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From: Alexander Motin <mav@FreeBSD.org>
Date: Thu, 9 Jun 2011 16:30:13 +0000 (UTC)
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Subject: cvs commit: src/sys/dev/ata ata-sata.c
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mav         2011-06-09 16:30:13 UTC

  FreeBSD src repository

  Modified files:
    sys/dev/ata          ata-sata.c 
  Log:
  SVN rev 222897 on 2011-06-09 16:30:13Z by mav
  
  Intel NM10 chipset's SATA controller has same PCI ID and revision as ICH7's,
  but has only 2 SATA ports instead of 4. The worst part is that SStatus and
  SError registers for missing ports are not implemented and return wrong
  values (0xffffffff), that caused infinite reset loop.
  
  Just ignore that SError value while I found no better way to identify them.
  
  Revision  Changes    Path
  1.12      +23 -7     src/sys/dev/ata/ata-sata.c