linux-kernel - [PATCH] iommu: Use dev_iommu_ops() for probe

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Message-Id: <84b891ba40e4cea924ee4ea1167b00e87ad38b18.1650630616.git.robin.murphy@arm.com>
Date:   Fri, 22 Apr 2022 13:33:27 +0100
From:   Robin Murphy <robin.murphy@....com>
To:     joro@...tes.org, will@...nel.org
Cc:     iommu@...ts.linux-foundation.org, linux-kernel@...r.kernel.org
Subject: [PATCH] iommu: Use dev_iommu_ops() for probe_finalize

The ->probe_finalize hook only runs after ->probe_device succeeds,
so we can move that over to the new dev_iommu_ops() as well.

Signed-off-by: Robin Murphy <robin.murphy@....com>
---

Another cheeky little one which doesn't need to wait...

 drivers/iommu/iommu.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c
index 1b8dcda5fbe4..8825a4628e46 100644
--- a/drivers/iommu/iommu.c
+++ b/drivers/iommu/iommu.c
@@ -315,7 +315,7 @@ static int __iommu_probe_device(struct device *dev, struct list_head *group_list
 
 int iommu_probe_device(struct device *dev)
 {
-	const struct iommu_ops *ops = dev->bus->iommu_ops;
+	const struct iommu_ops *ops;
 	struct iommu_group *group;
 	int ret;
 
@@ -352,6 +352,7 @@ int iommu_probe_device(struct device *dev)
 	mutex_unlock(&group->mutex);
 	iommu_group_put(group);
 
+	ops = dev_iommu_ops(dev);
 	if (ops->probe_finalize)
 		ops->probe_finalize(dev);
 
-- 
2.35.3.dirty