> Mister Greg, how to change configuration _inside_ the driver? Device > was made to be > working on second usb config after one reconnect/device change, i've > lost whole day > trying to make something with that. After all, usb_set_configuration() > isn't even > EXPORT()ED at all !
It isn't exported because, generally speaking, drivers can't use it. If your driver called usb_set_configuration() from within its probe routine, it would hang. That's because usb_set_configuration would unregister the interface being probed by your driver, so it would try to call your driver's disconnect routine, but first it would have to wait for the probe to finish -- deadlock. There is an exported routine drivers can use in the rare cases where they do need to change configurations. It's called usb_driver_set_configuration(), and it is present in 2.6.19. 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-devel@lists.sourceforge.net To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
