From: Jason Gunthorpe <jgg@nvidia.com> mainline inclusion from mainline-v6.9-rc1 commit d550ddc5b789f258cb5ce3bfe74af6d5383589b5 category: feature bugzilla: https://gitee.com/openeuler/kernel/issues/IB4WDJ CVE: NA Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?i... -------------------------------- 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> Reviewed-by: Mostafa Saleh <smostafa@google.com> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com> Link: https://lore.kernel.org/r/9-v6-96275f25c39d+2d4-smmuv3_newapi_p1_jgg@nvidia.... Signed-off-by: Will Deacon <will@kernel.org> Signed-off-by: Kunkun Jiang <jiangkunkun@huawei.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 e306cbc2fe94..d91bb0cbc046 100644 --- a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c +++ b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c @@ -2655,12 +2655,12 @@ 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) @@ -2676,10 +2676,9 @@ 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; @@ -2748,7 +2747,7 @@ 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); @@ -2870,7 +2869,7 @@ 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: -- 2.33.0