tree 6cf6e1b2eff3ed51f0320bf9971eb27af8bf6e26
parent 6d27a63caad3f13e96cf065d2d96828c2006be6b
author Peter Hurley <peter@hurleysoftware.com> 1452494458 -0800
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1453879074 -0800

staging/speakup: Use tty_ldisc_ref() for paste kworker

As the function documentation for tty_ldisc_ref_wait() notes, it is
only callable from a tty file_operations routine; otherwise there
is no guarantee the ref won't be NULL.

The key difference with the VT's paste_selection() is that is an ioctl,
where __speakup_paste_selection() is completely async kworker, kicked
off from interrupt context.

Fixes: 28a821c30688 ("Staging: speakup: Update __speakup_paste_selection()
       tty (ab)usage to match vt")
Cc: <stable@vger.kernel.org>
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>