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

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(switched to email.  Please respond via emailed reply-to-all, not via the
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On Thu, 25 Jun 2009 18:18:45 GMT
bugzilla-daemon@xxxxxxxxxxxxxxxxxxx wrote:

> 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@xxxxxxxxxxxxxxxxxxxx
>         ReportedBy: list@xxxxxxxxxxx
>         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.
> 

Seems to be a 2.6.29->2.6.30 regression.
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