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Subject[PATCH 8/8] ASoC: phycore-ac97: fix resource leak
From
Date
Fix imx_phycore_init() error path and imx_phycore_exit() to properly free
allocated resources.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
---
sound/soc/imx/phycore-ac97.c | 28 +++++++++++++++++++++-------
1 files changed, 21 insertions(+), 7 deletions(-)

diff --git a/sound/soc/imx/phycore-ac97.c b/sound/soc/imx/phycore-ac97.c
index db157f7..a7deb5c 100644
--- a/sound/soc/imx/phycore-ac97.c
+++ b/sound/soc/imx/phycore-ac97.c
@@ -42,6 +42,7 @@ static struct snd_soc_card imx_phycore = {
.num_links = ARRAY_SIZE(imx_phycore_dai_ac97),
};

+static struct platform_device *imx_phycore_snd_ac97_device;
static struct platform_device *imx_phycore_snd_device;

static int __init imx_phycore_init(void)
@@ -52,29 +53,42 @@ static int __init imx_phycore_init(void)
/* return happy. We might run on a totally different machine */
return 0;

- imx_phycore_snd_device = platform_device_alloc("soc-audio", -1);
- if (!imx_phycore_snd_device)
+ imx_phycore_snd_ac97_device = platform_device_alloc("soc-audio", -1);
+ if (!imx_phycore_snd_ac97_device)
return -ENOMEM;

- platform_set_drvdata(imx_phycore_snd_device, &imx_phycore);
- ret = platform_device_add(imx_phycore_snd_device);
+ platform_set_drvdata(imx_phycore_snd_ac97_device, &imx_phycore);
+ ret = platform_device_add(imx_phycore_snd_ac97_device);
+ if (ret)
+ goto fail1;

imx_phycore_snd_device = platform_device_alloc("wm9712-codec", -1);
- if (!imx_phycore_snd_device)
- return -ENOMEM;
+ if (!imx_phycore_snd_device) {
+ ret = -ENOMEM;
+ goto fail2;
+ }
ret = platform_device_add(imx_phycore_snd_device);

if (ret) {
printk(KERN_ERR "ASoC: Platform device allocation failed\n");
- platform_device_put(imx_phycore_snd_device);
+ goto fail3;
}

+ return 0;
+
+fail3:
+ platform_device_put(imx_phycore_snd_device);
+fail2:
+ platform_device_del(imx_phycore_snd_ac97_device);
+fail1:
+ platform_device_put(imx_phycore_snd_ac97_device);
return ret;
}

static void __exit imx_phycore_exit(void)
{
platform_device_unregister(imx_phycore_snd_device);
+ platform_device_unregister(imx_phycore_snd_ac97_device);
}

late_initcall(imx_phycore_init);
--
1.7.2




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