On Mon, 14 Dec 2009, Oliver Neukum wrote: > > Also note that other drivers will reset a device to recover from errors > > (usbhid for example). > > I haven't heard of a switched device with an HID interface. Eventually one will come along. > > Do we really have to do this? How often will it be a problem? > > We do have a problem here. > > > usb-storage's class-specific reset mechanism almost never works, > > But > a) a generic reset will never work > b) the other interfaces may still work > > > probably because Windows doesn't use it. So what does Windows do when > > such a device gets an error in its mass-storage interface? > > I don't know. I suspect Windows switches modes in kernel space. Well, if we don't have any choice then it has to be done. Obviously a sysfs attribute is the best way. However I can't help thinking that this is only a symptom of something deeper, and it ought to be generalized. But it's not clear how... 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
