On 6/22/20 3:38 PM, Marc Kleine-Budde wrote: > On 6/22/20 2:20 PM, Kurt Van Dijck wrote: >> This commit enables listen-only mode, which works internally like CANFD mode. > > Does the controller distinguish between CAN-2.0 listen only and CAN-FD listen > only mode? > > If listen only means CAN-FD...should we add a check to open() if CAN_CTRLMODE_FD > and CAN_CTRLMODE_LISTENONLY is both set (or unset). Thinking a bit: Do we need this? As the device is passive it will not do anything "bad" to the bus. Marc -- Pengutronix e.K. | Marc Kleine-Budde | Embedded Linux | https://www.pengutronix.de | Vertretung West/Dortmund | Phone: +49-231-2826-924 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |