diff options
Diffstat (limited to '')
| -rw-r--r-- | drivers/iommu/iommufd/device.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/drivers/iommu/iommufd/device.c b/drivers/iommu/iommufd/device.c index 15733b316b70..2cc3c12d301d 100644 --- a/drivers/iommu/iommufd/device.c +++ b/drivers/iommu/iommufd/device.c @@ -329,6 +329,13 @@ iommufd_group_setup_msi(struct iommufd_group *igroup, } #endif +static bool +iommufd_group_first_attach(struct iommufd_group *igroup, ioasid_t pasid) +{ + lockdep_assert_held(&igroup->lock); + return !igroup->hwpt; +} + static int iommufd_device_attach_reserved_iova(struct iommufd_device *idev, struct iommufd_hwpt_paging *hwpt_paging) @@ -344,7 +351,7 @@ iommufd_device_attach_reserved_iova(struct iommufd_device *idev, if (rc) return rc; - if (list_empty(&igroup->device_list)) { + if (iommufd_group_first_attach(igroup, IOMMU_NO_PASID)) { rc = iommufd_group_setup_msi(igroup, hwpt_paging); if (rc) { iopt_remove_reserved_iova(&hwpt_paging->ioas->iopt, @@ -508,7 +515,7 @@ int iommufd_hw_pagetable_attach(struct iommufd_hw_pagetable *hwpt, * reserved regions are only updated during individual device * attachment. */ - if (list_empty(&igroup->device_list)) { + if (iommufd_group_first_attach(igroup, pasid)) { rc = iommufd_hwpt_attach_device(hwpt, idev, pasid); if (rc) goto err_unresv; |