On Thu, 16 Jun 2011, Amit Nagal wrote: > ok lastly , is it possible to poweroff a usb port from host software > for eg similar to the case > where a usb host can turn off port power if too much current is drwan > by the device ? It depends on the port hardware. The hardware normally used in desktop and laptop USB host controllers does not allow it. The hardware used in most external hubs does not allow it, although a few types of hub do. I don't know about the hardware in a typical SOC. Alan Stern -- 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
