Hi,

Not sure, that it is a right place to ask. I would like to ask about 
status of 9-bit mode in the kernel.

Some uart-devices support 9-bit mode. AFAIU the most challenging part is 
user-space termios api.

I've found two patches in this list:

http://marc.info/?l=linux-serial&m=125856076927911&w=2
http://marc.info/?l=linux-serial&m=125856099128385&w=2

However, they are neither accepted nor commented. Is it because of wrong 
submission format?