Commit f7d190a9 authored by John Garry's avatar John Garry Committed by Martin K. Petersen
Browse files

scsi: hisi_sas: Put reserved tags in lower region of tagset 



To be consistent with blk-mq, put the reserved tags in the lower region of
the tagset. Eventually we hope to get rid of all this reserved tag
management.

Signed-off-by: default avatarJohn Garry <john.garry@huawei.com>
Link: https://lore.kernel.org/r/1666091763-11023-4-git-send-email-john.garry@huawei.com


Reviewed-by: default avatarHannes Reinecke <hare@suse.de>
Signed-off-by: default avatarMartin K. Petersen <martin.petersen@oracle.com>
parent 295fd233

drivers/scsi/hisi_sas/hisi_sas_main.c

+7 −7
Original line number Diff line number Diff line
@@ -183,16 +183,16 @@ static int hisi_sas_slot_index_alloc(struct hisi_hba *hisi_hba, 
	void *bitmap = hisi_hba->slot_index_tags;



	if (rq)

		return rq->tag;

		return rq->tag + HISI_SAS_RESERVED_IPTT;



	spin_lock(&hisi_hba->lock);

	index = find_next_zero_bit(bitmap, hisi_hba->slot_index_count,

	index = find_next_zero_bit(bitmap, HISI_SAS_RESERVED_IPTT,

				   hisi_hba->last_slot_index + 1);

	if (index >= hisi_hba->slot_index_count) {

	if (index >= HISI_SAS_RESERVED_IPTT) {

		index = find_next_zero_bit(bitmap,

				hisi_hba->slot_index_count,

				HISI_SAS_UNRESERVED_IPTT);

		if (index >= hisi_hba->slot_index_count) {

				HISI_SAS_RESERVED_IPTT,

				0);

		if (index >= HISI_SAS_RESERVED_IPTT) {

			spin_unlock(&hisi_hba->lock);

			return -SAS_QUEUE_FULL;

		}
@@ -2216,7 +2216,7 @@ int hisi_sas_alloc(struct hisi_hba *hisi_hba) 
	if (!hisi_hba->sata_breakpoint)

		goto err_out;



	hisi_hba->last_slot_index = HISI_SAS_UNRESERVED_IPTT;

	hisi_hba->last_slot_index = 0;



	hisi_hba->wq = create_singlethread_workqueue(dev_name(dev));

	if (!hisi_hba->wq) {