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 <dick.kennedy@xxxxxxxxxxxx>
Signed-off-by: James Smart <james.smart@xxxxxxxxxxxx>
---
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
