On Thursday 02 April 2009, Russ Dill wrote: > so why not use USB_CDC_PROTO_NONE? It still works with the usbser.sys > windows driver. udev rules could later be written to not consider USB > ACM devices that have PROTO_NONE as modems. I don't entirely recall why it uses USB_CDC_ACM_PROTO_AT_V25TER; ISTR that's how the original serial gadget code worked (which I didn't write). It was probably because of some client code -- maybe cdc-acm.c even -- which required it. (Which version of usbser.sys was OK with it? XP/SP2 and newer?) Never made much sense to me. I'd call the cdc-acm fix obvious, and suggest it get into the -stable kernels. Unfortunately changing the serial gadget code would obviously break interop with current Linux hosts ... so what I'd do is provide some kind of feature-removal listing for that, maybe a couple years from now, so the cdc-acm host side driver fix would be relatively widely deployed before that gets changed. -- 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
