On Wed, Aug 26, 2020 at 12:09:28PM +0200, Takashi Iwai wrote: > Mark Brown wrote: > > checkpatch is broken. > Heh, I'm not objecting it :) > OTOH, it's also true that ENOTSUPP is no good error code if returned > to user-space. Unfortunately many codes (including what I wrote) use > this code mistakenly, and they can't be changed any longer... It's also used internally in various places without being returned to userspace, that's what's going on here - the regmap core has some specific checks for -ENOTSUPP.
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