diff options
| -rw-r--r-- | drivers/iommu/arm-smmu-v3.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/iommu/arm-smmu-v3.c b/drivers/iommu/arm-smmu-v3.c index 2734beb709e0..2d96cf0023dd 100644 --- a/drivers/iommu/arm-smmu-v3.c +++ b/drivers/iommu/arm-smmu-v3.c @@ -1892,9 +1892,13 @@ static int arm_smmu_enable_ats(struct arm_smmu_master *master) static void arm_smmu_disable_ats(struct arm_smmu_master *master) { + struct arm_smmu_cmdq_ent cmd; + if (!master->ats_enabled || !dev_is_pci(master->dev)) return; + arm_smmu_atc_inv_to_cmd(0, 0, 0, &cmd); + arm_smmu_atc_inv_master(master, &cmd); pci_disable_ats(to_pci_dev(master->dev)); master->ats_enabled = false; } @@ -1914,7 +1918,6 @@ static void arm_smmu_detach_dev(struct arm_smmu_master *master) master->domain = NULL; arm_smmu_install_ste_for_dev(master); - /* Disabling ATS invalidates all ATC entries */ arm_smmu_disable_ats(master); } |