diff mbox series

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

Message ID 20230104125725.271850-13-baolu.lu@linux.intel.com
State New
Headers
Series iommu: Retire detach_dev callback |

Commit Message

Baolu Lu Jan. 4, 2023, 12:57 p.m. UTC 
  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(-)

Comments

Jason Gunthorpe Jan. 4, 2023, 1:19 p.m. UTC | #1 
On Wed, Jan 04, 2023 at 08:57:18PM +0800, Lu Baolu wrote:
> 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(-)

Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>

Jason
diff mbox series

Patch

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,
 		/*