linux-kernel - Re: [PATCH 1/3] ASoC: cs4271: Fix cs4271 I2C and SPI drivers automatic module loading

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Message-ID: <5f2aeb66-97d6-41b7-8c80-87674c1b14d8@sirena.org.uk>
Date: Fri, 17 Oct 2025 16:01:21 +0100
From: Mark Brown <broonie@...nel.org>
To: Alexander Sverdlin <alexander.sverdlin@...il.com>
Cc: Herve Codina <herve.codina@...tlin.com>,
	David Rhodes <david.rhodes@...rus.com>,
	Richard Fitzgerald <rf@...nsource.cirrus.com>,
	Liam Girdwood <lgirdwood@...il.com>, Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Jaroslav Kysela <perex@...ex.cz>, Takashi Iwai <tiwai@...e.com>,
	Nikita Shubin <nikita.shubin@...uefel.me>,
	Axel Lin <axel.lin@...ics.com>,
	Brian Austin <brian.austin@...rus.com>, linux-sound@...r.kernel.org,
	patches@...nsource.cirrus.com, devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Thomas Petazzoni <thomas.petazzoni@...tlin.com>
Subject: Re: [PATCH 1/3] ASoC: cs4271: Fix cs4271 I2C and SPI drivers
 automatic module loading

On Fri, Oct 17, 2025 at 04:41:53PM +0200, Alexander Sverdlin wrote:

> indeed, that's what I've got for a fake I2C device:

> # cat /sys/bus/i2c/devices/0-0010/uevent 
> OF_NAME=cs4271
> OF_FULLNAME=/soc/i2c@...0000/cs4271@10
> OF_COMPATIBLE_0=cirrus,cs4271
> OF_COMPATIBLE_N=1
> MODALIAS=of:Ncs4271T(null)Ccirrus,cs4271

> to me it looks like a bug somewhere in I2C core...

IIRC this has been round the loop a few times and whatever you do
something breaks.

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