[PATCH] iommu/arm-smmu-v3: Restore prints in arm_smmu_attach_dev()

[Jason Gunthorpe]

On Tue, Nov 08, 2022 at 11:07:13PM -0800, Nicolin Chen wrote:
> The prints for incompatible failures in arm_smmu_attach_dev() might be
> still useful for error diagnosis. As VFIO and IOMMUFD would do testing
> attach() call, having previous dev_err() isn't ideal either.
> 
> Add the prints back using dev_dbg().
> 
> Suggested-by: Will Deacon <will at kernel.org>
> Signed-off-by: Nicolin Chen <nicolinc at nvidia.com>
> ---
>  drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 7 +++++++
>  1 file changed, 7 insertions(+)

You should probably include a fixes line

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

Jason