From: Magnus Damm <damm+rene...@opensource.se> Extend the driver to make use of iommu_device_register()/unregister() functions together with iommu_device_set_ops() and iommu_set_fwnode().
These used to be part of the earlier posted 64-bit ARM (r8a7795) series but it turns out that these days they are required on 32-bit ARM as well. Signed-off-by: Magnus Damm <damm+rene...@opensource.se> --- Changes since V1: - Perform iommu_device_set_ops() and iommu_device_set_fwnode() before iommu_device_register() - thanks Robin! drivers/iommu/ipmmu-vmsa.c | 10 ++++++++++ 1 file changed, 10 insertions(+) --- 0001/drivers/iommu/ipmmu-vmsa.c +++ work/drivers/iommu/ipmmu-vmsa.c 2017-07-17 21:01:47.140607110 +0900 @@ -35,6 +35,7 @@ struct ipmmu_vmsa_device { struct device *dev; void __iomem *base; + struct iommu_device iommu; struct list_head list; unsigned int num_utlbs; @@ -1054,6 +1055,13 @@ static int ipmmu_probe(struct platform_d ipmmu_device_reset(mmu); + iommu_device_set_ops(&mmu->iommu, &ipmmu_ops); + iommu_device_set_fwnode(&mmu->iommu, &pdev->dev.of_node->fwnode); + + ret = iommu_device_register(&mmu->iommu); + if (ret) + return ret; + /* * We can't create the ARM mapping here as it requires the bus to have * an IOMMU, which only happens when bus_set_iommu() is called in @@ -1077,6 +1085,8 @@ static int ipmmu_remove(struct platform_ list_del(&mmu->list); spin_unlock(&ipmmu_devices_lock); + iommu_device_unregister(&mmu->iommu); + #if defined(CONFIG_ARM) && !defined(CONFIG_IOMMU_DMA) arm_iommu_release_mapping(mmu->mapping); #endif