diff mbox series

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

Message ID 20230104125725.271850-15-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 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(-)

Comments

Jason Gunthorpe Jan. 4, 2023, 1:19 p.m. UTC | #1 
On Wed, Jan 04, 2023 at 08:57:20PM +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 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(-)

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

Jason
diff mbox series

Patch

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,