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Date: Fri, 16 May 2014 18:21:35 +0200
From: Hans Petter Selasky <hps@selasky.org>
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Subject: panic: resource_list_add: resource entry is busy
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Hi,

I see the following panic:

panic: resource_list_add: resource entry is busy

When trying to kldload an older pccard driver. The call comes from the 
driver_added bus method somewhere down the tree. Loading the module 
before the kernel boots fixes the problem temporarily.

Any bells ringing or patch suggestions?

Seeing this on 9-stable, also believed that the same issue exists with 
10-current.

--HPS