On Mon, Jul 31, 2023 at 08:03:41PM +0300, Vitaliy Makkoveev wrote:
> This is the culprit:
> schedule_timeout_uninterruptible(long timeout)
> {
>         tsleep(curproc, PWAIT, "schtou", timeout);
>         return 0;
> }

Not really. The problem is lower in intel_dp_wait_source_oui().
Which either missed the wakeup and still hit the
schedule_timeout_uninterruptible() codepath or the wakeup() was issued
before the tsleep(). In anycase something is not quite correct in that
codepath. Will look into it.

:wq Claudio

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