[Bug 212045] dwc2 gadget mode read call blocks

[bugzilla-daemon@bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=212045

--- Comment #7 from Tomasz Grobelny (tomasz@grobelny.net) ---
What do you mean by "function driver"? The userspace code that actually opens
the ep0/ep1/ep2 files exposed by functionfs? It works correctly for other
hosts.

I don't have any more data to argue it is dwc2, but still seems like an issue
in kernel USB subsystem.

Another question that might help debugging it: is it the host that should open
the ep2 endpoint? In other words: is it the host that is directly responsible
for lack of any mention of ep2 in dmesg output after the device was
reinitialized?

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