On Tuesday 31 July 2012 16:54:13 Bjørn Mork wrote: > Alan Stern <stern@xxxxxxxxxxxxxxxxxxx> writes: > > On Tue, 31 Jul 2012, Bjørn Mork wrote: > > > >> IMHO that should have been the default for any composite device, but > >> whatever.. I don't think it's very nice of usb-storage to reset the > >> device if there are drivers bound to other functions. > > > > That's why we have pre_reset and post_reset callbacks. The alternative > > is to lose access to all the mounted filesystems on the mass-storage > > device, which isn't very nice either. > > Well, you are then saying that usb-storage has priority over any other > function and that is often wrong IMHO. There are many newer composite > devices where the usb-storage function is thrown in as a bonus most > users never will touch, where the main function can be modem or printer > or whatever. Letting the usb-storage driver reset these devices is bad. > > Ref for example http://comments.gmane.org/gmane.linux.usb.general/60055 User space can set the quirk. It wasn't intended for this, but it does the job. Furthermore on such devices, storage could be a bot more cooperative and try the class specific reset first. Regards Oliver -- 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
