Sequence of suspend/resume calls

Sequence of suspend/resume calls

[Ryan]

Hello,


Is it possible for the resume function of a particular driver to be
called before resume function of others are being called?

Suppose, I have a driver - example_suspend, example_resume - Is it
possible for example_suspend to be called last
and example_resume to be called first thing as soon as cpu is woken up?

If so, how can i do that?

Thanks,
ryan

Re: Sequence of suspend/resume calls

[Zhaoyang Huang]

platform devices are suspended according to the sequences on the chain
list. you can try to xxx_get_device which you want to suspend first in
your probe function and return EPROBE_DEFER if xxx_get_device failed.

On 19 July 2016 at 09:34, Ryan <ryanphilips19@googlemail.com> wrote:
> Hello,
>
>
> Is it possible for the resume function of a particular driver to be
> called before resume function of others are being called?
>
> Suppose, I have a driver - example_suspend, example_resume - Is it
> possible for example_suspend to be called last
> and example_resume to be called first thing as soon as cpu is woken up?
>
> If so, how can i do that?
>
> Thanks,
> ryan
> --
> To unsubscribe from this list: send the line "unsubscribe linux-pm" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html

Re: Sequence of suspend/resume calls

[Chenhui Zhao]

I don't know your case in detail. However, you may try to register a
syscore ops.
Please refer to drivers/base/syscore.c.

These callbacks will run when suspend_enter() calls syscore_suspend() and
syscore_resume() in kernel/power/suspend.c.

Chenhui
Thanks

On Tue, Jul 19, 2016 at 9:34 AM, Ryan <ryanphilips19@googlemail.com> wrote:
>
> Hello,
>
>
> Is it possible for the resume function of a particular driver to be
> called before resume function of others are being called?
>
> Suppose, I have a driver - example_suspend, example_resume - Is it
> possible for example_suspend to be called last
> and example_resume to be called first thing as soon as cpu is woken up?
>
> If so, how can i do that?
>
> Thanks,
> ryan
> --
> To unsubscribe from this list: send the line "unsubscribe linux-pm" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html

Re: Sequence of suspend/resume calls

[Lukas Wunner]

On Mon, Jul 18, 2016 at 06:34:10PM -0700, Ryan wrote:
> Is it possible for the resume function of a particular driver to be
> called before resume function of others are being called?

device_pm_wait_for_dev()

Best regards,

Lukas