On Fri, 4 Jan 2013, Lan Tianyu wrote: > Some usb devices can't be resumed correctly after power off. This > patch is to add usb_device_allow_power_off() for device's driver to allow or > prohibit device to be power off the device. Call pm_runtime_get_sync(portdev) > to increase port's usage count and then port will not be suspended. The > device will not be power off. There should be two separate APIs: usb_device_allow_power_off() and usb_device_prevent_power_off(). If you want, they can be implemented as inline routines that call a single handler. 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
