[Bug 213081] usb-storage / uas Genesys Logic Card Reader no longer working on 5.12

[bugzilla-daemon@bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=213081

--- Comment #19 from Alan Stern (stern@rowland.harvard.edu) ---
The usbmon trace shows that the original problem of not reporting the STALL has
been fixed.  But there is a new problem.  Here's where it shows up in the trace
for bus 6:

ffff88810248e0c0 67313744 S Bi:6:004:1 -115 13 <
ffff88810248e0c0 97843800 C Bi:6:004:1 -104 13 = 55534243 04000000 00000000 00

This was the second packet received from ep1in after the halt was cleared.  The
values in the received packet are correct (i.e., what I expect them to be), but
the timestamp and the -104 error code show that the URB timed out after 30
second and was unlinked.  This should not have happened; the URB should have
completed normally in less than one millisecond.

After this error, the device was reset and the same sequence of packets was
exchanged, with the same result as before (apparently -- the trace ends during
the second 30-second timeout window).

This indicates that the patch does not fully fix all the issues.  Evidently
xhci-hcd has trouble seeing when an URB for a formerly halted endpoint has
completed.

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