[Bug 211667] New: USB attached HDD enclosure failure

[Bug 211667] New: USB attached HDD enclosure failure

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=211667

            Bug ID: 211667
           Summary: USB attached HDD enclosure failure
           Product: Drivers
           Version: 2.5
    Kernel Version: 5.10.14
          Hardware: x86-64
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: USB
          Assignee: drivers_usb@kernel-bugs.kernel.org
          Reporter: sec@dschroeder.info
        Regression: No

Created attachment 295177
  --> https://bugzilla.kernel.org/attachment.cgi?id=295177&action=edit
dmesg

Only three out of four drives are recognized at the time the enclosure is
powered on.
As a workaround the following device is resetted:

path=/dev/bus/usb/004/008
    description=VIA Labs, Inc. USB3.1 Hub
    manufacturer=VIA Labs, Inc.
    device=USB3.1 Hub
    search string=VIA Labs, Inc. USB3.1 Hub VIA Labs, Inc. USB3.1 Hub

which is a HUB integrated into the external enclosure.

External enclosure model: IB-3740-C31

Attached dmesg shows the initial power up and the following manual reset.

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[Bug 211667] USB attached HDD enclosure failure

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=211667

--- Comment #1 from Alan Stern (stern@rowland.harvard.edu) ---
For more information, collect a usbmon trace for bus 4 showing what happens
when the enclosure is plugged in and powered up.  This could be a bug in the
integrated hub.

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