On Wed, 31 Aug 2011 21:24:58 +0200
Jiri Slaby [off-list ref] wrote:

I'm getting build errors such as:
.../tty/serial/max3107.c: In function ‘put_data_to_circ_buf’:
.../tty/serial/max3107.c:149:2: error: implicit declaration of function ‘tty_insert_flip_string’

Those drivers need to include linux/tty_flip.h. The question is
whether we want to fix them at all. As they are broken for some time
already and nobody noticed...

Config options randomly including it ?