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SubjectRE: [PATCH] leds: lm3530: fix handling of already enabled regulators
> Let me put it this way: Assume only this driver is using the regulator.
> If the regulator is enabled on boot, which means the reference count
> is init to 1.

Could you explain what 'enabled on boot' means ?
1) The regulator_enable() is called in initial time
2) boot_on = 1 in regulator_init_data ?

If you mean 'boot_on = 1' in regulator_init_data, then no use_count increase.

> Then if we set brt_val to 0 in lm3530_brightness_set, which will then
> call
> regulator_disable().

It looks buggy code in lm3530_brightness_set().
Even the regulator_disable() is failed, drvdata->enable is set to false.
I think drvdata->enable is changed to false only when the regulator is off successfully.

Thanks & BR
Milo -
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