diff options
| -rw-r--r-- | drivers/iommu/amd/pasid.c | 3 | ||||
| -rw-r--r-- | include/linux/iommu.h | 3 |
2 files changed, 5 insertions, 1 deletions
diff --git a/drivers/iommu/amd/pasid.c b/drivers/iommu/amd/pasid.c index d1dfc745f55e..8c73a30c2800 100644 --- a/drivers/iommu/amd/pasid.c +++ b/drivers/iommu/amd/pasid.c @@ -109,6 +109,9 @@ int iommu_sva_set_dev_pasid(struct iommu_domain *domain, unsigned long flags; int ret = -EINVAL; + if (old) + return -EOPNOTSUPP; + /* PASID zero is used for requests from the I/O device without PASID */ if (!is_pasid_valid(dev_data, pasid)) return ret; diff --git a/include/linux/iommu.h b/include/linux/iommu.h index 32dce80aa7fd..27f923450a7c 100644 --- a/include/linux/iommu.h +++ b/include/linux/iommu.h @@ -616,7 +616,8 @@ struct iommu_ops { * * EBUSY - device is attached to a domain and cannot be changed * * ENODEV - device specific errors, not able to be attached * * <others> - treated as ENODEV by the caller. Use is discouraged - * @set_dev_pasid: set an iommu domain to a pasid of device + * @set_dev_pasid: set or replace an iommu domain to a pasid of device. The pasid of + * the device should be left in the old config in error case. * @map_pages: map a physically contiguous set of pages of the same size to * an iommu domain. * @unmap_pages: unmap a number of pages of the same size from an iommu domain |