From: "Rafael J. Wysocki" <rafael@kernel.org>
To: Heiner Kallweit <hkallweit1@gmail.com>
Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net>,
Linux PM <linux-pm@vger.kernel.org>
Subject: Re: Something like devm_pm_runtime_enable desirable?
Date: Mon, 27 Nov 2017 02:21:10 +0100 [thread overview]
Message-ID: <CAJZ5v0g_vg+ojdZs7fNwyPF3RVOMWW0aHB9jDKTV0nt5ivP7_Q@mail.gmail.com> (raw)
In-Reply-To: <66504d0c-1b30-8b36-fd11-bd9abc2eb41a@gmail.com>
On Mon, Nov 27, 2017 at 12:13 AM, Heiner Kallweit <hkallweit1@gmail.com> wrote:
> I have a runtime pm enabled driver which uses device-managed resources
> only and therefore wouldn't need a remove callback. The remove callback
> does pm_runtime_disable only.
> Therefore I'm wondering whether something like devm_pm_runtime_enable
> would be desirable doing the pm_runtime_disable automagically.
>
> I can't really imagine that I'm the first one with this idea so I
> guess there is some reason why it doesn't exist yet ..
You also need to ensure that the device is left in the state in which
your driver will expect it to be in on the next probe in case the
driver module is unloaded and loaded again. I'm not sure if devm_ can
do that generically enough.
Thanks,
Rafael
next prev parent reply other threads:[~2017-11-27 1:21 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-11-26 23:13 Something like devm_pm_runtime_enable desirable? Heiner Kallweit
2017-11-27 1:21 ` Rafael J. Wysocki [this message]
2017-11-28 21:12 ` Heiner Kallweit
2017-11-28 22:04 ` Rafael J. Wysocki
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