Re: [PATCH] U6715 16550A serial driver support

[Alan Cox <alan@lxorguk.ukuu.org.uk>]

> In 16550A auto-configuration, if the fifo size is 64 then it's an U6 16550A port

That may not be reliable given the other 8250 clones around but looks
generally sane.


> @@ -2238,6 +2254,10 @@ serial8250_set_termios(struct uart_port *port, struct ktermios *termios,
>  	unsigned long flags;
>  	unsigned int baud, quot;
>  
> +	/* Possibly call pre_set_termios function.  */
> +	if (port->pre_set_termios)
> +		port->pre_set_termios(port, termios, old);
> +

Ok I think it might be better to have

serial8250_do_set_termios(...)
{
	/* Existing set_termios code here */
}
EXPORT_SYMBOL(serial8250_do_set_termios);

serial8250_set_termios(...)
{
	if (port->set_termios)
		return port->set_termios(...)
	else
		serial8250_do_set_termions(...)
}

That allows people to wrap it with before/after/both handling, or replace
it entirely.

So in your case it would

my_set_termios()
{
	/* pre set termios code here */
	return serial8250_do_set_termios();
}


Looks ok to me though - it splits the special bits out from the core
nicely