On Fri, Dec 24, 2021 at 11:13:48AM +0700, Quan Nguyen wrote:

This commit introduces regmap_acquire/release_lock() functions and makes
them available for drivers that need atomic access of regmap registers

You've not explained what something would need this for and how
it's expected to work - we don't provide unlocked access to the
regmap to client drivers so I don't see how one could safely use
this.  It's unclear to me what this would mean or why it's not
better implemented in the client driver.