linux-kernel - Re: [next] db845c: WARNING: CPU: 5 PID: 8 at drivers/clk/clk-divider.c:139 divider_recalc

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Date:   Thu, 7 Apr 2022 17:12:09 +0530
From:   Naresh Kamboju <naresh.kamboju@...aro.org>
To:     Maxime Ripard <maxime@...no.tech>
Cc:     linux-clk <linux-clk@...r.kernel.org>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>,
        linux-stm32@...md-mailman.stormreply.com,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        open list <linux-kernel@...r.kernel.org>,
        lkft-triage@...ts.linaro.org, regressions@...ts.linux.dev,
        gabriel.fernandez@...s.st.com,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        Alexandre Torgue <alexandre.torgue@...s.st.com>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        Nicolas Dechesne <nicolas.dechesne@...aro.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Subject: Re: [next] db845c: WARNING: CPU: 5 PID: 8 at drivers/clk/clk-divider.c:139
 divider_recalc_rate

On Thu, 7 Apr 2022 at 13:24, Maxime Ripard <maxime@...no.tech> wrote:
>
> Hi,
>
> > > I'm not sure if it's feasible, but if it is, it looks like something
> > > that could be fixed by the patch pasted here:
> > >
> > > https://lore.kernel.org/linux-clk/20220401122736.5yvanksa4pla7uql@houat/
> > > Could you test it?
> >
> > I have tested the single line patch and reported problems not fixed.
>
> Could you test this branch?
> https://github.com/mripard/linux/tree/rpi/clk-improvements-more-fixes

I have tested your tree and branch.
I saw more clk prints in the boot log and did not notice the reported warning.

[    0.734195] clk_set_rate_range_nolock: qdss: orphan ? n
[    0.734222] clk_set_rate_range_nolock: qdss: core req rate 0
[    0.734235] clk_set_rate_range_nolock: qdss: clamped rate 0
[    0.734249] clk_core_set_rate_nolock: qdss: rate 0
[    0.734262] clk_core_set_rate_nolock: qdss: rounded rate 0
...
[    3.574169] clk_set_rate_range_nolock: gcc_ufs_phy_ice_core_clk: orphan ? n
[    3.581271] clk_set_rate_range_nolock: gcc_ufs_phy_ice_core_clk:
core req rate 300000000
[    3.589446] clk_set_rate_range_nolock: gcc_ufs_phy_ice_core_clk:
clamped rate 300000000
[    3.597521] clk_core_set_rate_nolock: gcc_ufs_phy_ice_core_clk:
rate 300000000
...

Please refer this link for detail boot log,
https://lkft.validation.linaro.org/scheduler/job/4861930#L2712

Build link
https://builds.tuxbuild.com/27SxYLYlZcKEUQGVbmnmLP3GxEp/

- Naresh

>
> Thanks!
> Maxime


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Linaro LKFT
https://lkft.linaro.org