--- zzzz-none-000/linux-4.9.231/drivers/isdn/Kconfig	2020-07-22 07:10:54.000000000 +0000
+++ falcon-5590-729/linux-4.9.231/drivers/isdn/Kconfig	2022-03-30 12:03:34.000000000 +0000
@@ -58,6 +58,10 @@
 
 if ISDN_CAPI
 
+source "drivers/isdn/capi_oslib/Kconfig"
+source "drivers/isdn/capi_codec/Kconfig"
+source "drivers/isdn/avm_dect/Kconfig"
+
 source "drivers/isdn/capi/Kconfig"
 
 source "drivers/isdn/hardware/Kconfig"