2015-07-27 03:23:10

by Vaishali Thakkar

[permalink] [raw]
Subject: [PATCH] soc: versatile: Use devm_kzalloc

This patch introduces the use of devm_kzalloc and does away
with kfree in the probe function.

Signed-off-by: Vaishali Thakkar <[email protected]>
---
Some comments on this patch and driver:
- Here, after this change there will be a kfree on the failure of
the regmap_read too. I am not sure if driver is currently missing
it or there is something else happening here. Also, I think there
should be soc_device_unregister under the regmap_read.
- Moreover, get_maintainer.pl is not pointing me towards any particular
mailing list or maintainers. So, I am sending this patch to all
commiters as there are only three commits for this driver.
---
drivers/soc/versatile/soc-realview.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/soc/versatile/soc-realview.c b/drivers/soc/versatile/soc-realview.c
index e642c45..0889710 100644
--- a/drivers/soc/versatile/soc-realview.c
+++ b/drivers/soc/versatile/soc-realview.c
@@ -103,7 +103,8 @@ static int realview_soc_probe(struct platform_device *pdev)
if (IS_ERR(syscon_regmap))
return PTR_ERR(syscon_regmap);

- soc_dev_attr = kzalloc(sizeof(*soc_dev_attr), GFP_KERNEL);
+ soc_dev_attr = devm_kzalloc(&pdev->dev, sizeof(*soc_dev_attr),
+ GFP_KERNEL);
if (!soc_dev_attr)
return -ENOMEM;

@@ -115,10 +116,9 @@ static int realview_soc_probe(struct platform_device *pdev)
soc_dev_attr->machine = "RealView";
soc_dev_attr->family = "Versatile";
soc_dev = soc_device_register(soc_dev_attr);
- if (IS_ERR(soc_dev)) {
- kfree(soc_dev_attr);
+ if (IS_ERR(soc_dev))
return -ENODEV;
- }
+
ret = regmap_read(syscon_regmap, REALVIEW_SYS_ID_OFFSET,
&realview_coreid);
if (ret)
--
1.9.1


2015-07-28 12:05:03

by Linus Walleij

[permalink] [raw]
Subject: Re: [PATCH] soc: versatile: Use devm_kzalloc

On Mon, Jul 27, 2015 at 5:23 AM, Vaishali Thakkar
<[email protected]> wrote:

> This patch introduces the use of devm_kzalloc and does away
> with kfree in the probe function.
>
> Signed-off-by: Vaishali Thakkar <[email protected]>

Reviewed-by: Linus Walleij <[email protected]>
Please get this through ARM SoC or tell me if I should handle it.

> Some comments on this patch and driver:
> - Here, after this change there will be a kfree on the failure of
> the regmap_read too. I am not sure if driver is currently missing
> it or there is something else happening here. Also, I think there
> should be soc_device_unregister under the regmap_read.

Likely. There are sloppy errors everywhere.

> - Moreover, get_maintainer.pl is not pointing me towards any particular
> mailing list or maintainers. So, I am sending this patch to all
> commiters as there are only three commits for this driver.

This is my code, also my stupid bugs :/

Yours,
Linus Walleij

2015-07-29 08:31:20

by Linus Walleij

[permalink] [raw]
Subject: Re: [PATCH] soc: versatile: Use devm_kzalloc

On Tue, Jul 28, 2015 at 4:17 PM, Vaishali Thakkar
<[email protected]> wrote:
> On 28 Jul 2015 17:35, "Linus Walleij" <[email protected]> wrote:

>> Reviewed-by: Linus Walleij <[email protected]>
>> Please get this through ARM SoC or tell me if I should handle it.
>
> So, do you want me to send this in ARM SoC mailing list?

[email protected] is preferred, if you want
the ARM SoC maintainers to apply the patch directly not
that it has my Review tag, send it to [email protected]
and ask them to apply it.

>> Likely. There are sloppy errors everywhere.
>
> Can I go for handling them?? I am not sure how much important this driver
> is.

Yes, and it's kind of important-ish since people look at
reference designs when doing other board support and the
realviews are also supported in QEMU making them kind
of popular.

Yours,
Linus Walleij

2015-07-30 02:46:21

by Vaishali Thakkar

[permalink] [raw]
Subject: Re: [PATCH] soc: versatile: Use devm_kzalloc

On Wed, Jul 29, 2015 at 2:00 PM, Linus Walleij <[email protected]> wrote:
> On Tue, Jul 28, 2015 at 4:17 PM, Vaishali Thakkar
> <[email protected]> wrote:
>> On 28 Jul 2015 17:35, "Linus Walleij" <[email protected]> wrote:
>
>>> Reviewed-by: Linus Walleij <[email protected]>
>>> Please get this through ARM SoC or tell me if I should handle it.
>>
>> So, do you want me to send this in ARM SoC mailing list?
>
> [email protected] is preferred, if you want
> the ARM SoC maintainers to apply the patch directly not
> that it has my Review tag, send it to [email protected]
> and ask them to apply it.

Ok. I will send this to [email protected]
with your Review tag.

>>> Likely. There are sloppy errors everywhere.
>>
>> Can I go for handling them?? I am not sure how much important this driver
>> is.
>
> Yes, and it's kind of important-ish since people look at
> reference designs when doing other board support and the
> realviews are also supported in QEMU making them kind
> of popular.

I see. Then I'll go for it.

Thank You.

> Yours,
> Linus Walleij



--
Vaishali