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From: Paul Saab <ps@FreeBSD.org>
Date: Wed, 22 Sep 2004 20:14:46 +0000 (UTC)
To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org,
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X-FreeBSD-CVS-Branch: RELENG_4
Subject: cvs commit: src/sys/i386/include pci_cfgreg.h
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ps          2004-09-22 20:14:46 UTC

  FreeBSD src repository

  Modified files:        (Branch: RELENG_4)
    sys/i386/include     pci_cfgreg.h 
  Log:
  MFC:
  revision 1.10
  date: 2003/09/18 17:00:03;  author: jhb;  state: Exp;  lines: +1 -1
  Fix a busted constant related to PCI configuration acess method #1.  The
  reserved bits in the port that must be zero are 24:30, not 20:30.  Bits
  16:23 are used to set the bus number.  This meant that when we tested for
  config mechanism #1, if the previous PCI configuration transaction sent
  used a bus number greater than 15, one of the bits in 20:23 would be
  non-zero and we would fail to use config mechanism #1 and thus fail to see
  that PCI existed on the machine at all.
  
  Approved by:    jhb
  
  Revision  Changes    Path
  1.4.2.2   +2 -2      src/sys/i386/include/pci_cfgreg.h