Messages in this thread | | | Date | Tue, 5 Jul 2022 11:56:13 +0200 | From | Max Staudt <> | Subject | Re: [PATCH v9] can, tty: can327 CAN/ldisc driver for ELM327 based OBD-II adapters |
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On Tue, 5 Jul 2022 11:49:27 +0200 Marc Kleine-Budde <mkl@pengutronix.de> wrote:
> On 05.07.2022 11:43:52, Geert Uytterhoeven wrote: > > So development started before commit cd6484e1830be260 ("serdev: > > Introduce new bus for serial attached devices"). I guess that is > > the reason why this driver uses a line discipline, instead of the > > serial bus? > > > > I had a quick glance through the various revisions posted, and it > > doesn't seem like anyone mentioned the serial bus. Would there be > > any advantage in migrating to the serial bus? > > Does serial bus work with hot plug devices like USB Serial Adapters > and/or devices that are not described in the device tree?
This is indeed the reason. The device cannot be autodetected, as the UART has no identifying information (USB VID/PID or the like, and don't forget the BT variants) attached to it, hence the manual attachment.
Max
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