[PATCH v5 06/27] iommu/arm-smmu-v3: Consolidate clearing a CD table entry

[Nicolin Chen]

On Mon, Mar 04, 2024 at 07:43:54PM -0400, Jason Gunthorpe wrote:
> A cleared entry is all 0's. Make arm_smmu_clear_cd() do this sequence.
> 
> If we are clearing an entry and for some reason it is not already
> allocated in the CD table then something has gone wrong.
> 
> Tested-by: Nicolin Chen <nicolinc at nvidia.com>
> Signed-off-by: Jason Gunthorpe <jgg at nvidia.com> 

Reviewed-by: Nicolin Chen <nicolinc at nvidia.com>