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

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Date:   Thu, 3 Aug 2017 16:32:09 +0900
From:   Masahiro Yamada <yamada.masahiro@...ionext.com>
To:     Thomas Gleixner <tglx@...utronix.de>
Cc:     Tomi Sarvela <tomi.p.sarvela@...el.com>,
        Martin Peres <martin.peres@...ux.intel.com>,
        Jeffy Chen <jeffy.chen@...k-chips.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: Suspend-resume failure on Intel Eagle Lake Core2Duo

Hi.

2017-08-01 0:55 GMT+09:00 Thomas Gleixner <tglx@...utronix.de>:
> On Mon, 31 Jul 2017, Tomi Sarvela wrote:
>> On 31/07/17 18:06, Thomas Gleixner wrote:
>> > Can you please remove the patch. And try the following:
>> >
>> > # echo N > /sys/module/printk/parameters/console_suspend
>> >
>> > # echo mem > /sys/power/state
>> >
>> > and log the output of the serial console. That way we might get a clue
>> > where it gets stuck.
>>
>> I'm afraid it hangs right away. No response from SSH, no output to serial.
>
> What means hangs right away? Is there no output at all on the serial
> console? Or does it just stop at some point?
>
> Thanks,
>
>         tglx
>

Sorry for jumping in.
Finally, I found this thread.


My environment is completely different (ARM64 board),
I am also suffering from a hibernation problem
since this commit.


I get no response on the serial console
after "Restarting tasks ... done." log message.


By reverting bf22ff45bed6 ("genirq: Avoid unnecessary low level
irq function calls", I can get hibernation working again.


SW info:
defconfig:  arch/arm64/configs/defconfig
DT       :  arch/arm64/boot/dts/socionext/uniphier-ld20-ref.dts
PSCI     :  ARM Trusted Firmware


SoC info:
CPU      :  Cortex-A72 * 2 + Cortex-A53 * 2
irqchip  :  GICv3 (drivers/irq/irq-gic-v3.c)





-- 
Best Regards
Masahiro Yamada