Sebastian Reichel
22a94021e7
regulator: rk808: revert to synchronous probing
...
The rk808 driver registers a bunch of regulator devices in a loop.
If one of the later regulators fails to register (usually because
its input supply is not yet available) everything will be unrolled
(i.e. previously registered regulators will be unregistered). With
asynchronous registration there might already be consumers, though.
We do not have the necessary infrastructure to properly unregister
the consumer device, so this scenario should be avoided.
First checking all input supplies or disallowing usage of the regulators
until all are registered does not work, since there can be
self-references (e.g. DCDC channels providing the supply of LDOs).
The only sensible solution I found is registering the regulator devices
asynchronously, so that we do not have to unroll. Since this is a major
rework let's revert back to synchronous probing for now to fix the issue
at hand.
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Link: https://lore.kernel.org/r/20230504173618.142075-14-sebastian.reichel@collabora.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2023-05-23 19:01:58 +01:00
..
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