linux-kernel - Re: [PATCH RFC v2 2/2] pinctrl: add pinctrl gpio binding support

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Message-ID: <4FBBC900.2070003@wwwdotorg.org>
Date:	Tue, 22 May 2012 11:12:32 -0600
From:	Stephen Warren <swarren@...dotorg.org>
To:	Dong Aisheng <aisheng.dong@...escale.com>
CC:	Dong Aisheng-B29396 <B29396@...escale.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"linus.walleij@...ricsson.com" <linus.walleij@...ricsson.com>
Subject: Re: [PATCH RFC v2 2/2] pinctrl: add pinctrl gpio binding support

On 05/21/2012 09:35 PM, Dong Aisheng wrote:
> On Sat, May 19, 2012 at 04:05:46AM +0800, Stephen Warren wrote:
> ...
>>> +			np_gpio = of_find_node_by_phandle(phandle);
>>> +			if (!np_gpio) {
>>> +				dev_err(pctldev->dev,
>>> +					"failed to find gpio node(%s)\n",
>>> +					np_gpio->name);
>>
>> Perhaps devm_kfree(ranges) here so that if this is called multiple times
>> due to deferred probe, the allocations from the failed attempts don't
>> accumulate. Same for other error paths.
>
> I checked a bit more, it seems the resource will be removed first if there's
> a deffer probe error.

Oh yes of course - that makes sense.
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