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path: root/drivers/net/ppp_synctty.c
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Diffstat (limited to 'drivers/net/ppp_synctty.c')
-rw-r--r--drivers/net/ppp_synctty.c9
1 files changed, 6 insertions, 3 deletions
diff --git a/drivers/net/ppp_synctty.c b/drivers/net/ppp_synctty.c
index 0d80fa546719..48ed5fdbfe18 100644
--- a/drivers/net/ppp_synctty.c
+++ b/drivers/net/ppp_synctty.c
@@ -207,6 +207,9 @@ ppp_sync_open(struct tty_struct *tty)
struct syncppp *ap;
int err;
+ if (tty->ops->write == NULL)
+ return -EOPNOTSUPP;
+
ap = kzalloc(sizeof(*ap), GFP_KERNEL);
err = -ENOMEM;
if (!ap)
@@ -399,8 +402,8 @@ ppp_sync_receive(struct tty_struct *tty, const unsigned char *buf,
tasklet_schedule(&ap->tsk);
sp_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
@@ -653,7 +656,7 @@ ppp_sync_push(struct syncppp *ap)
tty_stuffed = 0;
if (!tty_stuffed && ap->tpkt) {
set_bit(TTY_DO_WRITE_WAKEUP, &tty->flags);
- sent = tty->driver->write(tty, ap->tpkt->data, ap->tpkt->len);
+ sent = tty->ops->write(tty, ap->tpkt->data, ap->tpkt->len);
if (sent < 0)
goto flush; /* error, e.g. loss of CD */
if (sent < ap->tpkt->len) {