scsi: megaraid_sas: Enable msix_load_balance for Invader and later controllers

Load balancing IO completions across all available MSI-X vectors should be
enabled for Invader and later generation controllers only.  This needs to
be disabled for older controllers.  Add an adapter type check before
setting msix_load_balance flag.

Fixes: 1d15d9098ad1 ("scsi: megaraid_sas: Load balance completions across all MSI-X")
Signed-off-by: Shivasharan S <shivasharan.srikanteshwara@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

diff --git a/drivers/scsi/megaraid/megaraid_sas_base.c b/drivers/scsi/megaraid/megaraid_sas_base.c
index 3544d52..1bd91c7 100644 (file)
--- a/drivers/scsi/megaraid/megaraid_sas_base.c
+++ b/drivers/scsi/megaraid/megaraid_sas_base.c
@@ -5945,7 +5945,8 @@ static int megasas_init_fw(struct megasas_instance *instance)
                                        instance->is_rdpq = (scratch_pad_1 & MR_RDPQ_MODE_OFFSET) ?
                                                                1 : 0;
 
-                               if (!instance->msix_combined) {
+                               if (instance->adapter_type >= INVADER_SERIES &&
+                                   !instance->msix_combined) {
                                        instance->msix_load_balance = true;
                                        instance->smp_affinity_enable = false;
                                }