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From: Warner Losh <imp@FreeBSD.org>
Date: Sun, 7 Dec 2008 18:32:09 +0000 (UTC)
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Subject: cvs commit: src/sys/dev/pccbb pccbb_pci.c
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imp         2008-12-07 18:32:09 UTC

  FreeBSD src repository

  Modified files:
    sys/dev/pccbb        pccbb_pci.c 
  Log:
  SVN rev 185740 on 2008-12-07 18:32:09Z by imp
  
  Use atomic_add_int rather than a simple ++ to ensure no cache races if
  the power interrupt and init code waiting for the interrupt are
  running on different CPUs.  I haven't seen this make any real
  difference, but I've also had some reports of odd behavior I can't
  otherwise explain.  It is an infrequent operation, and certainly
  wouldn't hurt.
  
  Revision  Changes    Path
  1.31      +1 -1      src/sys/dev/pccbb/pccbb_pci.c