Hi Greg,

After merging the tty tree, today's linux-next build (x86_64 allmodconfig)
failed like this:

drivers/built-in.o: In function `dw8250_handle_irq':
8250_dw.c:(.text+0xcad9c): undefined reference to `serial8250_handle_irq'

CONFIG_SERIAL_8250 is 'm' and CONFIG_SERIAL_8250_DW is 'y' ...

Caused by commit 6b1a98d1c485 ("tty: serial8250: add helpers for the
DesignWare 8250").

I have used the ttye tree form next-20110823 for today.
-- 
Cheers,
Stephen Rothwell                    sfr@canb.auug.org.au
http://www.canb.auug.org.au/~sfr/