tty: Ldisc revamp
Move the line disciplines towards a conventional ->ops arrangement. For
the moment the actual 'tty_ldisc' struct in the tty is kept as part of
the tty struct but this can then be changed if it turns out that when it
all settles down we want to refcount ldiscs separately to the tty.
Pull the ldisc code out of /proc and put it with our ldisc code.
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/drivers/char/pty.c b/drivers/char/pty.c
index 0a05c03..76b2793 100644
--- a/drivers/char/pty.c
+++ b/drivers/char/pty.c
@@ -111,7 +111,7 @@
c = to->receive_room;
if (c > count)
c = count;
- to->ldisc.receive_buf(to, buf, NULL, c);
+ to->ldisc.ops->receive_buf(to, buf, NULL, c);
return c;
}
@@ -149,11 +149,11 @@
int count;
/* We should get the line discipline lock for "tty->link" */
- if (!to || !to->ldisc.chars_in_buffer)
+ if (!to || !to->ldisc.ops->chars_in_buffer)
return 0;
/* The ldisc must report 0 if no characters available to be read */
- count = to->ldisc.chars_in_buffer(to);
+ count = to->ldisc.ops->chars_in_buffer(to);
if (tty->driver->subtype == PTY_TYPE_SLAVE) return count;
@@ -186,8 +186,8 @@
if (!to)
return;
- if (to->ldisc.flush_buffer)
- to->ldisc.flush_buffer(to);
+ if (to->ldisc.ops->flush_buffer)
+ to->ldisc.ops->flush_buffer(to);
if (to->packet) {
spin_lock_irqsave(&tty->ctrl_lock, flags);