[PATCH 4/7] iommu/sprd: Convert to generic_single_device_group()

[Jason Gunthorpe]

Use the new helper.

Signed-off-by: Jason Gunthorpe <jgg at nvidia.com>
---
 drivers/iommu/sprd-iommu.c | 24 ++----------------------
 1 file changed, 2 insertions(+), 22 deletions(-)

diff --git a/drivers/iommu/sprd-iommu.c b/drivers/iommu/sprd-iommu.c
index 2fa9afebd4f5f0..1ca22368649884 100644
--- a/drivers/iommu/sprd-iommu.c
+++ b/drivers/iommu/sprd-iommu.c
@@ -70,7 +70,6 @@ struct sprd_iommu_device {
 	void __iomem		*base;
 	struct device		*dev;
 	struct iommu_device	iommu;
-	struct iommu_group	*group;
 	struct clk		*eb;
 };
 
@@ -399,13 +398,6 @@ static struct iommu_device *sprd_iommu_probe_device(struct device *dev)
 	return &sdev->iommu;
 }
 
-static struct iommu_group *sprd_iommu_device_group(struct device *dev)
-{
-	struct sprd_iommu_device *sdev = dev_iommu_priv_get(dev);
-
-	return iommu_group_ref_get(sdev->group);
-}
-
 static int sprd_iommu_of_xlate(struct device *dev, struct of_phandle_args *args)
 {
 	struct platform_device *pdev;
@@ -423,7 +415,7 @@ static int sprd_iommu_of_xlate(struct device *dev, struct of_phandle_args *args)
 static const struct iommu_ops sprd_iommu_ops = {
 	.domain_alloc	= sprd_iommu_domain_alloc,
 	.probe_device	= sprd_iommu_probe_device,
-	.device_group	= sprd_iommu_device_group,
+	.device_group	= generic_single_device_group,
 	.of_xlate	= sprd_iommu_of_xlate,
 	.pgsize_bitmap	= SPRD_IOMMU_PAGE_SIZE,
 	.owner		= THIS_MODULE,
@@ -496,16 +488,9 @@ static int sprd_iommu_probe(struct platform_device *pdev)
 	platform_set_drvdata(pdev, sdev);
 	sdev->dev = dev;
 
-	/* All the client devices are in the same iommu-group */
-	sdev->group = iommu_group_alloc();
-	if (IS_ERR(sdev->group)) {
-		ret = PTR_ERR(sdev->group);
-		goto free_page;
-	}
-
 	ret = iommu_device_sysfs_add(&sdev->iommu, dev, NULL, dev_name(dev));
 	if (ret)
-		goto put_group;
+		goto free_page;
 
 	ret = iommu_device_register(&sdev->iommu, &sprd_iommu_ops, dev);
 	if (ret)
@@ -530,8 +515,6 @@ static int sprd_iommu_probe(struct platform_device *pdev)
 	iommu_device_unregister(&sdev->iommu);
 remove_sysfs:
 	iommu_device_sysfs_remove(&sdev->iommu);
-put_group:
-	iommu_group_put(sdev->group);
 free_page:
 	dma_free_coherent(sdev->dev, SPRD_IOMMU_PAGE_SIZE, sdev->prot_page_va, sdev->prot_page_pa);
 	return ret;
@@ -543,9 +526,6 @@ static void sprd_iommu_remove(struct platform_device *pdev)
 
 	dma_free_coherent(sdev->dev, SPRD_IOMMU_PAGE_SIZE, sdev->prot_page_va, sdev->prot_page_pa);
 
-	iommu_group_put(sdev->group);
-	sdev->group = NULL;
-
 	platform_set_drvdata(pdev, NULL);
 	iommu_device_sysfs_remove(&sdev->iommu);
 	iommu_device_unregister(&sdev->iommu);
-- 
2.41.0