[PATCH 1/4] dpt_i2o: use midlayer tcq implementation

[Hannes Reinecke <hare@xxxxxxx>]

Switch to use the SCSI midlayer TCQ implementation and drop the
use of the scsi command list.
And switch to use the SAM status codes while we're at it.

Signed-off-by: Hannes Reinecke <hare@xxxxxxx>
---
 drivers/scsi/dpt_i2o.c | 25 ++++++++++++-------------
 1 file changed, 12 insertions(+), 13 deletions(-)

diff --git a/drivers/scsi/dpt_i2o.c b/drivers/scsi/dpt_i2o.c
index abc74fd474dc..cc3f1100c888 100644
--- a/drivers/scsi/dpt_i2o.c
+++ b/drivers/scsi/dpt_i2o.c
@@ -2335,7 +2335,6 @@ static s32 adpt_scsi_host_alloc(adpt_hba* pHba, struct scsi_host_template *sht)
 	host->unique_id = (u32)sys_tbl_pa + pHba->unit;
 	host->sg_tablesize = pHba->sg_tablesize;
 	host->can_queue = pHba->post_fifo_size;
-	host->use_cmd_list = 1;
 
 	return 0;
 }
@@ -2647,20 +2646,20 @@ static s32 adpt_i2o_reparse_lct(adpt_hba* pHba)
 	return 0;
 }
 
-static void adpt_fail_posted_scbs(adpt_hba* pHba)
+static bool fail_posted_scbs_iter(struct request *rq, void *data, bool reserved)
 {
-	struct scsi_cmnd* 	cmd = NULL;
-	struct scsi_device* 	d = NULL;
+	struct scsi_cmnd *cmd = blk_mq_rq_to_pdu(rq);
 
-	shost_for_each_device(d, pHba->host) {
-		unsigned long flags;
-		spin_lock_irqsave(&d->list_lock, flags);
-		list_for_each_entry(cmd, &d->cmd_list, list) {
-			cmd->result = (DID_OK << 16) | (QUEUE_FULL <<1);
-			cmd->scsi_done(cmd);
-		}
-		spin_unlock_irqrestore(&d->list_lock, flags);
-	}
+	cmd->result = (DID_OK << 16) | SAM_STAT_TASK_SET_FULL;
+	cmd->scsi_done(cmd);
+
+	return true;
+}
+
+static void adpt_fail_posted_scbs(adpt_hba* pHba)
+{
+	blk_mq_tagset_busy_iter(&pHba->host->tag_set,
+				fail_posted_scbs_iter, NULL);
 }
 
 
-- 
2.16.4