releases/3.4.83/ata-enable-quirk-from-jmicron-jmb350-for-jmb394.patch

   1 From efb9e0f4f43780f0ae0c6428d66bd03e805c7539 Mon Sep 17 00:00:00 2001
   2 From: "Denis V. Lunev" <den@openvz.org>
   3 Date: Thu, 30 Jan 2014 15:20:30 +0400
   4 Subject: ata: enable quirk from jmicron JMB350 for JMB394
   5
   6 From: "Denis V. Lunev" <den@openvz.org>
   7
   8 commit efb9e0f4f43780f0ae0c6428d66bd03e805c7539 upstream.
   9
  10 Without the patch the kernel generates the following error.
  11
  12  ata11.15: SATA link up 1.5 Gbps (SStatus 113 SControl 310)
  13  ata11.15: Port Multiplier vendor mismatch '0x197b' != '0x123'
  14  ata11.15: PMP revalidation failed (errno=-19)
  15  ata11.15: failed to recover PMP after 5 tries, giving up
  16
  17 This patch helps to bypass this error and the device becomes
  18 functional.
  19
  20 Signed-off-by: Denis V. Lunev <den@openvz.org>
  21 Signed-off-by: Tejun Heo <tj@kernel.org>
  22 Cc: <linux-ide@vger.kernel.org>
  23 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
  24
  25 ---
  26  drivers/ata/libata-pmp.c |    7 +++++--
  27  1 file changed, 5 insertions(+), 2 deletions(-)
  28
  29 --- a/drivers/ata/libata-pmp.c
  30 +++ b/drivers/ata/libata-pmp.c
  31 @@ -447,8 +447,11 @@ static void sata_pmp_quirks(struct ata_p
  32                  * otherwise.  Don't try hard to recover it.
  33                  */
  34                 ap->pmp_link[ap->nr_pmp_links - 1].flags |= ATA_LFLAG_NO_RETRY;
  35 -       } else if (vendor == 0x197b && devid == 0x2352) {
  36 -               /* chip found in Thermaltake BlackX Duet, jmicron JMB350? */
  37 +       } else if (vendor == 0x197b && (devid == 0x2352 || devid == 0x0325)) {
  38 +               /*
  39 +                * 0x2352: found in Thermaltake BlackX Duet, jmicron JMB350?
  40 +                * 0x0325: jmicron JMB394.
  41 +                */
  42                 ata_for_each_link(link, ap, EDGE) {
  43                         /* SRST breaks detection and disks get misclassified
  44                          * LPM disabled to avoid potential problems