[Bug 212955] Possible kernel regression USB2 (not USB3) port EDIROL UA-101 (in USB 1.1 mode, not USB2) error -110

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https://bugzilla.kernel.org/show_bug.cgi?id=212955

--- Comment #23 from Lucas Endres (jaffa225man@xxxxxxxxx) ---
(In reply to Alan Stern from comment #22)
> Using two different drivers would definitely explain the different patterns
> of communication with the device in your two usbmon traces.
> 
> But it doesn't explain why, with one of the drivers, the device seems to
> stop responding when used with EHCI (and works okay with xHCI!).  Maybe this
> is caused by a bug in the device's firmware.  It that's true, changing the
> communication pattern might work around the problem.

Sorry, but here's another pertinent factor that I should have mentioned earlier
if I haven't:
It could very well be a bug in the UA-101's firmware, since if I connect an
audible input and watch it on the UA-101's builtin levels meter (with it
already on), I think it does freeze.  The levels remain when the input is
unplugged, after plugging in USB while running a nonworking commit.

Thanks for the insight!

I suppose I should start comparing the code to each module, since I think
that's what you're suggesting.

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