diff options
Diffstat (limited to 'drivers/iommu')
| -rw-r--r-- | drivers/iommu/iommu.c | 18 |
1 files changed, 15 insertions, 3 deletions
diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c index bc45478e26db..aeb243f46332 100644 --- a/drivers/iommu/iommu.c +++ b/drivers/iommu/iommu.c @@ -817,6 +817,15 @@ bool iommu_present(struct bus_type *bus) } EXPORT_SYMBOL_GPL(iommu_present); +bool iommu_capable(struct bus_type *bus, enum iommu_cap cap) +{ + if (!bus->iommu_ops || !bus->iommu_ops->capable) + return false; + + return bus->iommu_ops->capable(cap); +} +EXPORT_SYMBOL_GPL(iommu_capable); + /** * iommu_set_fault_handler() - set a fault handler for an iommu domain * @domain: iommu domain @@ -950,10 +959,13 @@ EXPORT_SYMBOL_GPL(iommu_iova_to_phys); int iommu_domain_has_cap(struct iommu_domain *domain, enum iommu_cap cap) { - if (unlikely(domain->ops->domain_has_cap == NULL)) - return 0; + if (domain->ops->domain_has_cap != NULL) + return domain->ops->domain_has_cap(domain, cap); + + if (domain->ops->capable != NULL) + return domain->ops->capable(cap); - return domain->ops->domain_has_cap(domain, cap); + return 0; } EXPORT_SYMBOL_GPL(iommu_domain_has_cap); |