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cciss: decode unit attention in SCSI error handling code

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Make SCSI reset error handler decode unit attention ASC
and after a target reset wait for a unit attention that indicates
a reset occurred rather than just for any old unit attention.

Signed-off-by: Stephen M. Cameron <scameron@beardog.cca.cpqcorp.net>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
This commit is contained in:
scameron@beardog.cca.cpqcorp.net 2009-06-08 16:10:57 -05:00 committed by Jens Axboe
parent 72f9f1324f
commit 3969251b80
1 changed files with 17 additions and 8 deletions
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25
drivers/block/cciss_scsi.c
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@ -1604,16 +1604,25 @@ static int wait_for_device_to_become_ready(ctlr_info_t *h,
(void) process_sendcmd_error(h, c);
if (rc == 0 && c->err_info->CommandStatus == CMD_SUCCESS)
break;
if (rc == 0 &&
c->err_info->CommandStatus == CMD_TARGET_STATUS &&
c->err_info->ScsiStatus == SAM_STAT_CHECK_CONDITION &&
(c->err_info->SenseInfo[2] == NO_SENSE ||
c->err_info->SenseInfo[2] == UNIT_ATTENTION))
if (rc != 0)
goto retry_tur;
if (c->err_info->CommandStatus == CMD_SUCCESS)
break;
if (c->err_info->CommandStatus == CMD_TARGET_STATUS &&
c->err_info->ScsiStatus == SAM_STAT_CHECK_CONDITION) {
if (c->err_info->SenseInfo[2] == NO_SENSE)
break;
if (c->err_info->SenseInfo[2] == UNIT_ATTENTION) {
unsigned char asc;
asc = c->err_info->SenseInfo[12];
check_for_unit_attention(h, c);
if (asc == POWER_OR_RESET)
break;
}
}
retry_tur:
printk(KERN_WARNING "cciss%d: Waiting %d secs "
"for device to become ready.\n",
h->ctlr, waittime / HZ);