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| author | Ching Huang <ching2048@areca.com.tw> | 2017-12-05 03:26:38 +0100 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2017-12-07 01:32:41 +0100 |
| commit | 07640404bda59a6be3dea4ed2b9e6330c809112b (patch) | |
| tree | 7f0d77ded17db9dcb4f1cd429d8befd5dcdb02fc /drivers/scsi/arcmsr | |
| parent | scsi: arcmsr: Add driver module parameter msi_enable (diff) | |
| download | linux-07640404bda59a6be3dea4ed2b9e6330c809112b.tar.xz linux-07640404bda59a6be3dea4ed2b9e6330c809112b.zip | |
scsi: arcmsr: Add driver module parameter msix_enable
Add module parameter msix_enable so user has the option of disabling
MSI-X interrupts if there is a platform problem.
Signed-off-by: Ching Huang <ching2048@areca.com.tw>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/arcmsr')
| -rw-r--r-- | drivers/scsi/arcmsr/arcmsr_hba.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/scsi/arcmsr/arcmsr_hba.c b/drivers/scsi/arcmsr/arcmsr_hba.c index 367904fb7cdf..6d165e5fef15 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 msix_enable = 1; +module_param(msix_enable, int, S_IRUGO); +MODULE_PARM_DESC(msix_enable, "Enable MSI-X interrupt(0 ~ 1), msix_enable=1(enable), =0(disable)"); + 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)"); @@ -829,12 +833,15 @@ arcmsr_request_irq(struct pci_dev *pdev, struct AdapterControlBlock *acb) unsigned long flags; int nvec, i; + if (msix_enable == 0) + goto msi_int0; nvec = pci_alloc_irq_vectors(pdev, 1, ARCMST_NUM_MSIX_VECTORS, PCI_IRQ_MSIX); if (nvec > 0) { pr_info("arcmsr%d: msi-x enabled\n", acb->host->host_no); flags = 0; } else { +msi_int0: if (msi_enable == 1) { nvec = pci_alloc_irq_vectors(pdev, 1, 1, PCI_IRQ_MSI); if (nvec == 1) { |