* [PATCH] regulator: max1586 - fix a memory leak in max1586_pmic_remove()
@ 2010-08-06 5:33 Axel Lin
2010-08-06 8:45 ` Wolfram Sang
` (3 more replies)
0 siblings, 4 replies; 5+ messages in thread
From: Axel Lin @ 2010-08-06 5:33 UTC (permalink / raw)
To: linux-kernel; +Cc: Liam Girdwood, Mark Brown, Wolfram Sang, Robert Jarzmik
In max1586_pmic_probe(), we allocate memory for max1586.
In max1586_pmic_remove(), current implementation only free rdev
which is a member of struct max1586_data.
Thus, there is a small memory leak when we unload the module.
This patch fixes the memory leak by passing max1586 to i2c clientdata,
and properly kfree(max1586) in max1586_pmic_remove().
Signed-off-by: Axel Lin <axel.lin@gmail.com>
---
drivers/regulator/max1586.c | 10 +++++-----
1 files changed, 5 insertions(+), 5 deletions(-)
diff --git a/drivers/regulator/max1586.c b/drivers/regulator/max1586.c
index 2b54d9d..8867c27 100644
--- a/drivers/regulator/max1586.c
+++ b/drivers/regulator/max1586.c
@@ -223,7 +223,7 @@ static int __devinit max1586_pmic_probe(struct i2c_client *client,
}
}
- i2c_set_clientdata(client, rdev);
+ i2c_set_clientdata(client, max1586);
dev_info(&client->dev, "Maxim 1586 regulator driver loaded\n");
return 0;
@@ -238,13 +238,13 @@ out:
static int __devexit max1586_pmic_remove(struct i2c_client *client)
{
- struct regulator_dev **rdev = i2c_get_clientdata(client);
+ struct max1586_data *max1586 = i2c_get_clientdata(client);
int i;
for (i = 0; i <= MAX1586_V6; i++)
- if (rdev[i])
- regulator_unregister(rdev[i]);
- kfree(rdev);
+ if (max1586->rdev[i])
+ regulator_unregister(max1586->rdev[i]);
+ kfree(max1586);
return 0;
}
--
1.5.4.3
^ permalink raw reply related [flat|nested] 5+ messages in thread
* Re: [PATCH] regulator: max1586 - fix a memory leak in max1586_pmic_remove()
2010-08-06 5:33 [PATCH] regulator: max1586 - fix a memory leak in max1586_pmic_remove() Axel Lin
@ 2010-08-06 8:45 ` Wolfram Sang
2010-08-06 11:18 ` Mark Brown
` (2 subsequent siblings)
3 siblings, 0 replies; 5+ messages in thread
From: Wolfram Sang @ 2010-08-06 8:45 UTC (permalink / raw)
To: Axel Lin; +Cc: linux-kernel, Liam Girdwood, Mark Brown, Robert Jarzmik
[-- Attachment #1: Type: text/plain, Size: 724 bytes --]
On Fri, Aug 06, 2010 at 01:33:15PM +0800, Axel Lin wrote:
> In max1586_pmic_probe(), we allocate memory for max1586.
> In max1586_pmic_remove(), current implementation only free rdev
> which is a member of struct max1586_data.
> Thus, there is a small memory leak when we unload the module.
>
> This patch fixes the memory leak by passing max1586 to i2c clientdata,
> and properly kfree(max1586) in max1586_pmic_remove().
>
> Signed-off-by: Axel Lin <axel.lin@gmail.com>
Like with the max8660-patch:
Acked-by: Wolfram Sang <w.sang@pengutronix.de>
--
Pengutronix e.K. | Wolfram Sang |
Industrial Linux Solutions | http://www.pengutronix.de/ |
[-- Attachment #2: Digital signature --]
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^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [PATCH] regulator: max1586 - fix a memory leak in max1586_pmic_remove()
2010-08-06 5:33 [PATCH] regulator: max1586 - fix a memory leak in max1586_pmic_remove() Axel Lin
2010-08-06 8:45 ` Wolfram Sang
@ 2010-08-06 11:18 ` Mark Brown
2010-08-07 9:46 ` Robert Jarzmik
2010-08-09 8:29 ` Liam Girdwood
3 siblings, 0 replies; 5+ messages in thread
From: Mark Brown @ 2010-08-06 11:18 UTC (permalink / raw)
To: Axel Lin; +Cc: linux-kernel, Liam Girdwood, Wolfram Sang, Robert Jarzmik
On Fri, Aug 06, 2010 at 01:33:15PM +0800, Axel Lin wrote:
> In max1586_pmic_probe(), we allocate memory for max1586.
