On Wed, 7 Oct 2009, Oliver Neukum wrote: > Am Mittwoch, 7. Oktober 2009 18:03:08 schrieb Alan Stern: > > On Wed, 7 Oct 2009, Oliver Neukum wrote: > > > We will need some generic way to autoresume from open. > > > Resume will need to lock against open() and need to be called > > > from within open(). Any ideas for an unugly interface? > > > > It's not quite that bad. Resume doesn't need to lock against open. > > If open is called while resume is running then when it tries to do its > > own resume, it will either block (waiting for the pm_mutex) or return > > immediately (if it sees the device is already resumed). > > But resume() needs to know whether the read URBs need to be > submitted or not. Given that there are several pathways for turning on or turning off the read URBs, the best answer is to use a flag. 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
