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

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Date:   Sun, 10 Oct 2021 17:56:27 -0400
From:   Julian Braha <julianbraha@...il.com>
To:     linux-kernel@...r.kernel.org, alsa-devel@...a-project.org
Cc:     srinivas.kandagatla@...aro.org, bgoswami@...eaurora.org,
        lgirdwood@...il.com, broonie@...nel.org, perex@...ex.cz,
        tiwai@...e.com, ajitp@...eaurora.org
Subject: [PATCH] ASoC: fix unmet dependency on GPIOLIB

When SND_SOC_SC7180 or SND_SOC_STORM is selected,
and GPIOLIB is not selected, Kbuild gives the following
warning:

WARNING: unmet direct dependencies detected for SND_SOC_MAX98357A
  Depends on [n]: SOUND [=y] && !UML && SND [=y] && SND_SOC [=y] && GPIOLIB [=n]
  Selected by [y]:
  - SND_SOC_STORM [=y] && SOUND [=y] && !UML && SND [=y] && SND_SOC [=y] && SND_SOC_QCOM [=y]
  - SND_SOC_SC7180 [=y] && SOUND [=y] && !UML && SND [=y] && SND_SOC [=y] && SND_SOC_QCOM [=y] && I2C [=y]

This is because SND_SOC_MAX98357A is selected
by SND_SOC_STORM and SND_SOC_SC7180, but
these config options do not select or depend on
GPIOLIB, despite SND_SOC_MAX98357A depending on
GPIOLIB.

These unmet dependency bugs were 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/qcom/Kconfig | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/sound/soc/qcom/Kconfig b/sound/soc/qcom/Kconfig
index cc7c1de2f1d9..8c5c1ed54bc7 100644
--- a/sound/soc/qcom/Kconfig
+++ b/sound/soc/qcom/Kconfig
@@ -38,6 +38,7 @@ config SND_SOC_LPASS_SC7180
 
 config SND_SOC_STORM
 	tristate "ASoC I2S support for Storm boards"
+	depends on GPIOLIB
 	select SND_SOC_LPASS_IPQ806X
 	select SND_SOC_MAX98357A
 	help
@@ -141,7 +142,7 @@ config SND_SOC_SM8250
 
 config SND_SOC_SC7180
 	tristate "SoC Machine driver for SC7180 boards"
-	depends on I2C
+	depends on I2C && GPIOLIB
 	select SND_SOC_QCOM_COMMON
 	select SND_SOC_LPASS_SC7180
 	select SND_SOC_MAX98357A
-- 
2.25.1