> In max1586_pmic_remove(), current implementation only free rdev
> which is a member of struct max1586_data.
> Thus, there is a small memory leak when we unload the module.
>
> This patch fixes the memory leak by passing max1586 to i2c clientdata,
> and properly kfree(max1586) in max1586_pmic_remove().
>
> Signed-off-by: Axel Lin <axel.lin@gmail.com>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [PATCH] regulator: max1586 - fix a memory leak in max1586_pmic_remove()
2010-08-06 5:33 [PATCH] regulator: max1586 - fix a memory leak in max1586_pmic_remove() Axel Lin
2010-08-06 8:45 ` Wolfram Sang
2010-08-06 11:18 ` Mark Brown
@ 2010-08-07 9:46 ` Robert Jarzmik
2010-08-09 8:29 ` Liam Girdwood
3 siblings, 0 replies; 5+ messages in thread
From: Robert Jarzmik @ 2010-08-07 9:46 UTC (permalink / raw)
To: Axel Lin; +Cc: linux-kernel, Liam Girdwood, Mark Brown, Wolfram Sang
Axel Lin <axel.lin@gmail.com> writes:
> In max1586_pmic_probe(), we allocate memory for max1586.
> In max1586_pmic_remove(), current implementation only free rdev
> which is a member of struct max1586_data.
> Thus, there is a small memory leak when we unload the module.
>
> This patch fixes the memory leak by passing max1586 to i2c clientdata,
> and properly kfree(max1586) in max1586_pmic_remove().
>
> Signed-off-by: Axel Lin <axel.lin@gmail.com>
Acked-by: Robert Jarzmik <robert.jarzmik@free.fr>
Cheers.
--
Robert
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [PATCH] regulator: max1586 - fix a memory leak in max1586_pmic_remove()
2010-08-06 5:33 [PATCH] regulator: max1586 - fix a memory leak in max1586_pmic_remove() Axel Lin
` (2 preceding siblings ...)
2010-08-07 9:46 ` Robert Jarzmik
@ 2010-08-09 8:29 ` Liam Girdwood
3 siblings, 0 replies; 5+ messages in thread
From: Liam Girdwood @ 2010-08-09 8:29 UTC (permalink / raw)
To: Axel Lin; +Cc: linux-kernel, Mark Brown, Wolfram Sang, Robert Jarzmik
On Fri, 2010-08-06 at 13:33 +0800, Axel Lin wrote:
> In max1586_pmic_probe(), we allocate memory for max1586.
> In max1586_pmic_remove(), current implementation only free rdev
> which is a member of struct max1586_data.
> Thus, there is a small memory leak when we unload the module.
>
> This patch fixes the memory leak by passing max1586 to i2c clientdata,
> and properly kfree(max1586) in max1586_pmic_remove().
>
> Signed-off-by: Axel Lin <axel.lin@gmail.com>
> ---
> drivers/regulator/max1586.c | 10 +++++-----
> 1 files changed, 5 insertions(+), 5 deletions(-)
Applied.
Thanks
Liam
--
Freelance Developer, SlimLogic Ltd
ASoC and Voltage Regulator Maintainer.
http://www.slimlogic.co.uk
^ permalink raw reply [flat|nested] 5+ messages in thread
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2010-08-06 5:33 [PATCH] regulator: max1586 - fix a memory leak in max1586_pmic_remove() Axel Lin
2010-08-06 8:45 ` Wolfram Sang
2010-08-06 11:18 ` Mark Brown
2010-08-07 9:46 ` Robert Jarzmik
2010-08-09 8:29 ` Liam Girdwood
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