On Wed, 21 Feb 2007, sigint wrote: > Hello, > > I have a doubt regarding usb_reset_dev call. In its > man page, it says, > > ===== > Do a port reset, reassign the device's address, and > establish its former operating configuration. If the > reset fails, or the device's descriptors change from > their values before the reset, or the original > configuration and altsettings cannot be restored, a > flag will be set telling khubd to pretend the device > has been disconnected and then re-connected. All > drivers will be unbound, and the device will be > re-enumerated and probed all over again. > ===== > > Does it mean: > If port reset fails, the particular device will be > logically disconnected, drivers connected to that > device will be unbound
Up to here, yes, this will happen. > and the device's probe () > routine will be called *automatically* by khubd? This part is meaningless, since devices don't have probe() routines. Assuming the device is still connected to the USB bus, khubd will detect it and will enumerate it all over again. A default configuration will be selected and drivers for the interfaces in that configuration will be probed. All exactly the same as if the device had been unplugged and then plugged back in. Alan Stern ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ Linux-usb-users@lists.sourceforge.net To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-users
