X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=drivers%2Fnet%2Fppp_async.c;h=f1a52def1241a387c28ed6f5a045b839df8f994f;hb=2a5f2e3e6cd1ce9fb3f8b186b6bc9aa1f1497a92;hp=f023d5b67e6efcc38d1673ef56b9de8536371392;hpb=9418d5dc9ba40b88737580457bf3b7c63c60ec43;p=linux-2.6

diff --git a/drivers/net/ppp_async.c b/drivers/net/ppp_async.c
index f023d5b67e..f1a52def12 100644
--- 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)
@@ -358,9 +361,7 @@ ppp_asynctty_receive(struct tty_struct *tty, const unsigned char *buf,
 	if (!skb_queue_empty(&ap->rqueue))
 		tasklet_schedule(&ap->tsk);
 	ap_put(ap);
-	if (test_and_clear_bit(TTY_THROTTLED, &tty->flags)
-	    && tty->driver->unthrottle)
-		tty->driver->unthrottle(tty);
+	tty_unthrottle(tty);
 }
 
 static void
@@ -676,7 +677,7 @@ 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;