ASoC: da7210: fix a memory leak if failed to initialise da7210 audio codec
Axel Lin [Fri, 23 Jul 2010 05:53:45 +0000 (05:53 +0000)]
da7210 should be kfreed if da7210_init() return error.
This patch also fixes the error handing in the case of snd_soc_register_dai()
fail by adding snd_soc_unregister_codec() in error path.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

sound/soc/codecs/da7210.c

index 3e42d1e..3c51d6a 100644 (file)
@@ -499,7 +499,7 @@ static int da7210_init(struct da7210_priv *da7210)
        ret = snd_soc_register_dai(&da7210_dai);
        if (ret) {
                dev_err(codec->dev, "Failed to register DAI: %d\n", ret);
-               goto init_err;
+               goto codec_err;
        }
 
        /* FIXME
@@ -585,6 +585,8 @@ static int da7210_init(struct da7210_priv *da7210)
 
        return ret;
 
+codec_err:
+       snd_soc_unregister_codec(codec);
 init_err:
        kfree(codec->reg_cache);
        codec->reg_cache = NULL;
@@ -612,8 +614,10 @@ static int __devinit da7210_i2c_probe(struct i2c_client *i2c,
        codec->control_data = i2c;
 
        ret = da7210_init(da7210);
-       if (ret < 0)
+       if (ret < 0) {
                pr_err("Failed to initialise da7210 audio codec\n");
+               kfree(da7210);
+       }
 
        return ret;
 }