[prev in list] [next in list] [prev in thread] [next in thread] 

List:       linux-scsi
Subject:    [PATCH 2/4] megaraid_sas: Enable msix_load_balance for Invader and later controllers
From:       Shivasharan S <shivasharan.srikanteshwara () broadcom ! com>
Date:       2019-06-28 9:50:39
Message-ID: 1561715441-1428-3-git-send-email-shivasharan.srikanteshwara () broadcom ! com
[Download RAW message or body]

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>
---
 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 9321878..96b6510 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;
 				}
-- 
2.9.5

[prev in list] [next in list] [prev in thread] [next in thread]