scsi: qla2xxx: Check if FW supports MQ before enabling
[ Upstream commit dffa11453313a115157b19021cc2e27ea98e624c ]
OS boot during Boot from SAN was stuck at dracut emergency shell after
enabling NVMe driver parameter. For non-MQ support the driver was enabling
MQ. Add a check to confirm if FW supports MQ.
Link: https://lore.kernel.org/r/20200806111014.28434-9-njavali@marvell.com
Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com>
Signed-off-by: Saurav Kashyap <skashyap@marvell.com>
Signed-off-by: Nilesh Javali <njavali@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
diff --git a/drivers/scsi/qla2xxx/qla_os.c b/drivers/scsi/qla2xxx/qla_os.c
index b56cf79..e17ca7d 100644
--- a/drivers/scsi/qla2xxx/qla_os.c
+++ b/drivers/scsi/qla2xxx/qla_os.c
@@ -1997,6 +1997,11 @@
/* Determine queue resources */
ha->max_req_queues = ha->max_rsp_queues = 1;
ha->msix_count = QLA_BASE_VECTORS;
+
+ /* Check if FW supports MQ or not */
+ if (!(ha->fw_attributes & BIT_6))
+ goto mqiobase_exit;
+
if (!ql2xmqsupport || !ql2xnvmeenable ||
(!IS_QLA25XX(ha) && !IS_QLA81XX(ha)))
goto mqiobase_exit;