[Bug 221184] New: mouse/keyboard (connected via hub) usb reset under system load with weak cpu

[bugzilla-daemon@kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=221184

            Bug ID: 221184
           Summary: mouse/keyboard (connected via hub) usb reset under
                    system load with weak cpu
           Product: Drivers
           Version: 2.5
          Hardware: All
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P3
         Component: USB
          Assignee: drivers_usb@kernel-bugs.kernel.org
          Reporter: roxmail@list.ru
        Regression: No

Created attachment 309564
  --> https://bugzilla.kernel.org/attachment.cgi?id=309564&action=edit
dmesg

There are occasionally mouse/keyboard (connected via usb hub) resets, seems it
is coursed by high system`s cpu load. I found a "quick" reproducer - it is
firefox and moving photo test
(https://testufo.com/photo#photo=quebec.jpg&pps=960&pursuit=0&height=0)

Partly it is regression - mouse resets intoduced by commit:
[64cc3f12d1c7dd054a215bc1ff9cc2abcfe35832] USB: EHCI: Do not return -EPIPE when
hub is disconnected.

with attached patch there are no usb resets and mouse/keyboards are quite
usable it this conditions (while firefox test), only backside effect what i see
- it`s some errors in dmesg at devices removing.

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