tty: WARN for attempted set_termios() of pty master

The pty master's termios should never be set; currently, all code
paths which call the driver's set_termios() method ensure that the
pty slave's termios is being set.

Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Reviewed-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 0 insertions, 2 deletions

diff --git a/drivers/tty/pty.c b/drivers/tty/pty.c
index 4c0218db85ad..6c7602592fe0 100644
--- a/drivers/tty/pty.c
+++ b/drivers/tty/pty.c
@@ -477,7 +477,6 @@ static const struct tty_operations master_pty_ops_bsd = {
         .flush_buffer = pty_flush_buffer,
         .chars_in_buffer = pty_chars_in_buffer,
         .unthrottle = pty_unthrottle,
-        .set_termios = pty_set_termios,
         .ioctl = pty_bsd_ioctl,
         .cleanup = pty_cleanup,
         .resize = pty_resize,
@@ -654,7 +653,6 @@ static const struct tty_operations ptm_unix98_ops = {
         .flush_buffer = pty_flush_buffer,
         .chars_in_buffer = pty_chars_in_buffer,
         .unthrottle = pty_unthrottle,
-        .set_termios = pty_set_termios,
         .ioctl = pty_unix98_ioctl,
         .resize = pty_resize,
         .shutdown = pty_unix98_shutdown,