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authorscameron@beardog.cca.cpqcorp.net <scameron@beardog.cca.cpqcorp.net>2009-06-08 16:10:57 -0500
committerJens Axboe <jens.axboe@oracle.com>2009-06-09 05:47:44 +0200
commit3969251b80a7b143d01576780073fe0cc9ef6253 (patch)
tree7928657a978ccc6eaca6589a5466277dec43409d /drivers/block/cciss_scsi.c
parent72f9f1324fc4cd450c92e4600a710231b0445c75 (diff)
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>
Diffstat (limited to 'drivers/block/cciss_scsi.c')
-rw-r--r--drivers/block/cciss_scsi.c23
1 files changed, 16 insertions, 7 deletions
diff --git a/drivers/block/cciss_scsi.c b/drivers/block/cciss_scsi.c
index d2eb4897741..3315268b4ec 100644
--- a/drivers/block/cciss_scsi.c
+++ b/drivers/block/cciss_scsi.c
@@ -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)
+ goto retry_tur;
- 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 (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);