staging/speakup: Use tty_ldisc_ref() for paste kworker

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[ Upstream commit f4f9edcf9b ]

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: 28a821c306 ("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>

Signed-off-by: Sasha Levin <sasha.levin@oracle.com>

...

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Peter Hurley 2016-01-10 22:40:58 -08:00 • committed by Sasha Levin

parent 28b824966a

commit d515d71088

1 changed files with 4 additions and 1 deletions

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drivers/staging/speakup/selection.c

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