diff options
Diffstat (limited to 'drivers/scsi/arcmsr/arcmsr_hba.c')
| -rw-r--r-- | drivers/scsi/arcmsr/arcmsr_hba.c | 16 |
1 files changed, 13 insertions, 3 deletions
diff --git a/drivers/scsi/arcmsr/arcmsr_hba.c b/drivers/scsi/arcmsr/arcmsr_hba.c index 52f8e1cfd10c..367904fb7cdf 100644 --- a/drivers/scsi/arcmsr/arcmsr_hba.c +++ b/drivers/scsi/arcmsr/arcmsr_hba.c @@ -75,6 +75,10 @@ MODULE_DESCRIPTION("Areca ARC11xx/12xx/16xx/188x SAS/SATA RAID Controller Driver MODULE_LICENSE("Dual BSD/GPL"); MODULE_VERSION(ARCMSR_DRIVER_VERSION); +static int msi_enable = 1; +module_param(msi_enable, int, S_IRUGO); +MODULE_PARM_DESC(msi_enable, "Enable MSI interrupt(0 ~ 1), msi_enable=1(enable), =0(disable)"); + static int host_can_queue = ARCMSR_DEFAULT_OUTSTANDING_CMD; module_param(host_can_queue, int, S_IRUGO); MODULE_PARM_DESC(host_can_queue, " adapter queue depth(32 ~ 1024), default is 128"); @@ -831,11 +835,17 @@ arcmsr_request_irq(struct pci_dev *pdev, struct AdapterControlBlock *acb) pr_info("arcmsr%d: msi-x enabled\n", acb->host->host_no); flags = 0; } else { - nvec = pci_alloc_irq_vectors(pdev, 1, 1, - PCI_IRQ_MSI | PCI_IRQ_LEGACY); + if (msi_enable == 1) { + nvec = pci_alloc_irq_vectors(pdev, 1, 1, PCI_IRQ_MSI); + if (nvec == 1) { + dev_info(&pdev->dev, "msi enabled\n"); + goto msi_int1; + } + } + nvec = pci_alloc_irq_vectors(pdev, 1, 1, PCI_IRQ_LEGACY); if (nvec < 1) return FAILED; - +msi_int1: flags = IRQF_SHARED; } |