linux-kernel - Re: [PATCH v4 1/4] dt: add of_get_child

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Date:	Fri, 27 Apr 2012 11:28:37 +0800
From:	Dong Aisheng <aisheng.dong@...escale.com>
To:	Stephen Warren <swarren@...dotorg.org>
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>,
	"devicetree-discuss@...ts.ozlabs.org" 
	<devicetree-discuss@...ts.ozlabs.org>,
	"linus.walleij@...ricsson.com" <linus.walleij@...ricsson.com>,
	"s.hauer@...gutronix.de" <s.hauer@...gutronix.de>,
	Guo Shawn-R65073 <r65073@...escale.com>,
	"kernel@...gutronix.de" <kernel@...gutronix.de>,
	"grant.likely@...retlab.ca" <grant.likely@...retlab.ca>,
	"rob.herring@...xeda.com" <rob.herring@...xeda.com>,
	"cjb@...top.org" <cjb@...top.org>,
	Zhao Richard-B20223 <B20223@...escale.com>
Subject: Re: [PATCH v4 1/4] dt: add of_get_child_count helper function

On Fri, Apr 27, 2012 at 12:24:11AM +0800, Stephen Warren wrote:
> On 04/26/2012 08:40 AM, Dong Aisheng wrote:
> > From: Dong Aisheng <dong.aisheng@...aro.org>
> > 
> > Currently most code to get child count in kernel are almost same,
> > add a helper to implement this function for dt to use.
> 
> > diff --git a/include/linux/of.h b/include/linux/of.h
> 
> > +static inline int of_get_child_count(const struct device_node *np)
> > +{
> > +	struct device_node *child = NULL;
> 
> You don't actually need to initialize child here. It doesn't really
> matter here, but in a more complex function, it might hide a
> used-before-initialized error.
> 
Correct, i could change it.

Regards
Dong Aisheng

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