On Wed, 18 Dec 2013, Felipe Balbi wrote: > Alan, any suggestions on how to handle wakeup correctly ? I mean, it > should be enabled by default during runtime PM and disabled during > system sleep. During system sleep, it should be set according to the value of device_may_wakeup(). > But when it comes to default state of can_wakeup field, > what should we do ? Should the driver be fiddling with that ? Leave it > to the bus driver ? Any tips ? If the bus driver knows whether the hardware is capable of issuing a wakeup request, it should set can_wakeup appropriately. In most cases the device driver doesn't need to worry about it. There are a few exceptions, though. If the bus code doesn't know enough about the hardware, or if some hardware has a quirk that the driver knows about but the bus code doesn't, for example. 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
