linux-kernel - Re: [PATCH v1] regulator: core: Convert warning to debug print

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Message-ID: <aa596890-d98a-41c2-bc10-8c1db58ea23a@sirena.org.uk>
Date:   Thu, 12 Oct 2023 18:47:58 +0100
From:   Mark Brown <broonie@...nel.org>
To:     Ninad Palsule <ninad@...ux.ibm.com>
Cc:     joel@....id.au, eajames@...ux.ibm.com, lgirdwood@...il.com,
        linux-kernel@...r.kernel.org, lakshmiy@...ibm.com
Subject: Re: [PATCH v1] regulator: core: Convert warning to debug print

On Thu, Oct 12, 2023 at 12:42:35PM -0500, Ninad Palsule wrote:
> There are some boards without the vcc regulators for eeprom or other
> devices. In such cases, we should not see the following warning and
> this confuses the user. We want to see this only when it is compiled
> with CONFIG_REGULATOR_DEBUG option.

> [0.747347] at24 6-0055: supply vcc not found, using dummy regulator
> [0.752877] pca953x 6-0074: supply vcc not found, using dummy regulator

This is a warning saying that the firmware description for the system is
incomplete in case things go wrong later - it is vanishingly unlikely
that these devices actually do not require supplies, we'd probably have
heard about it if they did.  If a supply is not described properly we
may for example decide to power off what we think is an unused supply
with bad results.

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