tree ca0af2bac0df1e72fb3d2ead9152aa7d5ee47223
parent ac8005171146a0367ba1f3a040af16116eab1619
author Jonas Karlman <jonas@kwiboo.se> 1692657024 +0000
committer Kever Yang <kever.yang@rock-chips.com> 1696668581 +0800

power: regulator: Only run autoset once for each regulator

With the commit 4fcba5d556b4 ("regulator: implement basic reference
counter"), keeping regulator enablement in balance become more important.
Calling regulator_autoset multiple times on a fixed regulator increase
the enable count for each call, resulting in an unbalanced enable count.

Introduce a AUTOSET_DONE flag and use it to mark that autoset has run
for the regulator. Return -EALREADY on any subsequent call to autoset.

This fixes so that the enable count is only ever increased by one per
regulator for autoset.

Fixes: 4fcba5d556b4 ("regulator: implement basic reference counter")
Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>