linux-kernel - [PATCH 14/15] sound/soc: imx: check kzalloc() result and fix memory leak

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Date:	Fri, 16 Jul 2010 20:16:34 +0400
From:	Kulikov Vasiliy <segooon@...il.com>
To:	kernel-janitors@...r.kernel.org
Cc:	Liam Girdwood <lrg@...mlogic.co.uk>,
	Mark Brown <broonie@...nsource.wolfsonmicro.com>,
	Jaroslav Kysela <perex@...ex.cz>, Takashi Iwai <tiwai@...e.de>,
	Sascha Hauer <s.hauer@...gutronix.de>,
	Javier Martin <javier.martin@...ta-silicon.com>,
	Tejun Heo <tj@...nel.org>, alsa-devel@...a-project.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH 14/15] sound/soc: imx: check kzalloc() result and fix memory leak

If kzalloc() fails we must exit with -ENOMEM. Also we must free
allocated runtime->private_data on error as it would be lost on next
call to snd_imx_open().

Signed-off-by: Kulikov Vasiliy <segooon@...il.com>
---
 sound/soc/imx/imx-pcm-dma-mx2.c |    6 +++++-
 1 files changed, 5 insertions(+), 1 deletions(-)

diff --git a/sound/soc/imx/imx-pcm-dma-mx2.c b/sound/soc/imx/imx-pcm-dma-mx2.c
index 05f19c9..0a595da 100644
--- a/sound/soc/imx/imx-pcm-dma-mx2.c
+++ b/sound/soc/imx/imx-pcm-dma-mx2.c
@@ -292,12 +292,16 @@ static int snd_imx_open(struct snd_pcm_substream *substream)
 	int ret;
 
 	iprtd = kzalloc(sizeof(*iprtd), GFP_KERNEL);
+	if (iprtd == NULL)
+		return -ENOMEM;
 	runtime->private_data = iprtd;
 
 	ret = snd_pcm_hw_constraint_integer(substream->runtime,
 			SNDRV_PCM_HW_PARAM_PERIODS);
-	if (ret < 0)
+	if (ret < 0) {
+		kfree(iprtd);
 		return ret;
+	}
 
 	snd_soc_set_runtime_hwparams(substream, &snd_imx_hardware);
 	return 0;
-- 
1.7.0.4

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