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From: Peter Chen <hzpeterchen-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
To: Arnd Bergmann <arnd-r2nGTMty4D4@public.gmane.org>
Cc: Peter Chen <peter.chen-KZfg59tc24xl57MIdRCFDg@public.gmane.org>,
	gregkh-hQyY1W1yCW8ekmWlsbkhG0B+6BGkLq7r@public.gmane.org,
	stern-nwvwT67g6+6dFdvTe/nMLpVzexx5G7lz@public.gmane.org,
	linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org,
	devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org,
	pawel.moll-5wv7dgnIgG8@public.gmane.org,
	mark.rutland-5wv7dgnIgG8@public.gmane.org,
	linux-usb-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	balbi-l0cyMroinI0@public.gmane.org,
	valentin.longchamp-SkAbAL50j+5BDgjK7y7TUQ@public.gmane.org
Subject: Re: [RFC PATCH 1/2] USB: core: let USB device know device node
Date: Sat, 9 Jan 2016 16:56:53 +0800	[thread overview]
Message-ID: <20160109085653.GB27759@shlinux2> (raw)
In-Reply-To: <11330516.E3pzCBVn95@wuerfel>

On Fri, Jan 08, 2016 at 09:22:22AM +0100, Arnd Bergmann wrote:
> On Friday 08 January 2016 13:44:23 Peter Chen wrote:
> > +struct device_node *usb_of_find_node(struct device_node *parent, int portnum)
> > +{
> > +       struct device_node *node;
> > +       u32 port;
> > +
> > +       for_each_child_of_node(parent, node) {
> > +               if (!of_property_read_u32(node, "reg", &port)) {
> > +                       if (port == portnum)
> > +                               return node;
> > +               }
> > +       }
> > +
> > +       return NULL;
> > +}
> > +EXPORT_SYMBOL_GPL(usb_of_find_node);
> 
> The implementation looks good to me, but I find the function name slightly
> confusing. We use "*find_node" or similar names in other subsystems to
> scan the entire tree, when this one just looks at the immediate children
> of the device.
> 
> Maybe something like "usb_of_get_child_node()" instead?
> 

Ok, thanks. 

-- 

Best Regards,
Peter Chen
--
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  reply	other threads:[~2016-01-09  8:56 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-01-08  5:44 [RFC PATCH 0/2] USB: let the USB device know device node Peter Chen
     [not found] ` <1452231864-11171-1-git-send-email-peter.chen-KZfg59tc24xl57MIdRCFDg@public.gmane.org>
2016-01-08  5:44   ` [RFC PATCH 1/2] USB: core: let " Peter Chen
     [not found]     ` <1452231864-11171-2-git-send-email-peter.chen-KZfg59tc24xl57MIdRCFDg@public.gmane.org>
2016-01-08  8:22       ` Arnd Bergmann
2016-01-09  8:56         ` Peter Chen [this message]
2016-01-08 14:32       ` Rob Herring
     [not found]         ` <CAL_JsqKwATxGiqJ_MNV6_pur1dUEVOzH+iB8yY+kWA0y2gWbNg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2016-01-09  9:05           ` Peter Chen
2016-01-09 15:20             ` Rob Herring
2016-01-08 22:50       ` Alan Stern
     [not found]         ` <Pine.LNX.4.44L0.1601081746080.21467-100000-pYrvlCTfrz9XsRXLowluHWD2FQJk+8+b@public.gmane.org>
2016-01-09  9:32           ` Peter Chen
2016-01-08  5:44   ` [RFC PATCH 2/2] usb: Example for how to use device node at usb device driver Peter Chen
     [not found]     ` <1452231864-11171-3-git-send-email-peter.chen-KZfg59tc24xl57MIdRCFDg@public.gmane.org>
2016-01-08  8:26       ` Arnd Bergmann
2016-01-09  8:57         ` Peter Chen

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