summaryrefslogtreecommitdiffstats
path: root/drivers/tty/tty_io.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/tty/tty_io.c')
-rw-r--r--drivers/tty/tty_io.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/tty/tty_io.c b/drivers/tty/tty_io.c
index 28c3e86..41e42f1 100644
--- a/drivers/tty/tty_io.c
+++ b/drivers/tty/tty_io.c
@@ -1415,6 +1415,10 @@ struct tty_struct *tty_init_dev(struct tty_driver *driver, int idx)
if (!tty->port)
tty->port = driver->ports[idx];
+ WARN_RATELIMIT(!tty->port,
+ "%s: %s driver does not set tty->port. This will crash the kernel later. Fix the driver!\n",
+ __func__, tty->driver->name);
+
/*
* Structures all installed ... call the ldisc open routines.
* If we fail here just call release_tty to clean up. No need
OpenPOWER on IntegriCloud