linux-kernel - [PATCH v3 5/5] iommu: virtio: Use generic_iommu_put_resv

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Date:   Wed, 18 Dec 2019 14:42:05 +0100
From:   Thierry Reding <thierry.reding@...il.com>
To:     Joerg Roedel <joro@...tes.org>
Cc:     Will Deacon <will@...nel.org>, Robin Murphy <robin.murphy@....com>,
        Jean-Philippe Brucker <jean-philippe@...aro.org>,
        Christoph Hellwig <hch@...radead.org>,
        iommu@...ts.linux-foundation.org,
        linux-arm-kernel@...ts.infradead.org,
        virtualization@...ts.linux-foundation.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH v3 5/5] iommu: virtio: Use generic_iommu_put_resv_regions()

From: Thierry Reding <treding@...dia.com>

Use the new standard function instead of open-coding it.

Cc: Jean-Philippe Brucker <jean-philippe@...aro.org>
Cc: virtualization@...ts.linux-foundation.org
Reviewed-by: Jean-Philippe Brucker <jean-philippe@...aro.org>
Signed-off-by: Thierry Reding <treding@...dia.com>
---
 drivers/iommu/virtio-iommu.c | 14 +++-----------
 1 file changed, 3 insertions(+), 11 deletions(-)

diff --git a/drivers/iommu/virtio-iommu.c b/drivers/iommu/virtio-iommu.c
index 315c7cc4f99d..cce329d71fba 100644
--- a/drivers/iommu/virtio-iommu.c
+++ b/drivers/iommu/virtio-iommu.c
@@ -837,14 +837,6 @@ static void viommu_get_resv_regions(struct device *dev, struct list_head *head)
 	iommu_dma_get_resv_regions(dev, head);
 }
 
-static void viommu_put_resv_regions(struct device *dev, struct list_head *head)
-{
-	struct iommu_resv_region *entry, *next;
-
-	list_for_each_entry_safe(entry, next, head, list)
-		kfree(entry);
-}
-
 static struct iommu_ops viommu_ops;
 static struct virtio_driver virtio_iommu_drv;
 
@@ -914,7 +906,7 @@ static int viommu_add_device(struct device *dev)
 err_unlink_dev:
 	iommu_device_unlink(&viommu->iommu, dev);
 err_free_dev:
-	viommu_put_resv_regions(dev, &vdev->resv_regions);
+	generic_iommu_put_resv_regions(dev, &vdev->resv_regions);
 	kfree(vdev);
 
 	return ret;
@@ -932,7 +924,7 @@ static void viommu_remove_device(struct device *dev)
 
 	iommu_group_remove_device(dev);
 	iommu_device_unlink(&vdev->viommu->iommu, dev);
-	viommu_put_resv_regions(dev, &vdev->resv_regions);
+	generic_iommu_put_resv_regions(dev, &vdev->resv_regions);
 	kfree(vdev);
 }
 
@@ -961,7 +953,7 @@ static struct iommu_ops viommu_ops = {
 	.remove_device		= viommu_remove_device,
 	.device_group		= viommu_device_group,
 	.get_resv_regions	= viommu_get_resv_regions,
-	.put_resv_regions	= viommu_put_resv_regions,
+	.put_resv_regions	= generic_iommu_put_resv_regions,
 	.of_xlate		= viommu_of_xlate,
 };
 
-- 
2.24.1