioremap(res->start, resource_size(res));
 	if (msp->base == NULL)
-		goto out_free;
+		return -ENOMEM;
 
 	msp->clk = devm_clk_get(&pdev->dev, NULL);
 	if (!IS_ERR(msp->clk))
@@ -2585,11 +2582,6 @@ static int mv643xx_eth_shared_probe(struct platform_device *pdev)
 	platform_set_drvdata(pdev, msp);
 
 	return 0;
-
-out_free:
-	kfree(msp);
-out:
-	return ret;
 }
 
 static int mv643xx_eth_shared_remove(struct platform_device *pdev)
@@ -2599,7 +2591,6 @@ static int mv643xx_eth_shared_remove(struct platform_device *pdev)
 	iounmap(msp->base);
 	if (!IS_ERR(msp->clk))
 		clk_disable_unprepare(msp->clk);
-	kfree(msp);
 
 	return 0;
 }
-- 
1.7.10.4

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