linux-kernel - Re: [PATCH 1/2] PM: runtime: Define pm_runtime

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Message-ID: <CAJZ5v0hwjLqGE8CWOVhckCpvvRa1EEazFhh_pcKT_4_CnT7j8Q@mail.gmail.com>
Date: Wed, 23 Apr 2025 14:21:45 +0200
From: "Rafael J. Wysocki" <rafael@...nel.org>
To: Alex Williamson <alex.williamson@...hat.com>
Cc: bhelgaas@...gle.com, rafael@...nel.org, linux-pci@...r.kernel.org, 
	linux-pm@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/2] PM: runtime: Define pm_runtime_put cleanup helper

On Wed, Apr 23, 2025 at 1:05 AM Alex Williamson
<alex.williamson@...hat.com> wrote:
>
> Define a cleanup helper for use with __free to automatically drop the
> device usage count when out of scope.
>
> Signed-off-by: Alex Williamson <alex.williamson@...hat.com>

Acked-by: Rafael J. Wysocki <rafael@...nel.org>

> ---
>  include/linux/pm_runtime.h | 2 ++
>  1 file changed, 2 insertions(+)
>
> diff --git a/include/linux/pm_runtime.h b/include/linux/pm_runtime.h
> index 7fb5a459847e..69d4b2929ee6 100644
> --- a/include/linux/pm_runtime.h
> +++ b/include/linux/pm_runtime.h
> @@ -466,6 +466,8 @@ static inline int pm_runtime_put(struct device *dev)
>         return __pm_runtime_idle(dev, RPM_GET_PUT | RPM_ASYNC);
>  }
>
> +DEFINE_FREE(pm_runtime_put, struct device *, if (_T) pm_runtime_put(_T))
> +
>  /**
>   * __pm_runtime_put_autosuspend - Drop device usage counter and queue autosuspend if 0.
>   * @dev: Target device.
> --
> 2.48.1
>