linux-kernel - Re: [PATCH] driver core: Ensure proper suspend/resume ordering

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Message-ID: <CAJZ5v0jAvvG2vDEOP=yrp11xzai0tiLUuZJCebHihQ-wbFM3PQ@mail.gmail.com>
Date:	Fri, 18 Sep 2015 02:03:24 +0200
From:	"Rafael J. Wysocki" <rafael@...nel.org>
To:	Grygorii Strashko <grygorii.strashko@...com>
Cc:	"Rafael J. Wysocki" <rjw@...ysocki.net>,
	Alan Stern <stern@...land.harvard.edu>,
	Thierry Reding <thierry.reding@...il.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	"Rafael J. Wysocki" <rafael.j.wysocki@...el.com>,
	Tomeu Vizoso <tomeu.vizoso@...labora.com>,
	"linux-pm@...r.kernel.org" <linux-pm@...r.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] driver core: Ensure proper suspend/resume ordering

On Fri, Sep 18, 2015 at 1:59 AM, Rafael J. Wysocki <rafael@...nel.org> wrote:
> Hi,
>
> On Thu, Sep 17, 2015 at 5:48 PM, Grygorii Strashko
> <grygorii.strashko@...com> wrote:

[cut]

>
> In any case, maybe call that from dpm_suspend_start() after
> dpm_prepare() has run successfully?  This is the point we need to
> start to block probing after all.

Actually, even before dpm_prepare().

>
>> +       }
>> +
>>         if (error)
>>                 thaw_processes();
>>         return error;
>> @@ -190,6 +197,7 @@ void thaw_processes(void)
>>                 atomic_dec(&system_freezing_cnt);
>>         pm_freezing = false;
>>         pm_nosig_freezing = false;
>> +       device_force_probe_deferral(false);
>
> And why don't you call that from dpm_resume_end()?
>
>>
>>         oom_killer_enable();
>>
>> --

Thanks,
Rafael
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