[PATCH] ASoC: amd: acp: Use IS_REACHABLE() for SND_SOC_ACPI_AMD_SDCA_QUIRKS guard

From: Syed Saba Kareem <[email protected]>

Fix a build failure when CONFIG_SND_SOC_ACPI_AMD_MATCH=y (built-in) and
CONFIG_SND_SOC_ACPI_AMD_SDCA_QUIRKS=m (module):

  x86_64-linux-ld: sound/soc/amd/acp/amd-acp70-acpi-match.o:(.data+0xf00):
    undefined reference to `snd_soc_acpi_amd_sdca_is_device_rt712_vb'

The header guard uses IS_ENABLED() which evaluates to true for both =y
and =m configs. This causes the real function declaration to be used even
when the symbol is only available in a loadable module, resulting in an
undefined reference when the caller is built-in.

Replace IS_ENABLED() with IS_REACHABLE() which correctly evaluates to
false when the dependency is a module but the caller is built-in, causing
the static inline stub to be used instead.

Fixes: 10d366a846be ("ASoC: amd: acp: Fix Kconfig dependencies for SND_SOC_ACPI_AMD_SDCA_QUIRKS")
Signed-off-by: Syed Saba Kareem <[email protected]>
---
 sound/soc/amd/acp/soc-acpi-amd-sdca-quirks.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sound/soc/amd/acp/soc-acpi-amd-sdca-quirks.h b/sound/soc/amd/acp/soc-acpi-amd-sdca-quirks.h
index 0e644e71e76f..66df37d29d84 100644
--- a/sound/soc/amd/acp/soc-acpi-amd-sdca-quirks.h
+++ b/sound/soc/amd/acp/soc-acpi-amd-sdca-quirks.h
@@ -9,7 +9,7 @@
 #ifndef _SND_SOC_ACPI_AMD_SDCA_QUIRKS
 #define _SND_SOC_ACPI_AMD_SDCA_QUIRKS
 
-#if IS_ENABLED(CONFIG_SND_SOC_ACPI_AMD_SDCA_QUIRKS)
+#if IS_REACHABLE(CONFIG_SND_SOC_ACPI_AMD_SDCA_QUIRKS)
 
 bool snd_soc_acpi_amd_sdca_is_device_rt712_vb(void *arg);
 
-- 
2.43.0