On Tue, May 15, 2012 at 08:18:00AM -0700, Greg KH wrote: > On Tue, May 15, 2012 at 10:31:38PM +0800, Lan Tianyu wrote: > > Since alan suggested we should start simpler version(power > > down port that have no devices attached) firstly. And we > > also should provide general power off mechanism. > > > > I have a proposal. > > first: add portx_power_control sys file. > > echo "auto" => portx_power_control > > check whether there is a device. if no, send the clear > > USB_PORT_FEAT_POWER request. (since general way > > to control port power is via set or clear PORT_POWER) > > > > echo "on" => portx_power_control > > send the set USB_PORT_FEAT_POWER request. > > No "off"? Yeah, we probably need an "off" for those libusb and ModemManager developers who want to try and simulate a disconnect of a misbehaving device. Sarah Sharp -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
