From mboxrd@z Thu Jan 1 00:00:00 1970 From: Richard Genoud Subject: [RFC PATCH 11/13] sound: atmel-pcm-dma: check pointer before dereference Date: Mon, 1 Jul 2013 10:39:36 +0200 Message-ID: <1372667978-4718-12-git-send-email-richard.genoud@gmail.com> References: <1372667978-4718-1-git-send-email-richard.genoud@gmail.com> Return-path: In-Reply-To: <1372667978-4718-1-git-send-email-richard.genoud@gmail.com> Sender: linux-kernel-owner@vger.kernel.org To: devicetree-discuss@lists.ozlabs.org Cc: linux-arm-kernel@lists.infradead.org, Nicolas Ferre , =?UTF-8?q?Uwe=20Kleine-K=C3=B6nig?= , linux-kernel@vger.kernel.org, Richard Genoud List-Id: devicetree@vger.kernel.org If platform_data is NULL, filter() is called with a NULL slave parameter. Signed-off-by: Richard Genoud --- sound/soc/atmel/atmel-pcm-dma.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/sound/soc/atmel/atmel-pcm-dma.c b/sound/soc/atmel/atmel-pcm-dma.c index 1d38fd0..b20dbba 100644 --- a/sound/soc/atmel/atmel-pcm-dma.c +++ b/sound/soc/atmel/atmel-pcm-dma.c @@ -96,6 +96,9 @@ static bool filter(struct dma_chan *chan, void *slave) { struct at_dma_slave *sl = slave; + if (!sl) + return false; + if (sl->dma_dev == chan->device->dev) { chan->private = sl; return true; -- 1.7.10.4