RISCV_IOMMU_INTR_COUNT
rc = pci_alloc_irq_vectors(pdev, 1, RISCV_IOMMU_INTR_COUNT,
if (iommu->irqs_count > RISCV_IOMMU_INTR_COUNT)
iommu->irqs_count = RISCV_IOMMU_INTR_COUNT;
unsigned int irqs[RISCV_IOMMU_INTR_COUNT];