linux-kernel - Re: [PATCH 08/16] ASoC: cs42l42: Reset and power-down on driver remove()

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Message-ID: <YWmYfYRNqyruBltq@sirena.org.uk>
Date:   Fri, 15 Oct 2021 16:04:29 +0100
From:   Mark Brown <broonie@...nel.org>
To:     Richard Fitzgerald <rf@...nsource.cirrus.com>
Cc:     alsa-devel@...a-project.org, linux-kernel@...r.kernel.org,
        patches@...nsource.cirrus.com
Subject: Re: [PATCH 08/16] ASoC: cs42l42: Reset and power-down on driver
 remove()

On Fri, Oct 15, 2021 at 02:36:11PM +0100, Richard Fitzgerald wrote:
> Driver remove() should assert RESET and disable the supplies.
> Previously this assumed that calling pm_runtime_suspend() would result
> in a call to cs42l42_runtime_suspend() to power-down. This isn't
> guaranteed - pm_runtime can be disabled.

>  	pm_runtime_suspend(&i2c_client->dev);
>  	pm_runtime_disable(&i2c_client->dev);
>  
> +	gpiod_set_value_cansleep(cs42l42->reset_gpio, 0);
> +	regulator_bulk_disable(ARRAY_SIZE(cs42l42->supplies), cs42l42->supplies);

Won't this end up with an extra disable of the regulators if they're
already disabled?

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