RE: How to selective suspend usb on linux

[Chen Peter-B29397 <B29397@xxxxxxxxxxxxx>]

> 
> 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?
> 
I remembered the autosuspend should be OK at 2.6.35, you only need to do below
command to auto suspend your device.
echo auto > /sys/bus/usb/devices/x-x/power/control

Please make sure CONFIG_PM_RUNTIME and CONFIG_USB_SUSPEND are chosen.

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