linux-kernel - [PATCH v1 2/6] iommu/arm-smmu-v3: Set release_domain to arm_smmu_blocked

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Message-ID: <cb0cd5a2d8b68dfd77cf9b94168254f3ae62d8ac.1760312540.git.nicolinc@nvidia.com>
Date: Sun, 12 Oct 2025 16:57:38 -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 2/6] iommu/arm-smmu-v3: Set release_domain to arm_smmu_blocked_domain

Since the core now takes care of the require_direct case for the release
domain, simply use that via the release_domain op.

Signed-off-by: Nicolin Chen <nicolinc@...dia.com>
---
 drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 7 +------
 1 file changed, 1 insertion(+), 6 deletions(-)

diff --git a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c
index 2a8b46b948f05..2125ebfc9a70e 100644
--- a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c
+++ b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c
@@ -3582,12 +3582,6 @@ static void arm_smmu_release_device(struct device *dev)
 
 	WARN_ON(master->iopf_refcount);
 
-	/* Put the STE back to what arm_smmu_init_strtab() sets */
-	if (dev->iommu->require_direct)
-		arm_smmu_attach_dev_identity(&arm_smmu_identity_domain, dev);
-	else
-		arm_smmu_attach_dev_blocked(&arm_smmu_blocked_domain, dev);
-
 	arm_smmu_disable_pasid(master);
 	arm_smmu_remove_master(master);
 	if (arm_smmu_cdtab_allocated(&master->cd_table))
@@ -3678,6 +3672,7 @@ static int arm_smmu_def_domain_type(struct device *dev)
 static const struct iommu_ops arm_smmu_ops = {
 	.identity_domain	= &arm_smmu_identity_domain,
 	.blocked_domain		= &arm_smmu_blocked_domain,
+	.release_domain		= &arm_smmu_blocked_domain,
 	.capable		= arm_smmu_capable,
 	.hw_info		= arm_smmu_hw_info,
 	.domain_alloc_sva       = arm_smmu_sva_domain_alloc,
-- 
2.43.0