This patch fixes the following build error:
Building modules, stage 2.
MODPOST 1834 modules
ERROR: "snd_card_create" [drivers/platform/x86/thinkpad_acpi.ko] undefined!
ERROR: "snd_ctl_notify" [drivers/platform/x86/thinkpad_acpi.ko] undefined!
ERROR: "snd_ctl_boolean_mono_info" [drivers/platform/x86/thinkpad_acpi.ko]
undefined!
ERROR: "snd_ctl_new1" [drivers/platform/x86/thinkpad_acpi.ko] undefined!
ERROR: "snd_card_free" [drivers/platform/x86/thinkpad_acpi.ko] undefined!
ERROR: "snd_card_register" [drivers/platform/x86/thinkpad_acpi.ko] undefined!
ERROR: "snd_ctl_add" [drivers/platform/x86/thinkpad_acpi.ko] undefined!
Cc: Len Brown <len.br...@intel.com>
Cc: Corentin Chary <corenti...@iksaif.net>
Cc: Henrique de Moraes Holschuh <h...@hmh.eng.br>
Cc: Alan Jenkins <alan-jenk...@tuffmail.co.uk>
Reported-by: Helight.Xu <helight...@gmail.com>
Signed-off-by: WANG Cong <amw...@redhat.com>
Tested-by: Helight.Xu <helight...@gmail.com>
---
diff --git a/drivers/platform/x86/Kconfig b/drivers/platform/x86/Kconfig
index fc5bf9d..596966c 100644
--- a/drivers/platform/x86/Kconfig
+++ b/drivers/platform/x86/Kconfig
@@ -215,6 +215,7 @@ config THINKPAD_ACPI
depends on ACPI
depends on INPUT
depends on RFKILL || RFKILL = n
+ depends on SOUND
select BACKLIGHT_LCD_SUPPORT
select BACKLIGHT_CLASS_DEVICE
select HWMON
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