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scsi: megaraid_sas: Enable msix_load_balance for Invader and later controllers

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[ Upstream commit 1175b88452cad208894412b955ee698934968aed ]

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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Shivasharan S
2019-06-28 02:50:39 -07:00
committed by Greg Kroah-Hartman
parent b17d81b94d
commit dd1524d5d9
1 changed files with 2 additions and 1 deletions
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3
drivers/scsi/megaraid/megaraid_sas_base.c
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@@ -5364,7 +5364,8 @@ static int megasas_init_fw(struct megasas_instance *instance)
instance->is_rdpq = (scratch_pad_2 & MR_RDPQ_MODE_OFFSET) ? instance->is_rdpq = (scratch_pad_2 & MR_RDPQ_MODE_OFFSET) ?
1 : 0; 1 : 0;
if (!instance->msix_combined) { if (instance->adapter_type >= INVADER_SERIES &&
!instance->msix_combined) {
instance->msix_load_balance = true; instance->msix_load_balance = true;
instance->smp_affinity_enable = false; instance->smp_affinity_enable = false;
} }