[PATCH v4 14/19] iommu/omap: Add set_platform_dma_ops callback

Lu Baolu
2023-01-04T13:08:51Z

This IOMMU driver doesn't support default domain. Add the implementation
of set_platform_dma_ops callback so that the IOMMU core could return the
DMA control. With the set_platform_dma implemented, there's no need for
detach_dev. Remove it to avoid dead code.

Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
---
drivers/iommu/omap-iommu.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/iommu/omap-iommu.c b/drivers/iommu/omap-iommu.c
index 2fd7702c6709..3ab078112a7c 100644
--- a/drivers/iommu/omap-iommu.c
+++ b/drivers/iommu/omap-iommu.c
@@ -1556,9 +1556,9 @@ static void _omap_iommu_detach_dev(struct omap_iommu_domain *omap_domain,
omap_domain->dev = NULL;
}

-static void omap_iommu_detach_dev(struct iommu_domain *domain,
- struct device *dev)
+static void omap_iommu_set_platform_dma(struct device *dev)
{
+ struct iommu_domain *domain = iommu_get_domain_for_dev(dev);
struct omap_iommu_domain *omap_domain = to_omap_domain(domain);

spin_lock(&omap_domain->lock);
@@ -1737,10 +1737,10 @@ static const struct iommu_ops omap_iommu_ops = {
.probe_device = omap_iommu_probe_device,
.release_device = omap_iommu_release_device,
.device_group = omap_iommu_device_group,
+ .set_platform_dma_ops = omap_iommu_set_platform_dma,
.pgsize_bitmap = OMAP_IOMMU_PGSIZES,
.default_domain_ops = &(const struct iommu_domain_ops) {
.attach_dev = omap_iommu_attach_dev,
- .detach_dev = omap_iommu_detach_dev,
.map = omap_iommu_map,
.unmap = omap_iommu_unmap,
.iova_to_phys = omap_iommu_iova_to_phys,
--
2.34.1