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From: Vladimir Zapolskiy <vladimir_zapolskiy-nmGgyN9QBj3QT0dZR+AlfA@public.gmane.org>
To: Wolfram Sang <wsa-z923LK4zBo2bacvFa/9K2g@public.gmane.org>
Cc: Thierry Reding <treding-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>,
	linux-i2c-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	Doug Anderson <dianders-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org>
Subject: Re: [PATCH v2 4/4] i2c: arb-gpio-challenge: use of_get_i2c_adapter_by_node interface
Date: Thu, 6 Aug 2015 13:18:55 +0300	[thread overview]
Message-ID: <55C3348F.7030801@mentor.com> (raw)
In-Reply-To: <20150806005151.GD1743@katana>

Hi Wolfram,

On 06.08.2015 03:51, Wolfram Sang wrote:
> On Mon, Jul 27, 2015 at 05:30:51PM +0300, Vladimir Zapolskiy wrote:
>> This change is needed to properly lock I2C parent bus driver.
>>
>> Prior to this change i2c_put_adapter() is misused, which may lead
>> to an overflow over zero of I2C bus driver user counter.
>>
>> By the way added a missing of_node_put() to eliminate memory leak,
>> if OF_DYNAMIC is enabled.
>>
>> Signed-off-by: Vladimir Zapolskiy <vladimir_zapolskiy-nmGgyN9QBj3QT0dZR+AlfA@public.gmane.org>
>> Cc: Doug Anderson <dianders-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org>
> 
> Applied to for-next! However...

great, thank you.

>> +	of_node_put(parent_np);
> 
> I removed this line. Please resend this as a seperate patch since it
> fixes a seperate issue.
> 

Definitely, I always forget about non-zero probability of any commit
reverse. I'll resend this change plus at least two more similar fixes in
drivers/i2c I have in mind in a separate series.

--
With best wishes,
Vladimir

  reply	other threads:[~2015-08-06 10:18 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-07-27 14:30 [PATCH v2 0/4] i2c: fix i2c adapter device driver user counter Vladimir Zapolskiy
     [not found] ` <1438007451-8553-1-git-send-email-vladimir_zapolskiy-nmGgyN9QBj3QT0dZR+AlfA@public.gmane.org>
2015-07-27 14:30   ` [PATCH v2 1/4] i2c: core: fix leaked device refcount on of_find_i2c_* error path Vladimir Zapolskiy
     [not found]     ` <1438007451-8553-2-git-send-email-vladimir_zapolskiy-nmGgyN9QBj3QT0dZR+AlfA@public.gmane.org>
2015-08-01 10:09       ` Wolfram Sang
2015-07-27 14:30   ` [PATCH v2 2/4] i2c: core: manage i2c bus device refcount in i2c_[get|put]_adapter Vladimir Zapolskiy
     [not found]     ` <1438007451-8553-3-git-send-email-vladimir_zapolskiy-nmGgyN9QBj3QT0dZR+AlfA@public.gmane.org>
2015-08-06  0:50       ` Wolfram Sang
2015-07-27 14:30   ` [PATCH v2 3/4] i2c: core: add and export of_get_i2c_adapter_by_node() interface Vladimir Zapolskiy
     [not found]     ` <1438007451-8553-4-git-send-email-vladimir_zapolskiy-nmGgyN9QBj3QT0dZR+AlfA@public.gmane.org>
2015-08-06  0:50       ` Wolfram Sang
2015-07-27 14:30   ` [PATCH v2 4/4] i2c: arb-gpio-challenge: use of_get_i2c_adapter_by_node interface Vladimir Zapolskiy
     [not found]     ` <1438007451-8553-5-git-send-email-vladimir_zapolskiy-nmGgyN9QBj3QT0dZR+AlfA@public.gmane.org>
2015-08-06  0:51       ` Wolfram Sang
2015-08-06 10:18         ` Vladimir Zapolskiy [this message]
2015-08-01 10:09   ` [PATCH v2 0/4] i2c: fix i2c adapter device driver user counter Wolfram Sang
2015-08-01 23:37     ` Vladimir Zapolskiy

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