linux-kernel - Re: [PATCH AUTOSEL 6.16 09/85] regulator: core: repeat voltage setting request for stepped regulators

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Message-ID: <38852b6e-20b3-43fc-90d7-29d10fd90abe@sirena.org.uk>
Date: Mon, 4 Aug 2025 12:36:08 +0100
From: Mark Brown <broonie@...nel.org>
To: Sasha Levin <sashal@...nel.org>
Cc: patches@...ts.linux.dev, stable@...r.kernel.org,
	Romain Gantois <romain.gantois@...tlin.com>, lgirdwood@...il.com,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH AUTOSEL 6.16 09/85] regulator: core: repeat voltage
 setting request for stepped regulators

On Sun, Aug 03, 2025 at 08:22:18PM -0400, Sasha Levin wrote:
> From: Romain Gantois <romain.gantois@...tlin.com>
> 
> [ Upstream commit d511206dc7443120637efd9cfa3ab06a26da33dd ]
> 
> The regulator_set_voltage() function may exhibit unexpected behavior if the
> target regulator has a maximum voltage step constraint. With such a
> constraint, the regulator core may clamp the requested voltage to a lesser
> value, to ensure that the voltage delta stays under the specified limit.

This needs a followup fix which isn't in mainline yet.

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