On Mon, 4 May 2009, Arjan van de Ven wrote: > > > for normal device probing we already have infrastructure though... > > > wait_for_device_probe, driver_probe_done and friends... > > > (the scsi scanning thread is being converted to the async > > > infrastructure btw) > > > > > > do we need to invent more ? > > > > I suppose the usb-storage scanning thread could also be converted to > > the async infrastructure, although I haven't heard of anybody working > > on it. > > > > But the USB hub driver's thread (khubd) cannot be converted. It is > > central to the discovery of USB-based block devices. How would you > > handle that? > > take a ref in the driver_probe_done() sense, and release it when you > know you're done probing.... > > at that point all existing infrastructure will just work. Isn't there still something missing? The wait_for_device_probe() routine would wait until all attached devices had been probed. But why should prepare_namespace() have to wait that long? Wouldn't it be better to wait only until the root device has been registered? 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
