On Thursday 19 July 2012 16:21:38 Lan Tianyu wrote: > On 2012年07月19日 14:37, Oliver Neukum wrote: > > Unloading the driver is a user space issue. > > But you are right there is a missing case > hi all: > I have a question About device which needs a firmware when connected. > If the port powered off when it was suspend, the port would power on > when system try to access the device. What happen if try to resume the device, > guess it will fail. usb core would disconnect the device and renumerate the device. Yes. That's how reset_resume() works. > The driver loaded again with firmware and the device still could work, is Right? No. All settings user space has done will be lost. > I have no a such device to do test. Just from guess. The point is whether > resuming the device without loading firmware will fail. It must. Interfaces can vanish and the device class can change. There's nothing to remain bound to. Regards Oliver -- 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
