Messages in this thread | | | Subject | Re: Suspend-resume failure on Intel Eagle Lake Core2Duo | From | Marc Zyngier <> | Date | Thu, 3 Aug 2017 09:41:49 +0100 |
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Hi Masahiro,
On 03/08/17 08:32, Masahiro Yamada wrote: > Hi. > > 2017-08-01 0:55 GMT+09:00 Thomas Gleixner <tglx@linutronix.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)
Let me take an educated guess: It feels like your firmware doesn't save/restore the GIC context across suspend/resume. Is that something you could check, assuming you have access to the firmware source code?
Thanks,
M. -- Jazz is not dead. It just smells funny...
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