On Sun, Sep 13, 2020 at 01:45:36PM -0400, Mark Salter wrote:
> @@ -1483,11 +1473,23 @@ xgene_pmu_dev_ctx *acpi_get_pmu_hw_inf(struct 
> xgene_pmu *xgene_pmu,
>               return NULL;
>  
>       INIT_LIST_HEAD(&resource_list);
> -     rc = acpi_dev_get_resources(adev, &resource_list,
> -                                 acpi_pmu_dev_add_resource, &res);
> +     rc = acpi_dev_get_resources(adev, &resource_list, NULL, NULL);
> +     if (rc <= 0) {
> +             dev_err(dev, "PMU type %d: No resources found\n", type);
> +             return NULL;
> +     }
> +
> +     list_for_each_entry(rentry, &resource_list, node) {
> +             if (resource_type(rentry->res) == IORESOURCE_MEM) {
> +                     res = *rentry->res;
> +                     rentry = NULL;
> +                     break;
> +             }
> +     }
>       acpi_dev_free_resource_list(&resource_list);
> -     if (rc < 0) {
> -             dev_err(dev, "PMU type %d: No resource address found\n", type);
> +
> +     if (rentry) {

I'm curious as to why you've had to change the failure logic here, setting
rentry to NULL instead of checking 'rentry->res' like the TX2 driver (which
I don't immediately understand at first glance).

Will

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