Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 07640404 authored by Ching Huang's avatar Ching Huang Committed by Martin K. Petersen
Browse files

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: default avatarChing Huang <ching2048@areca.com.tw>
Signed-off-by: default avatarMartin K. Petersen <martin.petersen@oracle.com>
parent a18686eb

drivers/scsi/arcmsr/arcmsr_hba.c

+7 −0
Original line number Diff line number Diff line
@@ -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) {