Re: [PATCH v2] pinctrl: avoid reload of p state in list iteration

[Aiqun(Maria) Yu]

On 11/15/2023 5:58 PM, Linus Walleij wrote:
> Hi Maria,
>
> On Wed, Nov 15, 2023 at 2:13 AM Maria Yu <quic_aiquny@xxxxxxxxxxx> wrote:
>
> > When in the list_for_each_entry iteration, reload of p->state->settings
> > with a local setting from old_state will makes the list iteration in a
> > infinite loop.
> > The typical issue happened, it will frequently have printk message like:
> >    "not freeing pin xx (xxx) as part of deactivating group xxx - it is
> > already used for some other setting".
> > This is a compiler-dependent problem, one instance was got using Clang
> > version 10.0 plus arm64 architecture.
> >
> > Signed-off-by: Maria Yu <quic_aiquny@xxxxxxxxxxx>
> > Cc: stable@xxxxxxxxxxxxxxx
>
> Thanks, very much to the point.
>
> Can you please send a v3 and add the info Andy requested too,
> and I will apply it!
>
> Yours,
> Linus Walleij
Thx Linus Walleij for your quick response.

here it is:
[https://lore.kernel.org/lkml/20231115102824.23727-1-quic_aiquny@xxxxxxxxxxx/]

--
Thx and BRs,
Aiqun(Maria) Yu