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SubjectRe: [PATCH] PM / runtime: Check ignore_children in pm_runtime_need_not_resume()
On 15 January 2018 at 01:46, Rafael J. Wysocki <rjw@rjwysocki.net> wrote:
> From: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
>
> Modify pm_runtime_need_not_resume() to make it avoid taking
> power.child_count for devices with power.ignore_children which
> is consistent with the runtime PM usage of these fields.
>
> Suggested-by: Ulf Hansson <ulf.hansson@linaro.org>
> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>

Kind regards
Uffe

> ---
> drivers/base/power/runtime.c | 3 ++-
> 1 file changed, 2 insertions(+), 1 deletion(-)
>
> Index: linux-pm/drivers/base/power/runtime.c
> ===================================================================
> --- linux-pm.orig/drivers/base/power/runtime.c
> +++ linux-pm/drivers/base/power/runtime.c
> @@ -1616,7 +1616,8 @@ void pm_runtime_drop_link(struct device
> static bool pm_runtime_need_not_resume(struct device *dev)
> {
> return atomic_read(&dev->power.usage_count) <= 1 &&
> - atomic_read(&dev->power.child_count) == 0;
> + (atomic_read(&dev->power.child_count) == 0 ||
> + dev->power.ignore_children);
> }
>
> /**
>

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