diff options
Diffstat (limited to 'drivers/acpi/viot.c')
| -rw-r--r-- | drivers/acpi/viot.c | 18 |
1 files changed, 6 insertions, 12 deletions
diff --git a/drivers/acpi/viot.c b/drivers/acpi/viot.c index ed752cbbe636..c13a20365c2c 100644 --- a/drivers/acpi/viot.c +++ b/drivers/acpi/viot.c @@ -19,11 +19,11 @@ #define pr_fmt(fmt) "ACPI: VIOT: " fmt #include <linux/acpi_viot.h> -#include <linux/fwnode.h> #include <linux/iommu.h> #include <linux/list.h> #include <linux/pci.h> #include <linux/platform_device.h> +#include <linux/property.h> struct viot_iommu { /* Node offset within the table */ @@ -307,27 +307,21 @@ void __init acpi_viot_init(void) static int viot_dev_iommu_init(struct device *dev, struct viot_iommu *viommu, u32 epid) { - const struct iommu_ops *ops; - - if (!viommu) + if (!viommu || !IS_ENABLED(CONFIG_VIRTIO_IOMMU)) return -ENODEV; /* We're not translating ourself */ if (device_match_fwnode(dev, viommu->fwnode)) return -EINVAL; - ops = iommu_ops_from_fwnode(viommu->fwnode); - if (!ops) - return IS_ENABLED(CONFIG_VIRTIO_IOMMU) ? - -EPROBE_DEFER : -ENODEV; - - return acpi_iommu_fwspec_init(dev, epid, viommu->fwnode, ops); + return acpi_iommu_fwspec_init(dev, epid, viommu->fwnode); } static int viot_pci_dev_iommu_init(struct pci_dev *pdev, u16 dev_id, void *data) { u32 epid; struct viot_endpoint *ep; + struct device *aliased_dev = data; u32 domain_nr = pci_domain_nr(pdev->bus); list_for_each_entry(ep, &viot_pci_ranges, list) { @@ -338,7 +332,7 @@ static int viot_pci_dev_iommu_init(struct pci_dev *pdev, u16 dev_id, void *data) epid = ((domain_nr - ep->segment_start) << 16) + dev_id - ep->bdf_start + ep->endpoint_id; - return viot_dev_iommu_init(&pdev->dev, ep->viommu, + return viot_dev_iommu_init(aliased_dev, ep->viommu, epid); } } @@ -372,7 +366,7 @@ int viot_iommu_configure(struct device *dev) { if (dev_is_pci(dev)) return pci_for_each_dma_alias(to_pci_dev(dev), - viot_pci_dev_iommu_init, NULL); + viot_pci_dev_iommu_init, dev); else if (dev_is_platform(dev)) return viot_mmio_dev_iommu_init(to_platform_device(dev)); return -ENODEV; |