Re: WARNING: at drivers/opp/core.c:678 dev_pm_opp_set_rate+0x4cc/0x5d4 - on arm x15

From: Viresh Kumar
Date: Tue Oct 20 2020 - 06:36:23 EST


On 16-10-20, 11:15, Viresh Kumar wrote:
> +Dave,
>
> On 15-10-20, 15:26, Naresh Kamboju wrote:
> > The arm x15 boot failed on Linus 's mainline version 5.9.0.
>
> Don't mention the version as this doesn't give the right information.
> You tested it over 5.9 + 5.10-rc1 material.
>
> > I have listed the latest commits on drivers/opp/ .
> >
> > metadata:
> > git branch: master
> > git repo: https://gitlab.com/Linaro/lkft/mirrors/torvalds/linux-mainline
> > git commit: 3e4fb4346c781068610d03c12b16c0cfb0fd24a3
> > git describe: v5.9-4105-g3e4fb4346c78
> > make_kernelversion: 5.9.0
> > kernel-config:
> > https://builds.tuxbuild.com/2BB2g61t29VaadVLXEl4cQ/kernel.config
> >
> >
> > ------------[ cut here ]------------
> > [ 13.530971] sdhci-omap 4809c000.mmc: Got CD GPIO
> > [ 13.535647] WARNING: CPU: 0 PID: 137 at drivers/opp/core.c:678
> > dev_pm_opp_set_rate+0x4cc/0x5d4
>
> Looks like the stuff from drivers/opp/ti-opp-supply.c supply didn't
> work as expected.
>
> One of the major changes came with these patches:
>
> dc279ac6e5b4 cpufreq: dt: Refactor initialization to handle probe deferral properly
> dd461cd9183f opp: Allow dev_pm_opp_get_opp_table() to return -EPROBE_DEFER
>
> And that's where I think it may have gone wrong.
>
> Dave: Will you (or someone else from TI) can have a look at it as well
> ?

http://lore.kernel.org/lkml/be911bcddc1dbf4a152513cb3d83f8eed7d2574c.1603189831.git.viresh.kumar@xxxxxxxxxx

I think this will fix it now.

--
viresh