[PATCH v4 10/16] iommu/arm-smmu-v3: Pass smmu_domain to arm_enable/disable_ats()

[Jason Gunthorpe <jgg@nvidia.com>]

The caller already has the domain, just pass it in. A following patch will
remove master->domain.

Tested-by: Shameer Kolothum <shameerali.kolothum.thodi@huawei.com>
Tested-by: Nicolin Chen <nicolinc@nvidia.com>
Tested-by: Moritz Fischer <moritzf@google.com>
Reviewed-by: Nicolin Chen <nicolinc@nvidia.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
---
 drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 13 ++++++-------
 1 file changed, 6 insertions(+), 7 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 09b40ba35a9cee..d7b0cea140f12b 100644
--- a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c
+++ b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c
@@ -2447,12 +2447,12 @@ static bool arm_smmu_ats_supported(struct arm_smmu_master *master)
 	return dev_is_pci(dev) && pci_ats_supported(to_pci_dev(dev));
 }
 
-static void arm_smmu_enable_ats(struct arm_smmu_master *master)
+static void arm_smmu_enable_ats(struct arm_smmu_master *master,
+				struct arm_smmu_domain *smmu_domain)
 {
 	size_t stu;
 	struct pci_dev *pdev;
 	struct arm_smmu_device *smmu = master->smmu;
-	struct arm_smmu_domain *smmu_domain = master->domain;
 
 	/* Don't enable ATS at the endpoint if it's not enabled in the STE */
 	if (!master->ats_enabled)
@@ -2468,10 +2468,9 @@ static void arm_smmu_enable_ats(struct arm_smmu_master *master)
 		dev_err(master->dev, "Failed to enable ATS (STU %zu)\n", stu);
 }
 
-static void arm_smmu_disable_ats(struct arm_smmu_master *master)
+static void arm_smmu_disable_ats(struct arm_smmu_master *master,
+				 struct arm_smmu_domain *smmu_domain)
 {
-	struct arm_smmu_domain *smmu_domain = master->domain;
-
 	if (!master->ats_enabled)
 		return;
 
@@ -2540,7 +2539,7 @@ static void arm_smmu_detach_dev(struct arm_smmu_master *master)
 	if (!smmu_domain)
 		return;
 
-	arm_smmu_disable_ats(master);
+	arm_smmu_disable_ats(master, smmu_domain);
 
 	spin_lock_irqsave(&smmu_domain->devices_lock, flags);
 	list_del(&master->domain_head);
@@ -2662,7 +2661,7 @@ static int arm_smmu_attach_dev(struct iommu_domain *domain, struct device *dev)
 		break;
 	}
 
-	arm_smmu_enable_ats(master);
+	arm_smmu_enable_ats(master, smmu_domain);
 	goto out_unlock;
 
 out_list_del:
-- 
2.43.0