Re: [RFC PATCH 1/2] regmap: add configurable lock class key for lockdep

[Mark Brown]

On Thu, Jun 25, 2015 at 06:21:43AM -0700, Arjan van de Ven wrote:

Please fix your mailer to word wrap within paragraphs.

> wouldn't it be better to use the mutex_lock_nested() and co to
> explicitly express your hierarchy?

That was one of my original suggestions - one of the problems with this
code is that it's very much been presented as "here's the solution", it
took a long time to even discover the problem they were trying to solve.
I don't know exactly what the issue is supposed to be here, AFAICT the
answers were about lock classes not about subclasses because apparently
it's essential that we use lock classes.

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