releases/2.6.20.2/ide-fix-drive-side-80c-cable-check.patch

   1 From stable-bounces@linux.kernel.org Mon Feb  5 04:48:48 2007
   2 From: Tejun Heo <htejun@gmail.com>
   3 Date: Mon, 5 Feb 2007 21:47:13 +0900
   4 Subject: ide: fix drive side 80c cable check
   5 To: Alan <alan@lxorguk.ukuu.org.uk>
   6 Cc: linux-ide@vger.kernel.org, stable@kernel.org, bzolnier@gmail.com
   7 Message-ID: <20070205124713.GL1625@htj.dyndns.org>
   8 Content-Disposition: inline
   9
  10
  11 eighty_ninty_three() had word 93 validitity check but not the 80c bit
  12 test itself (bit 12).  This increases the chance of incorrect wire
  13 detection especially because host side cable detection is often
  14 unreliable and we sometimes soley depend on drive side cable
  15 detection.  Fix it.
  16
  17 Signed-off-by: Tejun Heo <htejun@gmail.com>
  18 Acked-by: Alan <alan@lxorguk.ukuu.org.uk>
  19 Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
  20
  21 ---
  22  drivers/ide/ide-iops.c |    2 ++
  23  1 file changed, 2 insertions(+)
  24
  25 --- linux-2.6.20.1.orig/drivers/ide/ide-iops.c
  26 +++ linux-2.6.20.1/drivers/ide/ide-iops.c
  27 @@ -607,6 +607,8 @@ u8 eighty_ninty_three (ide_drive_t *driv
  28         if(!(drive->id->hw_config & 0x4000))
  29                 return 0;
  30  #endif /* CONFIG_IDEDMA_IVB */
  31 +       if (!(drive->id->hw_config & 0x2000))
  32 +               return 0;
  33         return 1;
  34  }
  35