netdev - Re: [PATCH] netdev/phy: skip disabled mdio-mux nodes

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Date:	Tue, 7 Aug 2012 12:04:00 -0500
From:	Timur Tabi <timur@...escale.com>
To:	David Daney <ddaney.cavm@...il.com>
CC:	Grant Likely <grant.likely@...retlab.ca>,
	Rob Herring <rob.herring@...xeda.com>,
	<david.daney@...ium.com>, David Miller <davem@...emloft.net>,
	<netdev@...r.kernel.org>,
	"devicetree-discuss@...ts.ozlabs.org" 
	<devicetree-discuss@...ts.ozlabs.org>
Subject: Re: [PATCH] netdev/phy: skip disabled mdio-mux nodes

David Daney wrote:
> Although this will get the job done, I don't think it is the cleanest 
> approach.
> 
> Would it be better to create a new iterator 
> (for_each_available_child_of_node perhaps) that skips the unavailable 
> nodes?  This seems like a general problem that is not restricted to mdio 
> multiplexers.

You're probably right, but this is how it's normally done.  If you're
going to scan child nodes manually, you have to skip disabled nodes.

If someone else wants to implement for_each_available_child_of_node(), I'm
all for it, but such a patch would not be merged until 3.7.  I was hoping
to have my patch applied to 3.6, since it fixes a real bug.

-- 
Timur Tabi
Linux kernel developer at Freescale

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