linux-kernel - RE: [PATCH] regulator: ad5398

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Date:	Wed, 1 Sep 2010 10:56:14 +0800
From:	"Zhang, Sonic" <Sonic.Zhang@...log.com>
To:	"Axel Lin" <axel.lin@...il.com>,
	"linux-kernel" <linux-kernel@...r.kernel.org>
CC:	"Liam Girdwood" <lrg@...mlogic.co.uk>,
	"Mark Brown" <broonie@...nsource.wolfsonmicro.com>
Subject: RE: [PATCH] regulator: ad5398 - fix a memory leak

 

>-----Original Message-----
>From: Axel Lin [mailto:axel.lin@...il.com] 
>Sent: Wednesday, September 01, 2010 10:29 AM
>To: linux-kernel
>Cc: Liam Girdwood; Mark Brown; Zhang, Sonic
>Subject: [PATCH] regulator: ad5398 - fix a memory leak
>
>In current implementation, the address return from 
>regulator_register() is different from the address for 
>regulator_unregister().
>

Acked-by: Sonic Zhang <sonic.zhang@...log.com>

>Signed-off-by: Axel Lin <axel.lin@...il.com>
>---
> drivers/regulator/ad5398.c |   12 ++++++------
> 1 files changed, 6 insertions(+), 6 deletions(-)
>
>diff --git a/drivers/regulator/ad5398.c 
>b/drivers/regulator/ad5398.c index 15ff61d..a4be416 100644
>--- a/drivers/regulator/ad5398.c
>+++ b/drivers/regulator/ad5398.c
>@@ -25,7 +25,7 @@ struct ad5398_chip_info {
> 	unsigned int current_level;
> 	unsigned int current_mask;
> 	unsigned int current_offset;
>-	struct regulator_dev rdev;
>+	struct regulator_dev *rdev;
> };
> 
> static int ad5398_calc_current(struct ad5398_chip_info *chip, 
>@@ -211,7 +211,6 @@ MODULE_DEVICE_TABLE(i2c, ad5398_id);  
>static int __devinit ad5398_probe(struct i2c_client *client,
> 				const struct i2c_device_id *id)
> {
>-	struct regulator_dev *rdev;
> 	struct regulator_init_data *init_data = 
>client->dev.platform_data;
> 	struct ad5398_chip_info *chip;
> 	const struct ad5398_current_data_format *df = @@ -233,9 
>+232,10 @@ static int __devinit ad5398_probe(struct i2c_client *client,
> 	chip->current_offset = df->current_offset;
> 	chip->current_mask = (chip->current_level - 1) << 
>chip->current_offset;
> 
>-	rdev = regulator_register(&ad5398_reg, &client->dev, 
>init_data, chip);
>-	if (IS_ERR(rdev)) {
>-		ret = PTR_ERR(rdev);
>+	chip->rdev = regulator_register(&ad5398_reg, &client->dev,
>+					init_data, chip);
>+	if (IS_ERR(chip->rdev)) {
>+		ret = PTR_ERR(chip->rdev);
> 		dev_err(&client->dev, "failed to register %s %s\n",
> 			id->name, ad5398_reg.name);
> 		goto err;
>@@ -254,7 +254,7 @@ static int __devexit ad5398_remove(struct 
>i2c_client *client)  {
> 	struct ad5398_chip_info *chip = i2c_get_clientdata(client);
> 
>-	regulator_unregister(&chip->rdev);
>+	regulator_unregister(chip->rdev);
> 	kfree(chip);
> 
> 	return 0;
>--
>1.7.2
>
>
>
>
--
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