diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/iommu/iommu.c | 35 |
1 files changed, 26 insertions, 9 deletions
diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c index 9c9336a923cd..f0e0a233c902 100644 --- a/drivers/iommu/iommu.c +++ b/drivers/iommu/iommu.c @@ -753,6 +753,17 @@ static int add_iommu_group(struct device *dev, void *data) return ops->add_device(dev); } +static int remove_iommu_group(struct device *dev, void *data) +{ + struct iommu_callback_data *cb = data; + const struct iommu_ops *ops = cb->ops; + + if (ops->remove_device && dev->iommu_group) + ops->remove_device(dev); + + return 0; +} + static int iommu_bus_notifier(struct notifier_block *nb, unsigned long action, void *data) { @@ -821,19 +832,25 @@ static int iommu_bus_init(struct bus_type *bus, const struct iommu_ops *ops) nb->notifier_call = iommu_bus_notifier; err = bus_register_notifier(bus, nb); - if (err) { - kfree(nb); - return err; - } + if (err) + goto out_free; err = bus_for_each_dev(bus, NULL, &cb, add_iommu_group); - if (err) { - bus_unregister_notifier(bus, nb); - kfree(nb); - return err; - } + if (err) + goto out_err; + return 0; + +out_err: + /* Clean up */ + bus_for_each_dev(bus, NULL, &cb, remove_iommu_group); + bus_unregister_notifier(bus, nb); + +out_free: + kfree(nb); + + return err; } /** |