diff options
Diffstat (limited to 'drivers/iommu/iommu.c')
| -rw-r--r-- | drivers/iommu/iommu.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c index ffe6f685ceae..3e3528436e0b 100644 --- a/drivers/iommu/iommu.c +++ b/drivers/iommu/iommu.c @@ -768,6 +768,7 @@ err_put_group: mutex_unlock(&group->mutex); dev->iommu_group = NULL; kobject_put(group->devices_kobj); + sysfs_remove_link(group->devices_kobj, device->name); err_free_name: kfree(device->name); err_remove_link: @@ -2256,6 +2257,25 @@ void iommu_put_resv_regions(struct device *dev, struct list_head *list) ops->put_resv_regions(dev, list); } +/** + * generic_iommu_put_resv_regions - Reserved region driver helper + * @dev: device for which to free reserved regions + * @list: reserved region list for device + * + * IOMMU drivers can use this to implement their .put_resv_regions() callback + * for simple reservations. Memory allocated for each reserved region will be + * freed. If an IOMMU driver allocates additional resources per region, it is + * going to have to implement a custom callback. + */ +void generic_iommu_put_resv_regions(struct device *dev, struct list_head *list) +{ + struct iommu_resv_region *entry, *next; + + list_for_each_entry_safe(entry, next, list, list) + kfree(entry); +} +EXPORT_SYMBOL(generic_iommu_put_resv_regions); + struct iommu_resv_region *iommu_alloc_resv_region(phys_addr_t start, size_t length, int prot, enum iommu_resv_type type) |