14 Nov
2022
14 Nov
'22
4:58 p.m.
On Mon, Nov 14, 2022 at 02:33:41PM +0100, Eric Auger wrote:
+/**
- iommu_device_release_dma_owner() - Release DMA ownership of a device
- @group: The device.
@dev: the device
- Release the DMA ownership claimed by iommu_device_claim_dma_owner().
- */
+void iommu_device_release_dma_owner(struct device *dev) +{
- struct iommu_group *group = iommu_group_get(dev);
- mutex_lock(&group->mutex);
- if (group->owner_cnt > 1) {
group->owner_cnt--;goto unlock_out;- }
- __iommu_release_dma_ownership(group);
+unlock_out:
- mutex_unlock(&group->mutex);
if (group->owner_cnt > 1)
group->owner_cnt--; else __iommu_release_dma_ownership(group);
mutex_unlock(&group->mutex);
iommu_group_put(group);
Sure, thanks
Jason