2007-09-28 19:43:27

by Chris Frey

Subject: Temporarily disabling CONFIG_USB_SUSPEND

Hi,

Is there a global means to disable the CONFIG_USB_SUSPEND feature, perhaps
through /proc or /sysfs?

I know this can be done, in a semi-reliable manner, on a per-device
basis by writing 0 or 2 to the /sys/.../device/power/state file, but
I'm looking for something that will have the same effect as disabling
CONFIG_USB_SUSPEND, but without recompiling the kernel.

Thanks,
- Chris

2007-09-28 19:48:52

by Chuck Ebbert

Subject: Re: Temporarily disabling CONFIG_USB_SUSPEND

On 09/28/2007 03:42 PM, Chris Frey wrote:
> Hi,
>
> Is there a global means to disable the CONFIG_USB_SUSPEND feature, perhaps
> through /proc or /sysfs?
>
> I know this can be done, in a semi-reliable manner, on a per-device
> basis by writing 0 or 2 to the /sys/.../device/power/state file, but
> I'm looking for something that will have the same effect as disabling
> CONFIG_USB_SUSPEND, but without recompiling the kernel.
>

Kernel boot option usbcore.autosuspend=-1 if usbcore is built-in.

# modprobe usbcore autosuspend=-1

(0 now means suspend immediately)