Re: [PATCHv6 3/3] iommu: arm-smmu-impl: Add sdm845 implementation hook

[Stephen Boyd]

Quoting Sai Prakash Ranjan (2019-09-17 02:45:04)
> diff --git a/drivers/iommu/arm-smmu-impl.c b/drivers/iommu/arm-smmu-impl.c
> index 3f88cd078dd5..d62da270f430 100644
> --- a/drivers/iommu/arm-smmu-impl.c
> +++ b/drivers/iommu/arm-smmu-impl.c
> @@ -9,7 +9,6 @@
>  
>  #include "arm-smmu.h"
>  
> -
>  static int arm_smmu_gr0_ns(int offset)
>  {
>         switch(offset) {

Why is this hunk still around?

> diff --git a/drivers/iommu/arm-smmu-qcom.c b/drivers/iommu/arm-smmu-qcom.c
> new file mode 100644
> index 000000000000..24c071c1d8b0
> --- /dev/null
> +++ b/drivers/iommu/arm-smmu-qcom.c
> @@ -0,0 +1,51 @@
[...]
> +struct arm_smmu_device *qcom_smmu_impl_init(struct arm_smmu_device *smmu)
> +{
> +       struct qcom_smmu *qsmmu;
> +
> +       qsmmu = devm_kzalloc(smmu->dev, sizeof(*qsmmu), GFP_KERNEL);
> +       if (!qsmmu)
> +               return ERR_PTR(-ENOMEM);
> +
> +       qsmmu->smmu = *smmu;
> +
> +       qsmmu->smmu.impl = &qcom_smmu_impl;
> +       devm_kfree(smmu->dev, smmu);

This copy is interesting but OK I guess cavium does it.

> +
> +       return &qsmmu->smmu;
> +}