From: Yi Liu <yi.l.liu@intel.com>
intel_iommu_set_dev_pasid() is only supposed to be used by paging domain,
so limit it.
Reviewed-by: Lu Baolu <baolu.lu@linux.intel.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Signed-off-by: Yi Liu <yi.l.liu@intel.com>
Link: https://lore.kernel.org/r/20241107122234.7424-9-yi.l.liu@intel.com
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
---
drivers/iommu/intel/iommu.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/iommu/intel/iommu.c b/drivers/iommu/intel/iommu.c
index d19bd0ff5220..f3ccbe516dcb 100644
--- a/drivers/iommu/intel/iommu.c
+++ b/drivers/iommu/intel/iommu.c
@@ -4154,6 +4154,9 @@ static int intel_iommu_set_dev_pasid(struct iommu_domain *domain,
struct dev_pasid_info *dev_pasid;
int ret;
+ if (WARN_ON_ONCE(!(domain->type & __IOMMU_DOMAIN_PAGING)))
+ return -EINVAL;
+
if (!pasid_supported(iommu) || dev_is_real_dma_subdevice(dev))
return -EOPNOTSUPP;
@@ -4182,8 +4185,7 @@ static int intel_iommu_set_dev_pasid(struct iommu_domain *domain,
domain_remove_dev_pasid(old, dev, pasid);
- if (domain->type & __IOMMU_DOMAIN_PAGING)
- intel_iommu_debugfs_create_dev_pasid(dev_pasid);
+ intel_iommu_debugfs_create_dev_pasid(dev_pasid);
return 0;
--
2.43.0