Re: [PATCH v10 2/5] iommu/arm-smmu: ioremap smmu mmio region before implementation init

[Robin Murphy]

On 2020-07-08 06:00, Krishna Reddy wrote:
> ioremap smmu mmio region before calling into implementation init.
> This is necessary to allow mapped address available during vendor
> specific implementation init.

Reviewed-by: Robin Murphy <robin.murphy@xxxxxxx>

> Signed-off-by: Krishna Reddy <vdumpa@xxxxxxxxxx>
> ---
>   drivers/iommu/arm-smmu.c | 8 ++++----
>   1 file changed, 4 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/iommu/arm-smmu.c b/drivers/iommu/arm-smmu.c
> index d2054178df35..e03e873d3bca 100644
> --- a/drivers/iommu/arm-smmu.c
> +++ b/drivers/iommu/arm-smmu.c
> @@ -2120,10 +2120,6 @@ static int arm_smmu_device_probe(struct platform_device *pdev)
>   	if (err)
>   		return err;
>   
> -	smmu = arm_smmu_impl_init(smmu);
> -	if (IS_ERR(smmu))
> -		return PTR_ERR(smmu);
> -
>   	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
>   	ioaddr = res->start;
>   	smmu->base = devm_ioremap_resource(dev, res);
> @@ -2135,6 +2131,10 @@ static int arm_smmu_device_probe(struct platform_device *pdev)
>   	 */
>   	smmu->numpage = resource_size(res);
>   
> +	smmu = arm_smmu_impl_init(smmu);
> +	if (IS_ERR(smmu))
> +		return PTR_ERR(smmu);
> +
>   	num_irqs = 0;
>   	while ((res = platform_get_resource(pdev, IORESOURCE_IRQ, num_irqs))) {
>   		num_irqs++;