On Mon, Dec 22, 2014 at 12:23:19PM -0200, Mauro Carvalho Chehab wrote: > What this patch does is to offer a way for drivers B and C to define > different mutex groups (e. g. different mutex "IDs") that will teach > the lockdep code to threat regmap mutex on drivers B and C as different > mutexes.
> I hope the above explanation helps. No, not really - even the best explanation on the mailing list isn't going to make the commit clearer (something like this needs to be at least clear in the commit log and ideally the code) and it'd be much better if the interface were improved so it's obvious that users are doing the right thing when they use it.
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