linux-kernel - [PATCH 1/3] iommu: Use dev_iommu_ops() for probe

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Date:   Tue, 21 Jun 2022 16:14:25 +0100
From:   Robin Murphy <robin.murphy@....com>
To:     joro@...tes.org, will@...nel.org
Cc:     iommu@...ts.linux-foundation.org, iommu@...ts.linux.dev,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Lu Baolu <baolu.lu@...ux.intel.com>
Subject: [PATCH 1/3] 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.

Reviewed-by: Lu Baolu <baolu.lu@...ux.intel.com>
Signed-off-by: Robin Murphy <robin.murphy@....com>
---
 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 847ad47a2dfd..06d6989f07f6 100644
--- a/drivers/iommu/iommu.c
+++ b/drivers/iommu/iommu.c
@@ -272,7 +272,7 @@ 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;
 
@@ -313,6 +313,7 @@ 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);
 
-- 
2.36.1.dirty