diff options
| -rw-r--r-- | drivers/iommu/fsl_pamu_domain.c | 19 |
1 files changed, 12 insertions, 7 deletions
diff --git a/drivers/iommu/fsl_pamu_domain.c b/drivers/iommu/fsl_pamu_domain.c index cd0c60b40215..d0683daa900f 100644 --- a/drivers/iommu/fsl_pamu_domain.c +++ b/drivers/iommu/fsl_pamu_domain.c @@ -427,23 +427,28 @@ static struct iommu_group *get_pci_device_group(struct pci_dev *pdev) static struct iommu_group *fsl_pamu_device_group(struct device *dev) { - struct iommu_group *group = ERR_PTR(-ENODEV); - int len; - /* * For platform devices we allocate a separate group for * each of the devices. */ - if (dev_is_pci(dev)) - group = get_pci_device_group(to_pci_dev(dev)); - else if (of_get_property(dev->of_node, "fsl,liodn", &len)) + if (!dev_is_pci(dev)) return generic_device_group(dev); - return group; + return get_pci_device_group(to_pci_dev(dev)); } static struct iommu_device *fsl_pamu_probe_device(struct device *dev) { + int len; + + /* + * uboot must fill the fsl,liodn for platform devices to be supported by + * the iommu. + */ + if (!dev_is_pci(dev) && + !of_get_property(dev->of_node, "fsl,liodn", &len)) + return ERR_PTR(-ENODEV); + return &pamu_iommu; } |