[PATCH v4 12/19] iommu/msm: Add set_platform_dma_ops callback

Lu Baolu
2023-01-04T13:08:50Z

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_ops 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/msm_iommu.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/iommu/msm_iommu.c b/drivers/iommu/msm_iommu.c
index c60624910872..454f6331c889 100644
--- a/drivers/iommu/msm_iommu.c
+++ b/drivers/iommu/msm_iommu.c
@@ -443,9 +443,9 @@ static int msm_iommu_attach_dev(struct iommu_domain *domain, struct device *dev)
return ret;
}

-static void msm_iommu_detach_dev(struct iommu_domain *domain,
- struct device *dev)
+static void msm_iommu_set_platform_dma(struct device *dev)
{
+ struct iommu_domain *domain = iommu_get_domain_for_dev(dev);
struct msm_priv *priv = to_msm_priv(domain);
unsigned long flags;
struct msm_iommu_dev *iommu;
@@ -678,11 +678,11 @@ static struct iommu_ops msm_iommu_ops = {
.domain_alloc = msm_iommu_domain_alloc,
.probe_device = msm_iommu_probe_device,
.device_group = generic_device_group,
+ .set_platform_dma_ops = msm_iommu_set_platform_dma,
.pgsize_bitmap = MSM_IOMMU_PGSIZES,
.of_xlate = qcom_iommu_of_xlate,
.default_domain_ops = &(const struct iommu_domain_ops) {
.attach_dev = msm_iommu_attach_dev,
- .detach_dev = msm_iommu_detach_dev,
.map_pages = msm_iommu_map,
.unmap_pages = msm_iommu_unmap,
/*
--
2.34.1