diff options
| -rw-r--r-- | drivers/iommu/amd_iommu.c | 3 | ||||
| -rw-r--r-- | drivers/iommu/amd_iommu_types.h | 1 |
2 files changed, 4 insertions, 0 deletions
diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c index 0569843756e5..48f416aca055 100644 --- a/drivers/iommu/amd_iommu.c +++ b/drivers/iommu/amd_iommu.c @@ -534,6 +534,9 @@ static void iommu_poll_events(struct amd_iommu *iommu) u32 head, tail; unsigned long flags; + /* enable event interrupts again */ + writel(MMIO_STATUS_EVT_INT_MASK, iommu->mmio_base + MMIO_STATUS_OFFSET); + spin_lock_irqsave(&iommu->lock, flags); head = readl(iommu->mmio_base + MMIO_EVT_HEAD_OFFSET); diff --git a/drivers/iommu/amd_iommu_types.h b/drivers/iommu/amd_iommu_types.h index 24355559a2ad..c4ffacb033f2 100644 --- a/drivers/iommu/amd_iommu_types.h +++ b/drivers/iommu/amd_iommu_types.h @@ -99,6 +99,7 @@ #define PASID_MASK 0x000fffff /* MMIO status bits */ +#define MMIO_STATUS_EVT_INT_MASK (1 << 1) #define MMIO_STATUS_COM_WAIT_INT_MASK (1 << 2) #define MMIO_STATUS_PPR_INT_MASK (1 << 6) |