From: Fangyu Yu <fangyu.yu@linux.alibaba.com>

The irq_mask and irq_ack are required for host irq to be triggered
under the host system.

Signed-off-by: Fangyu Yu <fangyu.yu@linux.alibaba.com>
---
 drivers/iommu/riscv/iommu-ir.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/iommu/riscv/iommu-ir.c b/drivers/iommu/riscv/iommu-ir.c
index 5461dbe18159..73f552ed5b65 100644
--- a/drivers/iommu/riscv/iommu-ir.c
+++ b/drivers/iommu/riscv/iommu-ir.c
@@ -208,6 +208,7 @@ static struct irq_chip riscv_iommu_irq_chip = {
 	.irq_unmask		= irq_chip_unmask_parent,
 	.irq_set_affinity	= irq_chip_set_affinity_parent,
 	.irq_set_vcpu_affinity	= riscv_iommu_irq_set_vcpu_affinity,
+	.irq_ack		= irq_chip_ack_parent,
 };
 
 static int riscv_iommu_irq_domain_alloc_irqs(struct irq_domain *irqdomain,
@@ -239,7 +240,9 @@ static const struct msi_parent_ops riscv_iommu_msi_parent_ops = {
 	.supported_flags	= MSI_GENERIC_FLAGS_MASK |
 				  MSI_FLAG_PCI_MSIX,
 	.required_flags		= MSI_FLAG_USE_DEF_DOM_OPS |
-				  MSI_FLAG_USE_DEF_CHIP_OPS,
+				  MSI_FLAG_USE_DEF_CHIP_OPS |
+				  MSI_FLAG_PCI_MSI_MASK_PARENT,
+	.chip_flags		= MSI_CHIP_FLAG_SET_ACK,
 	.init_dev_msi_info	= msi_parent_init_dev_msi_info,
 };
 
-- 
2.49.0