src/patches/suse-2.6.27.39/patches.fixes/scsi-retry-ADD_TO_MLQUEUE-return-values

   1 From: Hannes Reinecke <hare@suse.de>
   2 Date: Mon, 21 Sep 2009 15:09:12 +0200
   3 Subject: [PATCH] Retry ADD_TO_MLQUEUE return values for SCSI EH commands
   4 References: bnc#536117
   5
   6 A target reset when I/O is ongoing might result
   7 an eventual device offline, as scsi_eh_completed_normally()
   8 might return ADD_TO_MLQUEUE in addition to the
   9 advertised SUCCESS, FAILED, and NEEDS_RETRY.
  10
  11 Which is unfortunate as scsi_send_eh_cmnd() will
  12 therefore map ADD_TO_MLQUEUE to FAILED instead of
  13 the more appropriate NEEDS_RETRY.
  14
  15 Signed-off-by: Hannes Reinecke <hare@suse.de>
  16 ---
  17  drivers/scsi/scsi_error.c |    3 +++
  18  1 files changed, 3 insertions(+), 0 deletions(-)
  19
  20 diff --git a/drivers/scsi/scsi_error.c b/drivers/scsi/scsi_error.c
  21 index ab326be..98b9cc3 100644
  22 --- a/drivers/scsi/scsi_error.c
  23 +++ b/drivers/scsi/scsi_error.c
  24 @@ -818,6 +818,9 @@ static int scsi_send_eh_cmnd(struct scsi_cmnd *scmd, unsigned char *cmnd,
  25                 case NEEDS_RETRY:
  26                 case FAILED:
  27                         break;
  28 +               case ADD_TO_MLQUEUE:
  29 +                       rtn = NEEDS_RETRY;
  30 +                       break;
  31                 default:
  32                         rtn = FAILED;
  33                         break;
  34 --
  35 1.5.3.2
  36