linux-kernel - [PATCH 1/3] regulator: max8649: Use devm

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Message-ID: <1333812508.6390.1.camel@phoenix>
Date:	Sat, 07 Apr 2012 23:28:28 +0800
From:	Axel Lin <axel.lin@...il.com>
To:	linux-kernel@...r.kernel.org
Cc:	Jonghwan Choi <jhbird.choi@...il.com>,
	Haojian Zhuang <haojian.zhuang@...vell.com>,
	Mark Brown <broonie@...nsource.wolfsonmicro.com>,
	Liam Girdwood <lrg@...com>
Subject: [PATCH 1/3] regulator: max8649: Use devm_* APIs

Signed-off-by: Axel Lin <axel.lin@...il.com>
---
 drivers/regulator/max8649.c |   19 ++++++-------------
 1 files changed, 6 insertions(+), 13 deletions(-)

diff --git a/drivers/regulator/max8649.c b/drivers/regulator/max8649.c
index 2e9ffbe..f22e893 100644
--- a/drivers/regulator/max8649.c
+++ b/drivers/regulator/max8649.c
@@ -229,17 +229,18 @@ static int __devinit max8649_regulator_probe(struct i2c_client *client,
 	unsigned char data;
 	int ret;
 
-	info = kzalloc(sizeof(struct max8649_regulator_info), GFP_KERNEL);
+	info = devm_kzalloc(&client->dev, sizeof(struct max8649_regulator_info),
+			    GFP_KERNEL);
 	if (!info) {
 		dev_err(&client->dev, "No enough memory\n");
 		return -ENOMEM;
 	}
 
-	info->regmap = regmap_init_i2c(client, &max8649_regmap_config);
+	info->regmap = devm_regmap_init_i2c(client, &max8649_regmap_config);
 	if (IS_ERR(info->regmap)) {
 		ret = PTR_ERR(info->regmap);
 		dev_err(&client->dev, "Failed to allocate register map: %d\n", ret);
-		goto fail;
+		return ret;
 	}
 
 	info->dev = &client->dev;
@@ -267,7 +268,7 @@ static int __devinit max8649_regulator_probe(struct i2c_client *client,
 	if (ret != 0) {
 		dev_err(info->dev, "Failed to detect ID of MAX8649:%d\n",
 			ret);
-		goto out;
+		return ret;
 	}
 	dev_info(info->dev, "Detected MAX8649 (ID:%x)\n", val);
 
@@ -302,16 +303,10 @@ static int __devinit max8649_regulator_probe(struct i2c_client *client,
 	if (IS_ERR(info->regulator)) {
 		dev_err(info->dev, "failed to register regulator %s\n",
 			dcdc_desc.name);
-		ret = PTR_ERR(info->regulator);
-		goto out;
+		return PTR_ERR(info->regulator);
 	}
 
 	return 0;
-out:
-	regmap_exit(info->regmap);
-fail:
-	kfree(info);
-	return ret;
 }
 
 static int __devexit max8649_regulator_remove(struct i2c_client *client)
@@ -321,8 +316,6 @@ static int __devexit max8649_regulator_remove(struct i2c_client *client)
 	if (info) {
 		if (info->regulator)
 			regulator_unregister(info->regulator);
-		regmap_exit(info->regmap);
-		kfree(info);
 	}
 
 	return 0;
-- 
1.7.5.4



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