From: Andrew Morton <akpm@linux-foundation.org>

i386 allmodconfig:

drivers/built-in.o: In function `kgdb8250_late_init':
drivers/serial/8250_kgdb.c:290: undefined reference to `serial8250_unregister_by_port'

this fix is pretty hacky and nasty.

Cc: Jason Wessel <jason.wessel@windriver.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 lib/Kconfig.kgdb |    1 +
 1 file changed, 1 insertion(+)

diff -puN drivers/serial/Kconfig~kgdb-kconfig-fix drivers/serial/Kconfig
diff -puN lib/Kconfig.kgdb~kgdb-kconfig-fix lib/Kconfig.kgdb
--- a/lib/Kconfig.kgdb~kgdb-kconfig-fix
+++ a/lib/Kconfig.kgdb
@@ -68,6 +68,7 @@ config KGDB_ONLY_MODULES
 config KGDB_8250_NOMODULE
 	bool "KGDB: On generic serial port (8250)"
 	select KGDB_8250
+	select SERIAL_8250
 	help
 	  Uses generic serial port (8250) to communicate with the host
 	  GDB.  This is independent of the normal (SERIAL_8250) driver
_