regcache: use the regmap scoped lock guard

Convert the open-coded map->lock()/map->unlock() users in regcache.c
to the regmap scoped guard introduced for regmap.c. Use
scoped_guard(regmap, ...) in regcache_exit(), where the locked region
is a subsection of the function, and guard(regmap)() for the
function-scope critical sections.

regcache_init() keeps explicit map->lock()/map->unlock() calls: it
has a goto err_* cleanup ladder and mixing goto with cleanup helpers
in the same function is not allowed by cleanup.h.

regcache_sync() and regcache_sync_region() are left as-is: they
already use a single goto out unlock path, so converting them would
require either mixing a goto with a scoped_guard scope or restructuring
their control flow, neither of which is an improvement.

No functional change.

Assisted-by: LLM
Signed-off-by: Peng Fan <peng.fan@nxp.com>
Link: https://patch.msgid.link/20260924-regmap-lock-guard-v3-2-8a6127223c16@nxp.com
Signed-off-by: Mark Brown <broonie@kernel.org>

0 files changed, 0 insertions, 0 deletions