From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752509AbaE0XO7 (ORCPT ); Tue, 27 May 2014 19:14:59 -0400 Received: from aserp1040.oracle.com ([141.146.126.69]:35304 "EHLO aserp1040.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751363AbaE0XO6 (ORCPT ); Tue, 27 May 2014 19:14:58 -0400 From: Sasha Levin To: w.d.hubbs@gmail.com, chris@the-brannons.com, kirk@reisers.ca, samuel.thibault@ens-lyon.org, gregkh@linuxfoundation.org Cc: speakup@braille.uwo.ca, devel@driverdev.osuosl.org, linux-kernel@vger.kernel.org, Sasha Levin Subject: [PATCH] Staging: speakup: don't die if accessing sysfs without synth Date: Tue, 27 May 2014 19:08:36 -0400 Message-Id: <1401232116-31740-1-git-send-email-sasha.levin@oracle.com> X-Mailer: git-send-email 1.9.1 X-Source-IP: ucsinet22.oracle.com [156.151.31.94] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Setting a 'silent' parameter without a synth would crash the kernel. Signed-off-by: Sasha Levin --- drivers/staging/speakup/synth.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/staging/speakup/synth.c b/drivers/staging/speakup/synth.c index 0b3549b..172cf62 100644 --- a/drivers/staging/speakup/synth.c +++ b/drivers/staging/speakup/synth.c @@ -212,6 +212,9 @@ void synth_start(void) void spk_do_flush(void) { + if (!synth) + return; + speakup_info.flushing = 1; synth_buffer_clear(); if (synth->alive) { -- 1.7.10.4