linux-kernel - [PATCH v1 3/6] iommu/exynos-iommu: Set release_domain to exynos_identity

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Message-ID: <56175bec385d24af9eb2a38632e1d6ce889025e3.1760312540.git.nicolinc@nvidia.com>
Date: Sun, 12 Oct 2025 16:57:39 -0700
From: Nicolin Chen <nicolinc@...dia.com>
To: <joro@...tes.org>, <jgg@...dia.com>, <kevin.tian@...el.com>
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Subject: [PATCH v1 3/6] iommu/exynos-iommu: Set release_domain to exynos_identity_domain

Following a coming core change to pass in the old domain pointer into the
attach_dev op and its callbacks, exynos_iommu_identity_attach() will need
this new argument too, which the release_device op doesn't provide.

Instead, the core provides a release_domain to attach to the device prior
to invoking the release_device callback. Thus, simply use that.

Signed-off-by: Nicolin Chen <nicolinc@...dia.com>
---
 drivers/iommu/exynos-iommu.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/iommu/exynos-iommu.c b/drivers/iommu/exynos-iommu.c
index b6edd178fe25e..0857519ca7188 100644
--- a/drivers/iommu/exynos-iommu.c
+++ b/drivers/iommu/exynos-iommu.c
@@ -1429,8 +1429,6 @@ static void exynos_iommu_release_device(struct device *dev)
 	struct exynos_iommu_owner *owner = dev_iommu_priv_get(dev);
 	struct sysmmu_drvdata *data;
 
-	WARN_ON(exynos_iommu_identity_attach(&exynos_identity_domain, dev));
-
 	list_for_each_entry(data, &owner->controllers, owner_node)
 		device_link_del(data->link);
 }
@@ -1476,6 +1474,7 @@ static int exynos_iommu_of_xlate(struct device *dev,
 
 static const struct iommu_ops exynos_iommu_ops = {
 	.identity_domain = &exynos_identity_domain,
+	.release_domain = &exynos_identity_domain,
 	.domain_alloc_paging = exynos_iommu_domain_alloc_paging,
 	.device_group = generic_device_group,
 	.probe_device = exynos_iommu_probe_device,
-- 
2.43.0