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path: root/drivers/char/tty_io.c
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Diffstat (limited to 'drivers/char/tty_io.c')
-rw-r--r--drivers/char/tty_io.c16
1 files changed, 10 insertions, 6 deletions
diff --git a/drivers/char/tty_io.c b/drivers/char/tty_io.c
index 59f472143f0..db15f9ba7c0 100644
--- a/drivers/char/tty_io.c
+++ b/drivers/char/tty_io.c
@@ -1795,12 +1795,15 @@ retry_open:
}
#endif
if (device == MKDEV(TTYAUX_MAJOR, 1)) {
- driver = tty_driver_kref_get(console_device(&index));
- if (driver) {
- /* Don't let /dev/console block */
- filp->f_flags |= O_NONBLOCK;
- noctty = 1;
- goto got_driver;
+ struct tty_driver *console_driver = console_device(&index);
+ if (console_driver) {
+ driver = tty_driver_kref_get(console_driver);
+ if (driver) {
+ /* Don't let /dev/console block */
+ filp->f_flags |= O_NONBLOCK;
+ noctty = 1;
+ goto got_driver;
+ }
}
mutex_unlock(&tty_mutex);
return -ENODEV;
@@ -2015,6 +2018,7 @@ static int tiocsti(struct tty_struct *tty, char __user *p)
return -EPERM;
if (get_user(ch, p))
return -EFAULT;
+ tty_audit_tiocsti(tty, ch);
ld = tty_ldisc_ref_wait(tty);
ld->ops->receive_buf(tty, &ch, &mbz, 1);
tty_ldisc_deref(ld);