[PATCH] iommu/ipmmu-vmsa: Use iommu_device_sysfs_add()/remove()

[Magnus Damm]

From: Magnus Damm <damm+renesas@xxxxxxxxxxxxx>

Extend the driver to make use of iommu_device_sysfs_add()/remove()
functions to hook up initial sysfs support.

Suggested-by: Joerg Roedel <jroedel@xxxxxxx>
Signed-off-by: Magnus Damm <damm+renesas@xxxxxxxxxxxxx>
---

 Applies on top of next-20170817

 drivers/iommu/ipmmu-vmsa.c |    6 ++++++
 1 file changed, 6 insertions(+)

--- 0001/drivers/iommu/ipmmu-vmsa.c
+++ work/drivers/iommu/ipmmu-vmsa.c	2017-08-21 14:40:13.940607110 +0900
@@ -953,6 +953,11 @@ static int ipmmu_probe(struct platform_d
 
 	ipmmu_device_reset(mmu);
 
+	ret = iommu_device_sysfs_add(&mmu->iommu, &pdev->dev, NULL,
+				     dev_name(&pdev->dev));
+	if (ret)
+		return ret;
+
 	iommu_device_set_ops(&mmu->iommu, &ipmmu_ops);
 	iommu_device_set_fwnode(&mmu->iommu, &pdev->dev.of_node->fwnode);
 
@@ -975,6 +980,7 @@ static int ipmmu_remove(struct platform_
 {
 	struct ipmmu_vmsa_device *mmu = platform_get_drvdata(pdev);
 
+	iommu_device_sysfs_remove(&mmu->iommu);
 	iommu_device_unregister(&mmu->iommu);
 
 #if defined(CONFIG_ARM) && !defined(CONFIG_IOMMU_DMA)