netdev - Re: [PATCH 1/3] serial/imx: add device tree support

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Message-ID: <BANLkTimXZvW16uMRGMeyH203e6MHxdNbSA@mail.gmail.com>
Date:	Thu, 23 Jun 2011 22:05:00 -0600
From:	Grant Likely <grant.likely@...retlab.ca>
To:	Shawn Guo <shawn.guo@...escale.com>
Cc:	patches@...aro.org, netdev@...r.kernel.org,
	devicetree-discuss@...ts.ozlabs.org,
	Jason Liu <jason.hui@...aro.org>, linux-kernel@...r.kernel.org,
	Jeremy Kerr <jeremy.kerr@...onical.com>,
	Sascha Hauer <s.hauer@...gutronix.de>,
	linux-arm-kernel@...ts.infradead.org,
	David Gibson <david@...son.dropbear.id.au>
Subject: Re: [PATCH 1/3] serial/imx: add device tree support

On Thu, Jun 23, 2011 at 9:49 PM, Shawn Guo <shawn.guo@...escale.com> wrote:
> On Thu, Jun 23, 2011 at 05:11:54PM -0600, Grant Likely wrote:
>> > +               int devid = get_alias_name_id(pp->name, devname);
>> > +
>> > +               /* We do not want to proceed this sentinel one */
>> > +               if (!strcmp(pp->name, "name") && !strcmp(pp->value, "aliases"))
>> > +                       break;
>>
>> Skipping the 'name' property is good, but I don't think you need to
>> check the value.  You should also skip the "phandle" property.
>>
> Ok. I have not seen "phandle" property in aliases node though.  Can
> you give me an example, so that I can make one up for testing?

It's a standard property that shows up automatically if any node
happens to have a phandle reference to another node.  The name will be
either "phandle" or "linux,phandle".  Search for "linux,phandle" in
drivers/of/fdt.c to see how that property is processed.

g.
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