[Bug 221340] uas driver hangs and causes usb reset

[bugzilla-daemon@kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=221340

Michał Pecio (michal.pecio@gmail.com) changed:

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                 CC|                            |michal.pecio@gmail.com

--- Comment #3 from Michał Pecio (michal.pecio@gmail.com) ---
There is also Unmap/Read sub-channel in this log.

By "hang", do you mean that no I/O happens for 30 seconds or some other time
before these messages show up?

BTW, if you run (as root)
echo 'func handle_tx_event +p' >/proc/dynamic_debug/control

do you see anything new appear in dmesg at this time?

That would point to some "action" at xHCI layer, though I suppose it's also
possible that nothing interesting happens and the device simply never responds
to some commands under some circumstances.

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