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path: root/drivers/iommu/iommufd/io_pagetable.c
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Diffstat (limited to 'drivers/iommu/iommufd/io_pagetable.c')
-rw-r--r--drivers/iommu/iommufd/io_pagetable.c9
1 files changed, 6 insertions, 3 deletions
diff --git a/drivers/iommu/iommufd/io_pagetable.c b/drivers/iommu/iommufd/io_pagetable.c
index 504ac1b01b2d..05fd9d3abf1b 100644
--- a/drivers/iommu/iommufd/io_pagetable.c
+++ b/drivers/iommu/iommufd/io_pagetable.c
@@ -1330,20 +1330,23 @@ out_unlock:
int iopt_add_access(struct io_pagetable *iopt, struct iommufd_access *access)
{
+ u32 new_id;
int rc;
down_write(&iopt->domains_rwsem);
down_write(&iopt->iova_rwsem);
- rc = xa_alloc(&iopt->access_list, &access->iopt_access_list_id, access,
- xa_limit_16b, GFP_KERNEL_ACCOUNT);
+ rc = xa_alloc(&iopt->access_list, &new_id, access, xa_limit_16b,
+ GFP_KERNEL_ACCOUNT);
+
if (rc)
goto out_unlock;
rc = iopt_calculate_iova_alignment(iopt);
if (rc) {
- xa_erase(&iopt->access_list, access->iopt_access_list_id);
+ xa_erase(&iopt->access_list, new_id);
goto out_unlock;
}
+ access->iopt_access_list_id = new_id;
out_unlock:
up_write(&iopt->iova_rwsem);