linux-kernel - [PATCH] ASoC: mediatek: fix unmet dependency on GPIOLIB for SND_SOC

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Date:   Mon, 17 Jan 2022 00:03:24 -0500
From:   Julian Braha <julianbraha@...il.com>
To:     broonie@...nel.org, lgirdwood@...il.com, perex@...ex.cz,
        tiwai@...e.com, matthias.bgg@...il.com, trevor.wu@...iatek.com,
        tzungbi@...gle.com, geert+renesas@...der.be
Cc:     alsa-devel@...a-project.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org, fazilyildiran@...il.com
Subject: [PATCH] ASoC: mediatek: fix unmet dependency on GPIOLIB for SND_SOC_DMIC

When SND_SOC_MT8195_MT6359_RT1011_RT5682 is selected,
and GPIOLIB is not selected,
Kbuild gives the following warning:

WARNING: unmet direct dependencies detected for SND_SOC_DMIC
  Depends on [n]: SOUND [=y] && !UML && SND [=y] && SND_SOC [=y] && GPIOLIB [=n]
  Selected by [y]:
  - SND_SOC_MT8195_MT6359_RT1011_RT5682 [=y] && SOUND [=y] && !UML && SND [=y] && SND_SOC [=y] && I2C [=y] && SND_SOC_MT8195 [=y] && MTK_PMIC_WRAP [=y]

This is because SND_SOC_MT8195_MT6359_RT1011_RT5682
selects SND_SOC_DMIC without selecting or depending on
GPIOLIB, depsite SND_SOC_DMIC depending on GPIOLIB.

This unmet dependency bug was detected by Kismet,
a static analysis tool for Kconfig. Please advise
if this is not the appropriate solution.

Signed-off-by: Julian Braha <julianbraha@...il.com>
---
 sound/soc/mediatek/Kconfig | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sound/soc/mediatek/Kconfig b/sound/soc/mediatek/Kconfig
index 9306b7ca2644..0d154350f180 100644
--- a/sound/soc/mediatek/Kconfig
+++ b/sound/soc/mediatek/Kconfig
@@ -216,7 +216,7 @@ config SND_SOC_MT8195_MT6359_RT1019_RT5682
 
 config SND_SOC_MT8195_MT6359_RT1011_RT5682
 	tristate "ASoC Audio driver for MT8195 with MT6359 RT1011 RT5682 codec"
-	depends on I2C
+	depends on I2C && GPIOLIB
 	depends on SND_SOC_MT8195 && MTK_PMIC_WRAP
 	select SND_SOC_MT6359
 	select SND_SOC_RT1011
-- 
2.32.0