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

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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




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