cciss: decode unit attention in SCSI error handling code
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>
diff --git a/drivers/block/cciss_scsi.c b/drivers/block/cciss_scsi.c
index d2eb489..3315268 100644
--- a/drivers/block/cciss_scsi.c
+++ b/drivers/block/cciss_scsi.c
@@ -1604,16 +1604,25 @@
(void) process_sendcmd_error(h, c);
- if (rc == 0 && c->err_info->CommandStatus == CMD_SUCCESS)
+ if (rc != 0)
+ goto retry_tur;
+
+ if (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))
- 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);