From 1175b88452cad208894412b955ee698934968aed Mon Sep 17 00:00:00 2001
From: Shivasharan S <shivasharan.srikanteshwara@broadcom.com>
Date: Fri, 28 Jun 2019 02:50:39 -0700
Subject: [PATCH] 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>
---
drivers/scsi/megaraid/megaraid_sas_base.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/scsi/megaraid/megaraid_sas_base.c b/drivers/scsi/megaraid/megaraid_sas_base.c
index 3544d52dddf03..1bd91c7fb10c0 100644
--- 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;
}
--
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