mpt3sas: Manage MSI-X vectors according to HBA device type

[linux-2.6-block.git] / drivers / scsi / mpt3sas / mpt3sas_scsih.c

diff --git a/drivers/scsi/mpt3sas/mpt3sas_scsih.c b/drivers/scsi/mpt3sas/mpt3sas_scsih.c
index 80469d0a38438575f9016000c173ffef5d7ecb5a..2b51a414a3801a82f794ca1c22727eddeca8eed1 100644 (file)
--- a/drivers/scsi/mpt3sas/mpt3sas_scsih.c
+++ b/drivers/scsi/mpt3sas/mpt3sas_scsih.c
@@ -7938,6 +7938,13 @@ _scsih_determine_hba_mpi_version(struct MPT3SAS_ADAPTER *ioc) {
        case MPI25_MFGPAGE_DEVID_SAS3108_5:
        case MPI25_MFGPAGE_DEVID_SAS3108_6:
                ioc->hba_mpi_version_belonged = MPI25_VERSION;
+
+               /* Check whether the controller revision is C0 or above.
+                * only C0 and above revision controllers support 96 MSI-X
+                * vectors.
+                */
+               if (ioc->pdev->revision >= SAS3_PCI_DEVICE_C0_REVISION)
+                       ioc->msix96_vector = 1;
                break;
        }
 }