linux-kernel - [PATCH] ASoC: wm_adsp: fix possible memory leak in wm_adsp_load

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Date:	Tue, 12 Mar 2013 00:23:15 +0800
From:	Wei Yongjun <weiyj.lk@...il.com>
To:	broonie@...nsource.wolfsonmicro.com, lgirdwood@...il.com,
	perex@...ex.cz, tiwai@...e.de
Cc:	yongjun_wei@...ndmicro.com.cn, patches@...nsource.wolfsonmicro.com,
	alsa-devel@...a-project.org, linux-kernel@...r.kernel.org
Subject: [PATCH] ASoC: wm_adsp: fix possible memory leak in wm_adsp_load_coeff()

From: Wei Yongjun <yongjun_wei@...ndmicro.com.cn>

'file' is malloced in wm_adsp_load_coeff() and should be freed
before leaving from the error handling cases, otherwise it will cause
memory leak.

Signed-off-by: Wei Yongjun <yongjun_wei@...ndmicro.com.cn>
---
 sound/soc/codecs/wm_adsp.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/sound/soc/codecs/wm_adsp.c b/sound/soc/codecs/wm_adsp.c
index f3f7e75..9af1bdd 100644
--- a/sound/soc/codecs/wm_adsp.c
+++ b/sound/soc/codecs/wm_adsp.c
@@ -828,7 +828,8 @@ static int wm_adsp_load_coeff(struct wm_adsp *dsp)
 						&buf_list);
 			if (!buf) {
 				adsp_err(dsp, "Out of memory\n");
-				return -ENOMEM;
+				ret = -ENOMEM;
+				goto out_fw;
 			}
 
 			adsp_dbg(dsp, "%s.%d: Writing %d bytes at %x\n",
@@ -865,7 +866,7 @@ out_fw:
 	wm_adsp_buf_free(&buf_list);
 out:
 	kfree(file);
-	return 0;
+	return ret;
 }
 
 int wm_adsp1_init(struct wm_adsp *adsp)


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