linux-kernel - Re: Strange location and name for platform devices when device-tree is used.

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Message-ID: <1383338001.28909.42.camel@pasglop>
Date:	Sat, 02 Nov 2013 07:33:21 +1100
From:	Benjamin Herrenschmidt <benh@...nel.crashing.org>
To:	Grant Likely <grant.likely@...aro.org>
Cc:	NeilBrown <neilb@...e.de>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Rob Herring <rob.herring@...xeda.com>,
	devicetree@...r.kernel.org, lkml <linux-kernel@...r.kernel.org>
Subject: Re: Strange location and name for platform  devices when
 device-tree is used.

On Fri, 2013-11-01 at 11:04 -0700, Grant Likely wrote:

> There are two problems here. First, making the change moves all the DT
> populated devices under the /sys/devices/platform tree, not just
> platform devices.

All DT populated *platform* devices. There are others that have their
own locations.

> Second, I expect there is going to be userspace breakage to move them.
> I've considered moving them before, but so far have felt that being
> tidier hasn't been worth the potential breakage. Userspace /shouldn't/
> be relying on the node name, but we all know that userspace always does
> what it should, right?
> 
> That said, I'm mostly concerned about breakage on Power machines, not on
> the ARM devices in this regard. If you are convinced that I'm worrying about
> nothing, then I'm fine with making the change. If anyone complains
> however then it will need to be reverted.

I don't see an issue with power.

Cheers,
Ben.


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