Re: [patch 61/66] timers: Convert to hotplug state machine
From: Jon Hunter
Date: Tue Jul 26 2016 - 14:23:06 EST
On 26/07/16 15:40, rcochran@xxxxxxxxxxxxx wrote:
> On Tue, Jul 26, 2016 at 10:20:58AM +0100, Jon Hunter wrote:
>> Thanks. I have not tried another ARM based device, but I would be
>> curious if another ARM device sees this or not.
> I do see this stall on socfpga and on zynq, but in both cases the
> suspend mechanism is flakey in other ways, too. At least I can
> reproduce the stall sometimes.
> In your other mail you wrote that you test it like this:
> rtcwake -d rtc1 -m mem -s 3
> But the stall appears only after 20 seconds. So the resume event
> after three seconds (-s 3) is getting lost, right?
I don't think so. I noticed that when the stall occurs, I don't see the
board attempt to transition to the Tegra LP1 power state in suspend and
appears to wake up straight away. So I think the wake-up is seen, but
the stall prevents it from transitioning all the way to LP1.