linux-kernel - [PATCH] ASoC: davinci: vcif must be a module if SND_DAVINCI

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Date:	Mon, 29 Sep 2014 17:32:17 +0200
From:	Arnd Bergmann <arnd@...db.de>
To:	broonie@...nel.org
Cc:	Liam Girdwood <lgirdwood@...il.com>,
	Peter Ujfalusi <peter.ujfalusi@...com>,
	alsa-devel@...a-project.org, linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	davinci-linux-open-source@...ux.davincidsp.com
Subject: [PATCH] ASoC: davinci: vcif must be a module if SND_DAVINCI_SOC is

It is possible to configure a kernel with SND_DAVINCI_SOC=m and
SND_DM365_VOICE_CODEC=y, which results in a link error:

sound/built-in.o: In function `davinci_vcif_probe':
sound/soc/davinci/davinci-vcif.c:223: undefined reference to `davinci_soc_platform_register'

The best way to avoid this is to make SND_DM365_VOICE_CODEC
a tristate option that depends on SND_DAVINCI_SOC, so it
can only be a module or disabled when the base driver is
a loadable module

Signed-off-by: Arnd Bergmann <arnd@...db.de>

diff --git a/sound/soc/davinci/Kconfig b/sound/soc/davinci/Kconfig
index d69510c53239..8e948c63f3d9 100644
--- a/sound/soc/davinci/Kconfig
+++ b/sound/soc/davinci/Kconfig
@@ -63,7 +63,8 @@ config SND_DM365_AIC3X_CODEC
 	  Say Y if you want to add support for AIC3101 audio codec
 
 config SND_DM365_VOICE_CODEC
-	bool "Voice Codec - CQ93VC"
+	tristate "Voice Codec - CQ93VC"
+	depends on SND_DAVINCI_SOC
 	select MFD_DAVINCI_VOICECODEC
 	select SND_DAVINCI_SOC_VCIF
 	select SND_SOC_CQ0093VC

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