How to selective suspend usb on linux

[viswanadh <vpalepu@xxxxxxxxxxxxxxx>]

Hi
I tried usb selective suspend on kernels 2.6.32 and 2.6.35 using the
/sys/bus/usb/devices/x-x/power/level and autosuspend.

But on 2.6.35 its not working, even I changed the level to control and
autosuspend to autosuspend_us_delay. 
Is there any other way to selective suspend usb 2.0?


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