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SubjectRe: [PATCH 05/10] ldisc: new dcd_change() method for line disciplines.
On Wed, 20 Aug 2008 00:49:31 +0200
Rodolfo Giometti <giometti@enneenne.com> wrote:

> On Tue, Aug 19, 2008 at 10:53:22PM +0100, Alan Cox wrote:
> > > + * void (*dcd_change)(struct uart_port *port, unsigned int status,
> > > + * struct timespec *ts)
> > > + *
> > > + * Tells the discipline that the DCD pin has changed its status and
> > > + * the relative timestamp. Pointer ts can be NULL.
> > > */
> >
> > uart_port is a specific property of a few random types of interface, pass
> > a tty struct up. Otherwise looks fine. Might one day expand it to a more
> > generic change type and pass info on what changed but thats a future
> > mystery.
>
> How can I get the struct uart_port pointer starting from struct
> tty_struct one?

A tty may not even have a uart structure. Why do you need to know the
interrupt (if such a concept even exists for the given tty) ?

Alan


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