vt: invoke notifier on screen size change

commit 0c9b1965faddad7534b6974b5b36c4ad37998f8e upstream.

User space using poll() on /dev/vcs devices are not awaken when a
screen size change occurs. Let's fix that.

Signed-off-by: Nicolas Pitre <nico@linaro.org>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/tty/vt/vt.c b/drivers/tty/vt/vt.c
index 9d3e413..232cb0a 100644 (file)
--- a/drivers/tty/vt/vt.c
+++ b/drivers/tty/vt/vt.c
@@ -956,6 +956,7 @@ static int vc_do_resize(struct tty_struct *tty, struct vc_data *vc,
        if (con_is_visible(vc))
                update_screen(vc);
        vt_event_post(VT_EVENT_RESIZE, vc->vc_num, vc->vc_num);
+       notify_update(vc);
        return err;
 }