Re: [PATCH v6] can, tty: can327 CAN/ldisc driver for ELM327 based OBD-II adapters

[Marc Kleine-Budde]

On 13.05.2022 11:38:31, Vincent Mailhol wrote:
> > +static void elm327_parse_line(struct can327 *elm, size_t len)
> > +{
> > +       lockdep_assert_held(&elm->lock);
> 
> You are using many of those lockdep_assert_held(&elm->lock);
> 
> I guess you put them for debug purpose and probaly some of those can
> be removed (if you see a genuine risk at some places, then OK to keep
> as a safety net, but a bit of clean up can be done here, I think).
> 
> This comment applies to all use of lockdep_assert_held().

These statements document that the code must be called with the lock
held. They optimize away if lockdep is not enabled. Better keep them in
place.

regards,
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 |

Attachment: signature.asc
Description: PGP signature