On Thursday, January 12, 2012, Alan Stern wrote: > On Thu, 12 Jan 2012, Oliver Neukum wrote: > > > Am Donnerstag, 12. Januar 2012, 03:01:04 schrieb Alan Stern: > > > Besides, what's usb-storage going to do if a CD drive does send a > > > wakeup request? usb-storage doesn't initiate any SCSI commands on its > > > own. All that will happen is the autosuspend timer will expire and the > > > drive will be suspended again. > > > > The answer would clearly be to do nothing but for another reason. > > Storage is an interface driver and we can never rule out that > > another or indeed multiple interfaces caused a wakeup. > > > > That argues for solving this is at the device level. Should we > > make a file in sysfs poll()able for wakeup? > > Indeed, I think it would make a lot of sense for > /sys/.../power/runtime_status to be pollable. This would require > it to be present always, not just when CONFIG_PM_ADVANCED_DEBUG is on. > > Rafael, any objection? No, if we have a good use case (which seems to be the case). Rafael -- 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
