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

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Date:   Sun, 16 Jan 2022 23:15:28 -0500
From:   Julian Braha <julianbraha@...il.com>
To:     broonie@...nel.org, lgirdwood@...il.com, perex@...ex.cz,
        tiwai@...e.com, Vijendar.Mukunda@....com, AjitKumar.Pandey@....com,
        pierre-louis.bossart@...ux.intel.com, kai.vehmanen@...ux.intel.com,
        tanureal@...nsource.cirrus.com
Cc:     linux-kernel@...r.kernel.org, alsa-devel@...a-project.org,
        fazilyildiran@...il.com
Subject: [PATCH] ASoC: amd: fix unmet dependency on GPIOLIB for SND_SOC_DMIC

When SND_SOC_AMD_YC_MACH 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_AMD_YC_MACH [=y] && SOUND [=y] && !UML && SND [=y] && SND_SOC [=y] && SND_SOC_AMD_ACP6x [=y]

This is because SND_SOC_AMD_YC_MACH selects SND_SOC_DMIC,
without selecting or depending on GPIOLIB, despite
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/amd/Kconfig | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sound/soc/amd/Kconfig b/sound/soc/amd/Kconfig
index 7a9e45094f37..4aa067c5f054 100644
--- a/sound/soc/amd/Kconfig
+++ b/sound/soc/amd/Kconfig
@@ -88,7 +88,7 @@ config SND_SOC_AMD_ACP6x
 config SND_SOC_AMD_YC_MACH
 	tristate "AMD YC support for DMIC"
 	select SND_SOC_DMIC
-	depends on SND_SOC_AMD_ACP6x
+	depends on SND_SOC_AMD_ACP6x && GPIOLIB
 	help
 	  This option enables machine driver for Yellow Carp platform
 	  using dmic. ACP IP has PDM Decoder block with DMA controller.
-- 
2.32.0