On Wed, Aug 26, 2015 at 08:14:36AM -0500, Rob Herring wrote:

On Tue, Aug 25, 2015 at 2:34 PM, Felipe Balbi [off-list ref] wrote:

quoted

If we don't insert resources into the resource tree,
calls to of_platform_depopulate() will end up in NULL
pointer dereferences because the resource parent will
be set to NULL even though we still have more resources
to go through.

Long standing problem. A fix is in -next now and will go into 4.3 (plus stable):

commit 11c63e4718acad3d8f04601c80fddd4b3d1455b1
Author: Grant Likely [off-list ref]
Date:   Sun Jun 7 15:20:11 2015 +0100

    drivercore: Fix unregistration path of platform devices

that commit works, but too late to add a Tested-by :-)

-- 
balbi