[Bug 212725] USB CDC ACM device stop working

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https://bugzilla.kernel.org/show_bug.cgi?id=212725

--- Comment #4 from Stefan Agner (stefan@xxxxxxxx) ---
Thanks for the quick response!

Applied and built a 5.11.15 kernel with that patch. It indeed seems to fix the
issue!

It did not apply cleanly on 5.11.15 or master, there is a `spin_lock_irq` in
that area. I just moved the acm_unpoison_urbs after the suspend counter
decrement, not sure if that is the correct fix though.

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