From owner-svn-src-stable@FreeBSD.ORG  Fri May  4 16:15:38 2012
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From: John Baldwin <jhb@freebsd.org>
To: Hans Petter Selasky <hselasky@freebsd.org>
Date: Fri, 4 May 2012 12:14:16 -0400
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	(bigwig.baldwin.cx); Fri, 04 May 2012 12:15:37 -0400 (EDT)
Cc: svn-src-stable@freebsd.org, svn-src-all@freebsd.org,
	src-committers@freebsd.org, svn-src-stable-9@freebsd.org
Subject: Re: svn commit: r235007 - stable/9/sys/dev/pci
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On Friday, May 04, 2012 11:38:47 am Hans Petter Selasky wrote:
> Author: hselasky
> Date: Fri May  4 15:38:47 2012
> New Revision: 235007
> URL: http://svn.freebsd.org/changeset/base/235007
> 
> Log:
>   MFC r233662, r233677 and r233678:
>   
>   Writing zero to BAR actually does not disable it and
>   it is even harmful as hselasky found out.  Historically,
>   this code was originated from (OLDCARD) CardBus driver and later leaked into
>   PCI driver when CardBus was newbus'ified and refactored with PCI driver.
>   However, it is not really necessary even for CardBus.

FYI, I've got one bug report on HEAD where these changes broke a machine's
ATA controller.

-- 
John Baldwin