src/patches/suse-2.6.27.25/patches.fixes/scsi_dh-retry-on-UNIT_ATTENTION

   1 From: Hannes Reinecke <hare@suse.de>
   2 Subject: scsi_dh_rdac does not retry MODE SENSE on UNIT ATTENTION
   3 References: bnc#464155
   4
   5 When we encounter a UNIT ATTENTION sense code we should always retry
   6 the command; the ASC and ASQ codes are irrelevant here.
   7
   8 Signed-off-by: Hannes Reinecke <hare@suse.de>
   9 Signed-off-by: Chandra Seetharaman <sekharan@us.ibm.com>
  10
  11 diff --git a/drivers/scsi/device_handler/scsi_dh_rdac.c b/drivers/scsi/device_handler/scsi_dh_rdac.c
  12 index f25a03e..3ab052d 100644
  13 --- a/drivers/scsi/device_handler/scsi_dh_rdac.c
  14 +++ b/drivers/scsi/device_handler/scsi_dh_rdac.c
  15 @@ -459,11 +459,10 @@ static int mode_select_handle_sense(struct scsi_device *sdev,
  16         sense = (sense_hdr.sense_key << 16) | (sense_hdr.asc << 8) |
  17                         sense_hdr.ascq;
  18         /* If it is retryable failure, submit the c9 inquiry again */
  19 -       if (sense == 0x59136 || sense == 0x68b02 || sense == 0xb8b02 ||
  20 -                           sense == 0x62900) {
  21 +       if (sense_hdr.sense_key == 6 || sense == 0x59136 || sense == 0xb8b02) {
  22                 /* 0x59136    - Command lock contention
  23 -                * 0x[6b]8b02 - Quiesense in progress or achieved
  24 -                * 0x62900    - Power On, Reset, or Bus Device Reset
  25 +                * 0xb8b02    - Quiescense achieved
  26 +                * 0x6xxxx    - Unit Attention
  27                  */
  28                 err = SCSI_DH_RETRY;
  29         }