Re: [alsa-devel] [PATCH] ASoC: rt5677: Avoid recursive locking in the DEADLOCK detector

On Wed, Jun 03, 2015 at 11:53:17PM +0800, Oder Chiou wrote:

The patch is for to avoid recursive locking in the DEADLOCK detector. In the driver, it encountered the warnning message of the recursive locking in the function "regmap_lock_mutex".

Could you be more specific about the deadlock you're seeing? This isn't really enough to understand either what the problem is or why this fixes it. Converting all the per-regmap mutexes into a single global mutex isn't an immediately obvious step.