aboutsummaryrefslogtreecommitdiffstats
path: root/arch/arm/mm/dma-mapping.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/arm/mm/dma-mapping.c')
-rw-r--r--arch/arm/mm/dma-mapping.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c
index f1e2922..9376f85 100644
--- a/arch/arm/mm/dma-mapping.c
+++ b/arch/arm/mm/dma-mapping.c
@@ -2277,7 +2277,7 @@ EXPORT_SYMBOL_GPL(arm_iommu_attach_device);
* @dev: valid struct device pointer
*
* Detaches the provided device from a previously attached map.
- * This voids the dma operations (dma_map_ops pointer)
+ * This overwrites the dma_ops pointer with appropriate non-IOMMU ops.
*/
void arm_iommu_detach_device(struct device *dev)
{
@@ -2390,4 +2390,6 @@ void arch_teardown_dma_ops(struct device *dev)
return;
arm_teardown_iommu_dma_ops(dev);
+ /* Let arch_setup_dma_ops() start again from scratch upon re-probe */
+ set_dma_ops(dev, NULL);
}

Privacy Policy