linux-kernel - [RFC PATCH v1 7/8] iommu/arm-smmu-v3: check for domain initialization using pgtbl

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Message-ID: <20230818021629.RFC.v1.7.I65dd382de382428dcb33333342b35405903ac768@changeid>
Date:   Fri, 18 Aug 2023 02:16:29 +0800
From:   Michael Shavit <mshavit@...gle.com>
To:     iommu@...ts.linux.dev, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org
Cc:     will@...nel.org, jgg@...dia.com, nicolinc@...dia.com,
        tina.zhang@...el.com, jean-philippe@...aro.org,
        robin.murphy@....com, Michael Shavit <mshavit@...gle.com>
Subject: [RFC PATCH v1 7/8] iommu/arm-smmu-v3: check for domain initialization
 using pgtbl_ops

In order to remove smmu_domain->smmu in the next commit

Signed-off-by: Michael Shavit <mshavit@...gle.com>
---

 drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

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 7f88b2b19cbe5..c9f89f4f47721 100644
--- a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c
+++ b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c
@@ -2918,7 +2918,7 @@ static int arm_smmu_enable_nesting(struct iommu_domain *domain)
 	int ret = 0;
 
 	mutex_lock(&smmu_domain->init_mutex);
-	if (smmu_domain->smmu)
+	if (smmu_domain->pgtbl_ops)
 		ret = -EPERM;
 	else
 		smmu_domain->stage = ARM_SMMU_DOMAIN_NESTED;
-- 
2.42.0.rc1.204.g551eb34607-goog