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path: root/drivers/tty/tty_ioctl.c
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Diffstat (limited to 'drivers/tty/tty_ioctl.c')
-rw-r--r--drivers/tty/tty_ioctl.c14
1 files changed, 9 insertions, 5 deletions
diff --git a/drivers/tty/tty_ioctl.c b/drivers/tty/tty_ioctl.c
index 0c188997145..1a1135d580a 100644
--- a/drivers/tty/tty_ioctl.c
+++ b/drivers/tty/tty_ioctl.c
@@ -486,7 +486,7 @@ int tty_termios_hw_change(struct ktermios *a, struct ktermios *b)
EXPORT_SYMBOL(tty_termios_hw_change);
/**
- * change_termios - update termios values
+ * tty_set_termios - update termios values
* @tty: tty to update
* @new_termios: desired new value
*
@@ -497,7 +497,7 @@ EXPORT_SYMBOL(tty_termios_hw_change);
* Locking: termios_mutex
*/
-static void change_termios(struct tty_struct *tty, struct ktermios *new_termios)
+int tty_set_termios(struct tty_struct *tty, struct ktermios *new_termios)
{
struct ktermios old_termios;
struct tty_ldisc *ld;
@@ -553,7 +553,9 @@ static void change_termios(struct tty_struct *tty, struct ktermios *new_termios)
tty_ldisc_deref(ld);
}
mutex_unlock(&tty->termios_mutex);
+ return 0;
}
+EXPORT_SYMBOL_GPL(tty_set_termios);
/**
* set_termios - set termios values for a tty
@@ -562,7 +564,7 @@ static void change_termios(struct tty_struct *tty, struct ktermios *new_termios)
* @opt: option information
*
* Helper function to prepare termios data and run necessary other
- * functions before using change_termios to do the actual changes.
+ * functions before using tty_set_termios to do the actual changes.
*
* Locking:
* Called functions take ldisc and termios_mutex locks
@@ -620,7 +622,7 @@ static int set_termios(struct tty_struct *tty, void __user *arg, int opt)
return -EINTR;
}
- change_termios(tty, &tmp_termios);
+ tty_set_termios(tty, &tmp_termios);
/* FIXME: Arguably if tmp_termios == tty->termios AND the
actual requested termios was not tmp_termios then we may
@@ -797,7 +799,7 @@ static int set_sgttyb(struct tty_struct *tty, struct sgttyb __user *sgttyb)
termios.c_ospeed);
#endif
mutex_unlock(&tty->termios_mutex);
- change_termios(tty, &termios);
+ tty_set_termios(tty, &termios);
return 0;
}
#endif
@@ -951,6 +953,8 @@ int tty_mode_ioctl(struct tty_struct *tty, struct file *file,
int ret = 0;
struct ktermios kterm;
+ BUG_ON(file == NULL);
+
if (tty->driver->type == TTY_DRIVER_TYPE_PTY &&
tty->driver->subtype == PTY_TYPE_MASTER)
real_tty = tty->link;