linux-kernel - Re: Suspend-resume failure on Intel Eagle Lake Core2Duo

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Message-ID: <alpine.DEB.2.20.1707311032380.2314@nanos>
Date:   Mon, 31 Jul 2017 10:35:00 +0200 (CEST)
From:   Thomas Gleixner <tglx@...utronix.de>
To:     Tomi Sarvela <tomi.p.sarvela@...el.com>
cc:     Martin Peres <martin.peres@...ux.intel.com>,
        jeffy.chen@...k-chips.com, LKML <linux-kernel@...r.kernel.org>,
        "Rafael J. Wysocki" <rjw@...k.pl>
Subject: Re: Suspend-resume failure on Intel Eagle Lake Core2Duo

Rafael,

On Fri, 28 Jul 2017, Tomi Sarvela wrote:
>          rtcwake-1332  [000] d..1    64.411112: suspend_device_irqs:
> presuspend 8 state 00401200
>          rtcwake-1332  [000] d..1    64.411112: __irq_disable: predisable 8
> state 00401200
>          rtcwake-1332  [000] d..1    64.411113: __irq_disable: postdisable 8
> state 00411200
>          rtcwake-1332  [000] d..1    64.411114: suspend_device_irqs:
> postsuspend 8 state 00411200
>          rtcwake-1332  [000] d..1    64.411115: suspend_device_irqs:
> presuspend 9 state 00403300
>          rtcwake-1332  [000] d..1    64.411115: __irq_disable: predisable 9
> state 00403300
>          rtcwake-1332  [000] d..1    64.411116: __irq_disable: postdisable 9
> state 00413300
>          rtcwake-1332  [000] d..1    64.411116: suspend_device_irqs:
> postsuspend 9 state 00413300
>          rtcwake-1332  [000] d..1    64.411117: suspend_device_irqs:

I'm trying to analyze that suspend/resume problem. While staring at the
trace Tomi provided I noticed, that neither the RTC irq nor the ACPI irq
have the wakeup armed bit set, but the system resumes from an RTC
interrupt. That's inconsistent at least, or am I missing something
essential?

Thanks,

	tglx