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iommu/msm: Convert to probe/release_device() call-backs

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Convert the MSM 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>
Link: https://lore.kernel.org/r/20200429133712.31431-22-joro@8bytes.org
Signed-off-by: Joerg Roedel <jroedel@suse.de>
This commit is contained in:
Joerg Roedel 2020-04-29 15:36:59 +02:00
parent 21acf6599c
commit dea74f1c37
1 changed files with 7 additions and 27 deletions
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34
drivers/iommu/msm_iommu.c
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@ -388,43 +388,23 @@ static struct msm_iommu_dev *find_iommu_for_dev(struct device *dev)
return ret;
}
static int msm_iommu_add_device(struct device *dev)
static struct iommu_device *msm_iommu_probe_device(struct device *dev)
{
struct msm_iommu_dev *iommu;
struct iommu_group *group;
unsigned long flags;
spin_lock_irqsave(&msm_iommu_lock, flags);
iommu = find_iommu_for_dev(dev);
spin_unlock_irqrestore(&msm_iommu_lock, flags);
if (iommu)
iommu_device_link(&iommu->iommu, dev);
else
return -ENODEV;
if (!iommu)
return ERR_PTR(-ENODEV);
group = iommu_group_get_for_dev(dev);
if (IS_ERR(group))
return PTR_ERR(group);
iommu_group_put(group);
return 0;
return &iommu->iommu;
}
static void msm_iommu_remove_device(struct device *dev)
static void msm_iommu_release_device(struct device *dev)
{
struct msm_iommu_dev *iommu;
unsigned long flags;
spin_lock_irqsave(&msm_iommu_lock, flags);
iommu = find_iommu_for_dev(dev);
spin_unlock_irqrestore(&msm_iommu_lock, flags);
if (iommu)
iommu_device_unlink(&iommu->iommu, dev);
iommu_group_remove_device(dev);
}
static int msm_iommu_attach_dev(struct iommu_domain *domain, struct device *dev)
@ -708,8 +688,8 @@ static struct iommu_ops msm_iommu_ops = {
*/
.iotlb_sync = NULL,
.iova_to_phys = msm_iommu_iova_to_phys,
.add_device = msm_iommu_add_device,
.remove_device = msm_iommu_remove_device,
.probe_device = msm_iommu_probe_device,
.release_device = msm_iommu_release_device,
.device_group = generic_device_group,
.pgsize_bitmap = MSM_IOMMU_PGSIZES,
.of_xlate = qcom_iommu_of_xlate,