On Mon, Mar 29, 2021 at 2:43 PM Matti Vaittinen <matti.vaittinen@xxxxxxxxxxxxxxxxx> wrote: > > The checkpacth instructs to switch from ENOSUPP to EOPNOTSUPP. > > WARNING: ENOTSUPP is not a SUSV4 error code, prefer EOPNOTSUPP > > Make the gpiolib allow drivers to return both so driver developers > can avoid one of the checkpatch complaints. Internally we are fine to use the ENOTSUPP. Checkpatch false positives there. I doubt we need this change. Rather checkpatch should rephrase this to point out that this is only applicable to _user-visible_ error path. Cc'ed Joe. -- With Best Regards, Andy Shevchenko