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Dave Stevenson authored
commit 00440bcd

 upstream.

The driver was using the regmap lock to serialise the
individual accesses, but we really need to protect the
timings of enabling the regulators, including any communication
with the Atmel.

Use a mutex within the driver to control overall accesses to
the Atmel, instead of the regmap lock.

Signed-off-by: default avatarDave Stevenson <dave.stevenson@raspberrypi.com>
Signed-off-by: default avatarDetlev Casanova <detlev.casanova@collabora.com>
Link: https://lore.kernel.org/r/20220124220129.158891-4-detlev.casanova@collabora.com


Signed-off-by: default avatarMark Brown <broonie@kernel.org>
Signed-off-by: default avatarRahul T R <r-ravikumar@ti.com>
21487733
Linux kernel
============

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