[alsa-devel] [PATCH v2] sound: soc: fsl: Fix memory leak in imx-audmux.c

[Felipe Pena]

When audmux_clk is used and clk_prepare_enable function succeed,
the memory alloc'd to buf variable is leaked

Signed-off-by: Felipe Pena <felipensp at gmail.com>
---
 sound/soc/fsl/imx-audmux.c |    9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/sound/soc/fsl/imx-audmux.c b/sound/soc/fsl/imx-audmux.c
index d3bf71a..ac86993 100644
--- a/sound/soc/fsl/imx-audmux.c
+++ b/sound/soc/fsl/imx-audmux.c
@@ -66,13 +66,10 @@ static ssize_t audmux_read_file(struct file *file, char __user *user_buf,
 				size_t count, loff_t *ppos)
 {
 	ssize_t ret;
-	char *buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
+	char *buf;
 	int port = (int)file->private_data;
 	u32 pdcr, ptcr;
 
-	if (!buf)
-		return -ENOMEM;
-
 	if (audmux_clk) {
 		ret = clk_prepare_enable(audmux_clk);
 		if (ret)
@@ -85,6 +82,10 @@ static ssize_t audmux_read_file(struct file *file, char __user *user_buf,
 	if (audmux_clk)
 		clk_disable_unprepare(audmux_clk);
 
+	buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
+	if (!buf)
+		return -ENOMEM;
+
 	ret = snprintf(buf, PAGE_SIZE, "PDCR: %08x\nPTCR: %08x\n",
 		       pdcr, ptcr);
 
-- 
1.7.10.4