diff mbox series

[01/18] ARM/dma-mapping: Drop .dma_supported for IOMMU ops

Message ID 8bcf5f908d23883af00a42c0bb88d44d25c019f5.1597931876.git.robin.murphy@arm.com (mailing list archive)
State New, archived
Headers show
Series Convert arch/arm to use iommu-dma | expand

Commit Message

Robin Murphy Aug. 20, 2020, 3:08 p.m. UTC 
When an IOMMU is present, we trust that it should be capable
of remapping any physical memory, and since the device masks
represent the input (virtual) addresses to the IOMMU it makes
no sense to validate them against physical PFNs anyway.

Signed-off-by: Robin Murphy <robin.murphy@arm.com>
---
 arch/arm/mm/dma-mapping.c | 4 ----
 1 file changed, 4 deletions(-)
diff mbox series

Patch

diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c
index 8a8949174b1c..ffa387f343dc 100644
--- a/arch/arm/mm/dma-mapping.c
+++ b/arch/arm/mm/dma-mapping.c
@@ -1997,8 +1997,6 @@  static const struct dma_map_ops iommu_ops = {
 
 	.map_resource		= arm_iommu_map_resource,
 	.unmap_resource		= arm_iommu_unmap_resource,
-
-	.dma_supported		= arm_dma_supported,
 };
 
 static const struct dma_map_ops iommu_coherent_ops = {
@@ -2015,8 +2013,6 @@  static const struct dma_map_ops iommu_coherent_ops = {
 
 	.map_resource	= arm_iommu_map_resource,
 	.unmap_resource	= arm_iommu_unmap_resource,
-
-	.dma_supported		= arm_dma_supported,
 };
 
 /**