Re: [PATCH] regulator: Fix lockdep warning resolving supplies

[Mark Brown]

On Fri, 22 Jan 2021 13:20:42 +0000, Mark Brown wrote:
> With commit eaa7995c529b54 (regulator: core: avoid
> regulator_resolve_supply() race condition) we started holding the rdev
> lock while resolving supplies, an operation that requires holding the
> regulator_list_mutex. This results in lockdep warnings since in other
> places we take the list mutex then the mutex on an individual rdev.
> 
> Since the goal is to make sure that we don't call set_supply() twice
> rather than a concern about the cost of resolution pull the rdev lock
> and check for duplicate resolution down to immediately before we do the
> set_supply() and drop it again once the allocation is done.

Applied to

   https://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator.git for-next

Thanks!

[1/1] regulator: Fix lockdep warning resolving supplies
      commit: 14a71d509ac809dcf56d7e3ca376b15d17bd0ddd

All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent to Linus during
the next merge window (or sooner if it is a bug fix), however if
problems are discovered then the patch may be dropped or reverted.

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Thanks,
Mark