diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c index 7f99e5ae432c..48a95f7d7999 100644 --- a/drivers/iommu/iommu.c +++ b/drivers/iommu/iommu.c @@ -194,9 +194,19 @@ static int __iommu_probe_device(struct device *dev, struct list_head *group_list struct iommu_group *group; int ret; + if (!dev_iommu_get(dev)) + return -ENOMEM; + + if (!try_module_get(ops->owner)) { + ret = -EINVAL; + goto err_free; + } + iommu_dev = ops->probe_device(dev); - if (IS_ERR(iommu_dev)) - return PTR_ERR(iommu_dev); + if (IS_ERR(iommu_dev)) { + ret = PTR_ERR(iommu_dev); + goto out_module_put; + } dev->iommu->iommu_dev = iommu_dev; @@ -217,6 +227,12 @@ static int __iommu_probe_device(struct device *dev, struct list_head *group_list out_release: ops->release_device(dev); +out_module_put: + module_put(ops->owner); + +err_free: + dev_iommu_free(dev); + return ret; } @@ -226,14 +242,6 @@ int iommu_probe_device(struct device *dev) struct iommu_group *group; int ret; - if (!dev_iommu_get(dev)) - return -ENOMEM; - - if (!try_module_get(ops->owner)) { - ret = -EINVAL; - goto err_out; - } - ret = __iommu_probe_device(dev, NULL); if (ret) goto err_out; @@ -1532,14 +1540,10 @@ struct iommu_domain *iommu_group_default_domain(struct iommu_group *group) static int probe_iommu_group(struct device *dev, void *data) { - const struct iommu_ops *ops = dev->bus->iommu_ops; struct list_head *group_list = data; struct iommu_group *group; int ret; - if (!dev_iommu_get(dev)) - return -ENOMEM; - /* Device is probed already if in a group */ group = iommu_group_get(dev); if (group) { @@ -1547,22 +1551,7 @@ static int probe_iommu_group(struct device *dev, void *data) return 0; } - if (!try_module_get(ops->owner)) { - ret = -EINVAL; - goto err_free_dev_iommu; - } - ret = __iommu_probe_device(dev, group_list); - if (ret) - goto err_module_put; - - return 0; - -err_module_put: - module_put(ops->owner); -err_free_dev_iommu: - dev_iommu_free(dev); - if (ret == -ENODEV) ret = 0;