src/patches/suse-2.6.27.39/patches.drivers/mptsas-discover-all-devices

   1 From: Jeremy Higdon <jeremy@sgi.com>
   2 Subject: mptsas driver fails to discover devices
   3 References: bnc#459932
   4
   5 The mptsas driver has a serious regression in sles11rc1 in that it fails to
   6 discover devices that work fine with sles10sp2.
   7
   8 I discovered that part of the problem was that the target number of the RAID
   9 volume was too high for the driver to discover it.
  10
  11 The problem with the IS220 (LSI 1333 RAID) is that the driver is issuing its
  12 own Test Unit Read and that's apparently being considered a failure from the
  13 Unit Attention statuses.
  14
  15 With this patch the system boots okay.
  16
  17 Signed-off-by: Jeremy Higdon <jeremy@sgi.com>
  18 Signed-off-by: Sathya Prakash <sathya.prakash@lsi.com>
  19 Signed-off-by: Hannes Reinecke <hare@suse.de>
  20
  21 --- /mnt/usr/src/linux/drivers/message/fusion/mptsas.c  2008-12-08 06:54:50.000000000 -0800
  22 +++ linux/drivers/message/fusion/mptsas.c       2009-01-18 22:16:30.456811758 -0800
  23 @@ -1580,12 +1580,10 @@
  24         enum device_state       state;
  25         int                     rc;
  26         u8              skey, asc, ascq;
  27 -       u8              retry_ua;
  28
  29         if (count >= mpt_cmd_retry_count)
  30                 return DEVICE_ERROR;
  31
  32 -       retry_ua = 0;
  33         iocmd = kzalloc(sizeof(INTERNAL_CMD), GFP_KERNEL);
  34         if (!iocmd) {
  35                 printk(MYIOC_s_ERR_FMT "%s: kzalloc(%zd) FAILED!\n",
  36 @@ -1646,10 +1644,8 @@
  37                      __func__, channel, id, skey, asc, ascq));
  38
  39                 if (skey == UNIT_ATTENTION) {
  40 -                       if (!retry_ua) {
  41 -                               retry_ua++;
  42 -                               goto retry;
  43 -                       }
  44 +                       state = DEVICE_RETRY;
  45 +                       break;
  46                 } else if (skey == NOT_READY) {
  47                         /*
  48                          * medium isn't present
  49 @@ -3740,6 +3736,7 @@
  50                                 return;
  51                         }
  52                 }
  53 +               mpt_findImVolumes(ioc);
  54
  55         case MPTSAS_ADD_DEVICE:
  56                 memset(&sas_device, 0, sizeof(struct mptsas_devinfo));