Comment 2 for bug 758430

I don't think it is a duplicated one with bug #500069.

From the log, some failure happened during writing sector to usb HDD. and caused " flush" task hang, then
lowered speed, but seems no such kind of errors in bug #500069.

In fact, long ago, there were a patch[1](just a quirk) to make the device[152d:2329] work well, so
it is a regression?

Considered it is easily reproduced for you, could you provide some usbmon data to
help fix the problem?

About how to trace usbmon, see Documentation/usb/usbmon.txt.

[1]
commit 3030ca4cf4abbdd2dd850a14d20e9fca5937ffb5
Author: Phil Dibowitz <email address hidden>
Date: Sun Oct 19 08:17:54 2008 +0200

    USB: storage: Avoid I/O errors when issuing SCSI ioctls to JMicron USB/ATA bridge

    Here's the patch that implements the fix you suggested to avoid the
    I/O errors that I was running into with my new USB enclosure with a
    JMicron USB/ATA bridge, while issuing scsi-io USN or other such
    queries used by Fedora's mkinitrd.
    http://bugzilla.kernel.org/show_bug.cgi?id=9638#c85