From: Angus Sawyer The mwave driver requires [un]register_char from 8250.c Make sure 8250.c gets compilied. 25-akpm/drivers/char/Kconfig | 1 + 1 files changed, 1 insertion(+) diff -puN drivers/char/Kconfig~mwave-needs-8250 drivers/char/Kconfig --- 25/drivers/char/Kconfig~mwave-needs-8250 Wed Sep 10 12:03:55 2003 +++ 25-akpm/drivers/char/Kconfig Wed Sep 10 12:03:55 2003 @@ -959,6 +959,7 @@ source "drivers/char/pcmcia/Kconfig" config MWAVE tristate "ACP Modem (Mwave) support" depends on X86 + select SERIAL_8250 ---help--- The ACP modem (Mwave) for Linux is a WinModem. It is composed of a kernel driver and a user level application. Together these components _