linux-kernel - Re: [PATCH v1 2/2] ALSA: hda: cs35l41: Only add SPI CS GPIO if SPI is enabled in kernel

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Date: Thu, 21 Dec 2023 09:27:16 +0100
From: Takashi Iwai <tiwai@...e.de>
To: Stefan Binding <sbinding@...nsource.cirrus.com>
Cc: Takashi Iwai <tiwai@...e.de>,
	Jaroslav Kysela <perex@...ex.cz>,
	Takashi Iwai <tiwai@...e.com>,
	<alsa-devel@...a-project.org>,
	<linux-sound@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>,
	<patches@...nsource.cirrus.com>,
	kernel test robot <lkp@...el.com>
Subject: Re: [PATCH v1 2/2] ALSA: hda: cs35l41: Only add SPI CS GPIO if SPI is enabled in kernel

On Wed, 20 Dec 2023 09:10:37 +0100,
Takashi Iwai wrote:
> 
> On Tue, 19 Dec 2023 17:22:32 +0100,
> Stefan Binding wrote:
> > 
> > If CONFIG_SPI is not set in the kernel, there is no point in trying
> > to set the chip selects. We can selectively compile it.
> 
> I guess it should with IS_REACHABLE() instead of IS_ENABLED()?
> It can be still CONFIG_SPI=m while CONFIG_SND_HDA_*=y.

In anyway, I applied the patches as is for now, as it should work in most cases.
Let's see whether the use of IS_REACHABLE() is required.


thanks,

Takashi