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From: Alexander Motin <mav@FreeBSD.org>
Date: Sat, 12 Feb 2011 07:06:40 +0000 (UTC)
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Subject: cvs commit: src/sys/dev/ahci ahci.c
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mav         2011-02-12 07:06:40 UTC

  FreeBSD src repository

  Modified files:
    sys/dev/ahci         ahci.c 
  Log:
  SVN rev 218596 on 2011-02-12 07:06:40Z by mav
  
  Disable NCQ for multiport Marvell 88SX61XX SATA controllers. Simultaneous
  active I/O to several disks (copying large file on ZFS) causes timeout after
  just a few seconds of run. Single port 88SX6111 seems like not affected.
  
  Skip reading transferred bytes count for these controllers. It works for
  88SX6111, but 88SX6145 always returns zero there. Haven't tested others,
  but better to be safe.
  
  Revision  Changes    Path
  1.52      +13 -10    src/sys/dev/ahci/ahci.c