On Sun, Sep 11, 2016 at 4:14 PM, One Thousand Gnomes
[off-list ref] wrote:

On Fri,  9 Sep 2016 17:37:01 -0500
Rob Herring [off-list ref] wrote:

quoted

This patch series removes or prepares to remove some of the dependencies
on tty_struct within tty_port drivers. This will allow using tty_ports
directly for so called UART slave devices.

You can create a tty_struct kernel side with the two tiny changes I
posted before. Why do you want to do invasive tree wide changes when you
can do simple ones ?

Well, I don't want to do invasive changes, but I thought the idea was
to use tty_port struct without a tty_struct.

quoted

Next up after this are moving some functions to the tty_port ops. I've
got some WIP patches for some of that, but nothing ready to send out
quite yet.

I think before this lot happens you need to decide where these structures
belong. Termios and termios_locked for example could live in the tty_port
as the physical tty is incapable of having multiple sets of terminal data
at once.

I was planning to keep termios out of tty_port and make clients of
tty_port carry it if for nothing else not quite understanding all the
details around the lifetime, init and locking of it. If there's always
a tty_struct then there's not much point moving it other than which
struct makes more sense. But that would cause some churn.

Rob