I broke this with a typo in my patch (I inserted a line one line above
where I wanted to). Follwing patch will fix the problem.

--
Khalid Aziz

--- linux-2.4.19-pre7/include/asm-i386/serial.h	Tue Apr 16 18:52:50 2002
+++ linux-2.4.19-pre7-fixed/include/asm-i386/serial.h	Tue Apr 16 18:55:06 2002
@@ -140,8 +140,8 @@
 #endif
 
 #define SERIAL_PORT_DFNS		\
-	HCDP_SERIAL_PORT_DEFNS		\
 	STD_SERIAL_PORT_DEFNS		\
+	HCDP_SERIAL_PORT_DEFNS		\
 	EXTRA_SERIAL_PORT_DEFNS		\
 	HUB6_SERIAL_PORT_DFNS		\
 	MCA_SERIAL_PORT_DFNS