linux-kernel - Re: [PATCH] ASoC: codecs: allow compile testing without MFD drivers

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Date:   Tue, 30 Aug 2022 11:35:47 +0100
From:   Mark Brown <broonie@...nel.org>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Cc:     Liam Girdwood <lgirdwood@...il.com>,
        Jaroslav Kysela <perex@...ex.cz>,
        Takashi Iwai <tiwai@...e.com>, alsa-devel@...a-project.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] ASoC: codecs: allow compile testing without MFD drivers

On Sat, Aug 27, 2022 at 12:02:39PM +0300, Krzysztof Kozlowski wrote:

> True, it's not the same build coverage need as subsystem/interface
> dependencies, but still:
> 1. Drivers can be built independently, so why not?
> 2. There is no drawback in allowing to building them independently
> (compile test).
> 3. The parent MFD device could also depend on something (RK817 and
> MFD_LOCHNAGAR depends on I2C and OF; CPCAP on SPI), so it's not always
> the case of just enabling parent. IOW, you can compile test codecs
> without I2C and SPI which is valuable itself.

> I find the last reason actually quite valid and applicable here. If you
> wish I can add it to the commit msg.

You've already found one case where there's a dependency being
pulled in by the parent, I suspect there's more.  There's a
tradeoff between getting coverage and having to deal with the
noise from randconfigs.

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