diff options
Diffstat (limited to 'drivers/iommu/iommu.c')
| -rw-r--r-- | drivers/iommu/iommu.c | 33 |
1 files changed, 31 insertions, 2 deletions
diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c index d1317b0..1717402 100644 --- a/drivers/iommu/iommu.c +++ b/drivers/iommu/iommu.c @@ -204,6 +204,35 @@ again: } EXPORT_SYMBOL_GPL(iommu_group_alloc); +struct iommu_group *iommu_group_get_by_id(int id) +{ + struct kobject *group_kobj; + struct iommu_group *group; + const char *name; + + if (!iommu_group_kset) + return NULL; + + name = kasprintf(GFP_KERNEL, "%d", id); + if (!name) + return NULL; + + group_kobj = kset_find_obj(iommu_group_kset, name); + kfree(name); + + if (!group_kobj) + return NULL; + + group = container_of(group_kobj, struct iommu_group, kobj); + BUG_ON(group->id != id); + + kobject_get(group->devices_kobj); + kobject_put(&group->kobj); + + return group; +} +EXPORT_SYMBOL_GPL(iommu_group_get_by_id); + /** * iommu_group_get_iommudata - retrieve iommu_data registered for a group * @group: the group @@ -863,13 +892,13 @@ EXPORT_SYMBOL_GPL(iommu_unmap); int iommu_domain_window_enable(struct iommu_domain *domain, u32 wnd_nr, - phys_addr_t paddr, u64 size, int iommu_prot) + phys_addr_t paddr, u64 size, int prot) { if (unlikely(domain->ops->domain_window_enable == NULL)) return -ENODEV; return domain->ops->domain_window_enable(domain, wnd_nr, paddr, size, - iommu_prot); + prot); } EXPORT_SYMBOL_GPL(iommu_domain_window_enable); |