From owner-freebsd-drivers@FreeBSD.ORG  Tue Sep 19 14:51:32 2006
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To: gireesh.nagabhushana@neterion.com
From: Warner Losh <imp@bsdimp.com>
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Cc: freebsd-drivers@freebsd.org
Subject: Re: Reading configuration file from driver during load
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> Do we have any way of avoiding this?

Yes.  You can use tunables from kenv.  I posted one example of how to
do this.  Please let me know if you need to do this on a per-device
basis, and I'll point you at a driver that does this.

Warner