[PATCH v3 18/34] iommu/pamu: Convert to probe/release_device() call-backs

Joerg Roedel
2020-04-29T13:38:06Z

Convert the PAMU IOMMU driver to use the probe_device() and
release_device() call-backs of iommu_ops, so that the iommu core code
does the group and sysfs setup.

Signed-off-by: Joerg Roedel <jroedel@suse.de>
---
drivers/iommu/fsl_pamu_domain.c | 22 +++++-----------------
1 file changed, 5 insertions(+), 17 deletions(-)

diff --git a/drivers/iommu/fsl_pamu_domain.c b/drivers/iommu/fsl_pamu_domain.c
index 06828e2698d5..928d37771ece 100644
--- a/drivers/iommu/fsl_pamu_domain.c
+++ b/drivers/iommu/fsl_pamu_domain.c
@@ -1016,25 +1016,13 @@ static struct iommu_group *fsl_pamu_device_group(struct device *dev)
return group;
}

-static int fsl_pamu_add_device(struct device *dev)
+static struct iommu_device *fsl_pamu_probe_device(struct device *dev)
{
- struct iommu_group *group;
-
- group = iommu_group_get_for_dev(dev);
- if (IS_ERR(group))
- return PTR_ERR(group);
-
- iommu_group_put(group);
-
- iommu_device_link(&pamu_iommu, dev);
-
- return 0;
+ return &pamu_iommu;
}

-static void fsl_pamu_remove_device(struct device *dev)
+static void fsl_pamu_release_device(struct device *dev)
{
- iommu_device_unlink(&pamu_iommu, dev);
- iommu_group_remove_device(dev);
}

static const struct iommu_ops fsl_pamu_ops = {
@@ -1048,8 +1036,8 @@ static const struct iommu_ops fsl_pamu_ops = {
.iova_to_phys = fsl_pamu_iova_to_phys,
.domain_set_attr = fsl_pamu_set_domain_attr,
.domain_get_attr = fsl_pamu_get_domain_attr,
- .add_device = fsl_pamu_add_device,
- .remove_device = fsl_pamu_remove_device,
+ .probe_device = fsl_pamu_probe_device,
+ .release_device = fsl_pamu_release_device,
.device_group = fsl_pamu_device_group,
};