iommu/virtio: Use accessor functions for iommu private data

Make use of dev_iommu_priv_set/get() functions.

Signed-off-by: Joerg Roedel <jroedel@suse.de>
Reviewed-by: Jean-Philippe Brucker <jean-philippe@linaro.org>
Link: https://lore.kernel.org/r/20200326150841.10083-16-joro@8bytes.org

diff --git a/drivers/iommu/virtio-iommu.c b/drivers/iommu/virtio-iommu.c
index cce329d..8ead57f 100644 (file)
--- a/drivers/iommu/virtio-iommu.c
+++ b/drivers/iommu/virtio-iommu.c
@@ -466,7 +466,7 @@ static int viommu_probe_endpoint(struct viommu_dev *viommu, struct device *dev)
        struct virtio_iommu_req_probe *probe;
        struct virtio_iommu_probe_property *prop;
        struct iommu_fwspec *fwspec = dev_iommu_fwspec_get(dev);
-       struct viommu_endpoint *vdev = fwspec->iommu_priv;
+       struct viommu_endpoint *vdev = dev_iommu_priv_get(dev);
 
        if (!fwspec->num_ids)
                return -EINVAL;
@@ -648,7 +648,7 @@ static int viommu_attach_dev(struct iommu_domain *domain, struct device *dev)
        int ret = 0;
        struct virtio_iommu_req_attach req;
        struct iommu_fwspec *fwspec = dev_iommu_fwspec_get(dev);
-       struct viommu_endpoint *vdev = fwspec->iommu_priv;
+       struct viommu_endpoint *vdev = dev_iommu_priv_get(dev);
        struct viommu_domain *vdomain = to_viommu_domain(domain);
 
        mutex_lock(&vdomain->mutex);
@@ -807,8 +807,7 @@ static void viommu_iotlb_sync(struct iommu_domain *domain,
 static void viommu_get_resv_regions(struct device *dev, struct list_head *head)
 {
        struct iommu_resv_region *entry, *new_entry, *msi = NULL;
-       struct iommu_fwspec *fwspec = dev_iommu_fwspec_get(dev);
-       struct viommu_endpoint *vdev = fwspec->iommu_priv;
+       struct viommu_endpoint *vdev = dev_iommu_priv_get(dev);
        int prot = IOMMU_WRITE | IOMMU_NOEXEC | IOMMU_MMIO;
 
        list_for_each_entry(entry, &vdev->resv_regions, list) {
@@ -876,7 +875,7 @@ static int viommu_add_device(struct device *dev)
        vdev->dev = dev;
        vdev->viommu = viommu;
        INIT_LIST_HEAD(&vdev->resv_regions);
-       fwspec->iommu_priv = vdev;
+       dev_iommu_priv_set(dev, vdev);
 
        if (viommu->probe_size) {
                /* Get additional information for this endpoint */
@@ -920,7 +919,7 @@ static void viommu_remove_device(struct device *dev)
        if (!fwspec || fwspec->ops != &viommu_ops)
                return;
 
-       vdev = fwspec->iommu_priv;
+       vdev = dev_iommu_priv_get(dev);
 
        iommu_group_remove_device(dev);
        iommu_device_unlink(&vdev->viommu->iommu, dev);