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    Subjectpm_op(): usb_dev_suspend+0x0/0x10 returns -2 on USB device 8087:0020

    I wonder if this is the write place to post this issue to, but I have a
    proplem when trying go suspend or hibernate my system. after enabling
    pm_trace by:

    echo 1 > /sys/power/pm_trace

    and then issuing pm-suspend, I get the following in dmesg:

    [ 685.833275] PM: Entering mem sleep
    [ 685.833292] Suspending console(s) (use no_console_suspend to debug)
    [ 685.993399] pm_op(): usb_dev_suspend+0x0/0x10 returns -2
    [ 685.993404] PM: Device usb2 failed to suspend: error -2
    [ 685.993408] PM: Some devices failed to suspend
    [ 685.997009] PM: resume devices took 0.000 seconds
    [ 685.997169] PM: Finishing wakeup.

    this is on, but on 2.6.33-rc8 I get the same results.

    trying to find out what device this is:

    $ lsusb
    Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
    Bus 001 Device 003: ID 0bda:0159 Realtek Semiconductor Corp.
    Bus 001 Device 004: ID 04f2:b16c Chicony Electronics Co., Ltd
    Bus 001 Device 005: ID 03f0:231d Hewlett-Packard
    Bus 001 Device 002: ID 8087:0020
    Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

    my persumption is that "Device usb2" would be device 002 on bus 001
    above, that is, 8087:0020. googling for this USB id I found some
    references here: :

    Bus 001 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub

    I wonder what could be done to make this device not sabotage the suspend


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