Re: [RFC PATCH] usb/acpi: Add support usb port power off mechanism for device fixed on the motherboard

Alan Stern
2012-05-16T14:36:03Z

On Wed, 16 May 2012, Lan Tianyu wrote:

> Ok. Let me reconfirm the meaning of these opinions.
>
> "auto"
> if port without device, turn off power directly.
> if port with device, turn off power when the device is suspended.
>
> "on" the port's power must be on.
>
> "off" the port's power must be off.
>
> Right?

Maybe the "auto" setting should be renamed "active". Then "auto" can
be used for:

If the port has a device, turn the power on.
If the port doesn't have a device, turn the power off.

Alan Stern