diff --git a/drivers/isdn/mISDN/Kconfig b/drivers/isdn/mISDN/Kconfig index 26cf0ac9c4ad0..c9a53c2224728 100644 --- a/drivers/isdn/mISDN/Kconfig +++ b/drivers/isdn/mISDN/Kconfig @@ -13,6 +13,7 @@ if MISDN != n config MISDN_DSP tristate "Digital Audio Processing of transparent data" depends on MISDN + select BITREVERSE help Enable support for digital audio processing capability.