[ltp] 100% activity from fingerprint reader even with usbcore.autosuspend=1?

[Yves-Alexis Perez]

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Hi,

I've enabled usbcore.autosuspend=3D1 in my command line, and it seems to
be applied:

corsac@hidalgo: grep . /sys/bus/usb/devices/*/power/autosuspend
/sys/bus/usb/devices/1-2/power/autosuspend:1
/sys/bus/usb/devices/usb1/power/autosuspend:1
/sys/bus/usb/devices/usb2/power/autosuspend:1
/sys/bus/usb/devices/usb3/power/autosuspend:1
/sys/bus/usb/devices/usb4/power/autosuspend:1
/sys/bus/usb/devices/usb5/power/autosuspend:1
/sys/bus/usb/devices/usb6/power/autosuspend:1
/sys/bus/usb/devices/usb7/power/autosuspend:1

But it seems the fingerprint reader doesn't care:

Recent USB suspend statistics
Active  Device name
100,0%	USB device  1-2 : Biometric Coprocessor (STMicroelectronics)

(powertop -d)

For the moment I don't use the fingerprint reader so I can just remove
uhci_hcd (I don't use much bluetooth either) or disable it in the bios,
but it'd be convenient to have it behaves nicely.

I'm using a (quite recent) git build:
Linux hidalgo 2.6.28-rc2-00185-ge946217-dirty #1 SMP Wed Oct 29 07:30:34
CET 2008 x86_64 GNU/Linux


Any hope for this?

Cheers,
--=20
Yves-Alexis

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