Driver is incorrectly formatting a register on new hardware, using a format for an older chip. This can result in non-deterministic behavior.
Ensure driver is not setting "workqueue index" in the WQ doorbell when making a non-dpp doorbell write. The field must be zero when non-dpp. Signed-off-by: Dick Kennedy <[email protected]> Signed-off-by: James Smart <[email protected]> --- drivers/scsi/lpfc/lpfc_sli.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/drivers/scsi/lpfc/lpfc_sli.c b/drivers/scsi/lpfc/lpfc_sli.c index 4b70d53acb72..74547f437813 100644 --- a/drivers/scsi/lpfc/lpfc_sli.c +++ b/drivers/scsi/lpfc/lpfc_sli.c @@ -145,6 +145,7 @@ lpfc_sli4_wq_put(struct lpfc_queue *q, union lpfc_wqe128 *wqe) uint32_t idx; uint32_t i = 0; uint8_t *tmp; + u32 if_type; /* sanity check on queue memory */ if (unlikely(!q)) @@ -199,8 +200,14 @@ lpfc_sli4_wq_put(struct lpfc_queue *q, union lpfc_wqe128 *wqe) q->queue_id); } else { bf_set(lpfc_wq_db_list_fm_num_posted, &doorbell, 1); - bf_set(lpfc_wq_db_list_fm_index, &doorbell, host_index); bf_set(lpfc_wq_db_list_fm_id, &doorbell, q->queue_id); + + /* Leave bits <23:16> clear for if_type 6 dpp */ + if_type = bf_get(lpfc_sli_intf_if_type, + &q->phba->sli4_hba.sli_intf); + if (if_type != LPFC_SLI_INTF_IF_TYPE_6) + bf_set(lpfc_wq_db_list_fm_index, &doorbell, + host_index); } } else if (q->db_format == LPFC_DB_RING_FORMAT) { bf_set(lpfc_wq_db_ring_fm_num_posted, &doorbell, 1); -- 2.13.1
