[Bugme-new] [Bug 13624] New: usb: wrong autosuspend initialization

[bugzilla-daemon at bugzilla.kernel.org]

http://bugzilla.kernel.org/show_bug.cgi?id=13624

           Summary: usb: wrong autosuspend initialization
           Product: Power Management
           Version: 2.5
    Kernel Version: 2.6.30
          Platform: All
        OS/Version: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: Other
        AssignedTo: power-management_other at kernel-bugs.osdl.org
        ReportedBy: list at phuk.ath.cx
        Regression: Yes


My optical usb mouse (Logitech MX500, 046d:c025) turns its LED off after 2
seconds of idling. That means I have to press a button to wake it up again.

This happens only if it's connected at bootup:
# cat /sys/bus/usb/devices/2-1/power/level
auto

then after I replug it:
# cat /sys/bus/usb/devices/2-1/power/level
on

which then results in the desired behaviour (LED stays on). This is new since
2.6.30. I'm using the gentoo patchset, but I'll assume they didn't tamper with
usb autosuspend there.

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