Re: [PATCH v5 5/6] iommu: Use EINVAL for incompatible device/domain in ->attach_dev

Jason Gunthorpe
2022-09-22T17:51:01Z

On Thu, Sep 22, 2022 at 01:54:34AM -0700, Nicolin Chen wrote:
> Following the new rules in include/linux/iommu.h kdocs, update all drivers
> ->attach_dev callback functions to return EINVAL in the failure paths that
> are related to domain incompatibility.
>
> Also, drop adjacent error prints to prevent a kernel log spam.
>
> Reviewed-by: Jean-Philippe Brucker <jean-philippe@linaro.org>
> Reviewed-by: Lu Baolu <baolu.lu@linux.intel.com>
> Reviewed-by: Kevin Tian <kevin.tian@intel.com>
> Signed-off-by: Nicolin Chen <nicolinc@nvidia.com>
> ---
> drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 11 +----------
> drivers/iommu/arm/arm-smmu/arm-smmu.c | 3 ---
> drivers/iommu/arm/arm-smmu/qcom_iommu.c | 7 +------
> drivers/iommu/intel/iommu.c | 10 +++-------
> drivers/iommu/ipmmu-vmsa.c | 2 --
> drivers/iommu/omap-iommu.c | 2 +-
> drivers/iommu/sprd-iommu.c | 4 +---
> drivers/iommu/tegra-gart.c | 2 +-
> drivers/iommu/virtio-iommu.c | 3 +--
> 9 files changed, 9 insertions(+), 35 deletions(-)

Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>

Jason