diff options
Diffstat (limited to 'drivers/iommu/iommu.c')
-rw-r--r-- | drivers/iommu/iommu.c | 37 |
1 files changed, 6 insertions, 31 deletions
diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c index 1dfd70ea27e4..162d865e2e29 100644 --- a/drivers/iommu/iommu.c +++ b/drivers/iommu/iommu.c @@ -1658,43 +1658,18 @@ out: return ret; } -struct iommu_instance { - struct list_head list; - struct fwnode_handle *fwnode; - const struct iommu_ops *ops; -}; -static LIST_HEAD(iommu_instance_list); -static DEFINE_SPINLOCK(iommu_instance_lock); - -void iommu_register_instance(struct fwnode_handle *fwnode, - const struct iommu_ops *ops) -{ - struct iommu_instance *iommu = kzalloc(sizeof(*iommu), GFP_KERNEL); - - if (WARN_ON(!iommu)) - return; - - of_node_get(to_of_node(fwnode)); - INIT_LIST_HEAD(&iommu->list); - iommu->fwnode = fwnode; - iommu->ops = ops; - spin_lock(&iommu_instance_lock); - list_add_tail(&iommu->list, &iommu_instance_list); - spin_unlock(&iommu_instance_lock); -} - const struct iommu_ops *iommu_ops_from_fwnode(struct fwnode_handle *fwnode) { - struct iommu_instance *instance; const struct iommu_ops *ops = NULL; + struct iommu_device *iommu; - spin_lock(&iommu_instance_lock); - list_for_each_entry(instance, &iommu_instance_list, list) - if (instance->fwnode == fwnode) { - ops = instance->ops; + spin_lock(&iommu_device_lock); + list_for_each_entry(iommu, &iommu_device_list, list) + if (iommu->fwnode == fwnode) { + ops = iommu->ops; break; } - spin_unlock(&iommu_instance_lock); + spin_unlock(&iommu_device_lock); return ops; } |