tty: The big operations rework

[linux-2.6-omap-h63xx.git] / drivers / net / ppp_async.c

diff --git a/drivers/net/ppp_async.c b/drivers/net/ppp_async.c
index f023d5b67e6efcc38d1673ef56b9de8536371392..1c4b7e37912c776afebb49f505d77bc6f03975af 100644 (file)
--- a/drivers/net/ppp_async.c
+++ b/drivers/net/ppp_async.c
@@ -158,6 +158,9 @@ ppp_asynctty_open(struct tty_struct *tty)
        struct asyncppp *ap;
        int err;
 
+       if (tty->ops->write == NULL)
+               return -EOPNOTSUPP;
+
        err = -ENOMEM;
        ap = kzalloc(sizeof(*ap), GFP_KERNEL);
        if (!ap)
@@ -359,8 +362,8 @@ ppp_asynctty_receive(struct tty_struct *tty, const unsigned char *buf,
                tasklet_schedule(&ap->tsk);
        ap_put(ap);
        if (test_and_clear_bit(TTY_THROTTLED, &tty->flags)
-           && tty->driver->unthrottle)
-               tty->driver->unthrottle(tty);
+           && tty->ops->unthrottle)
+               tty->ops->unthrottle(tty);
 }
 
 static void
@@ -676,7 +679,7 @@ ppp_async_push(struct asyncppp *ap)
                if (!tty_stuffed && ap->optr < ap->olim) {
                        avail = ap->olim - ap->optr;
                        set_bit(TTY_DO_WRITE_WAKEUP, &tty->flags);
-                       sent = tty->driver->write(tty, ap->optr, avail);
+                       sent = tty->ops->write(tty, ap->optr, avail);
                        if (sent < 0)
                                goto flush;     /* error, e.g. loss of CD */
                        ap->optr += sent;