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ASoC: simple-card: Fix the reference count of device nodes 

The reference count of some device nodes is not correctly reset
at end of card probe.

Signed-off-by: Jean-Francois Moine <moinejf@free.fr>
Signed-off-by: Mark Brown <broonie@linaro.org>
This commit is contained in:
Jean-Francois Moine 2014-03-11 10:03:40 +01:00 committed by Mark Brown
parent 12ffa6fc19
commit e512e001da
1 changed files with 37 additions and 13 deletions
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50
sound/soc/generic/simple-card.c
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@ -105,12 +105,12 @@ asoc_simple_card_sub_parse_of(struct device_node *np,
/* get dai->name */
ret = snd_soc_of_get_dai_name(np, name);
if (ret < 0)
goto parse_error;
return ret;
/* parse TDM slot */
ret = snd_soc_of_parse_tdm_slot(np, &dai->slots, &dai->slot_width);
if (ret)
goto parse_error;
return ret;
/*
* bitclock-inversion, frame-inversion
@ -130,7 +130,7 @@ asoc_simple_card_sub_parse_of(struct device_node *np,
clk = of_clk_get(np, 0);
if (IS_ERR(clk)) {
ret = PTR_ERR(clk);
goto parse_error;
return ret;
}
dai->sysclk = clk_get_rate(clk);
@ -144,12 +144,7 @@ asoc_simple_card_sub_parse_of(struct device_node *np,
dai->sysclk = clk_get_rate(clk);
}
ret = 0;
parse_error:
of_node_put(node);
return ret;
return 0;
}
static int asoc_simple_card_parse_of(struct device_node *node,
@ -187,22 +182,26 @@ static int asoc_simple_card_parse_of(struct device_node *node,
/* CPU sub-node */
ret = -EINVAL;
np = of_get_child_by_name(node, "simple-audio-card,cpu");
if (np)
if (np) {
ret = asoc_simple_card_sub_parse_of(np, priv->daifmt,
&priv->cpu_dai,
&dai_link->cpu_of_node,
&dai_link->cpu_dai_name);
of_node_put(np);
}
if (ret < 0)
return ret;
/* CODEC sub-node */
ret = -EINVAL;
np = of_get_child_by_name(node, "simple-audio-card,codec");
if (np)
if (np) {
ret = asoc_simple_card_sub_parse_of(np, priv->daifmt,
&priv->codec_dai,
&dai_link->codec_of_node,
&dai_link->codec_dai_name);
of_node_put(np);
}
if (ret < 0)
return ret;
@ -248,6 +247,27 @@ static int asoc_simple_card_parse_of(struct device_node *node,
return 0;
}
/* update the reference count of the devices nodes at end of probe */
static int asoc_simple_card_unref(struct platform_device *pdev)
{
struct snd_soc_card *card = platform_get_drvdata(pdev);
struct snd_soc_dai_link *dai_link;
struct device_node *np;
int num_links;
for (num_links = 0, dai_link = card->dai_link;
num_links < card->num_links;
num_links++, dai_link++) {
np = (struct device_node *) dai_link->cpu_of_node;
if (np)
of_node_put(np);
np = (struct device_node *) dai_link->codec_of_node;
if (np)
of_node_put(np);
}
return 0;
}
static int asoc_simple_card_probe(struct platform_device *pdev)
{
struct simple_card_data *priv;
@ -275,7 +295,7 @@ static int asoc_simple_card_probe(struct platform_device *pdev)
if (ret < 0) {
if (ret != -EPROBE_DEFER)
dev_err(dev, "parse error %d\n", ret);
return ret;
goto err;
}
} else {
struct asoc_simple_card_info *cinfo;
@ -318,7 +338,11 @@ static int asoc_simple_card_probe(struct platform_device *pdev)
snd_soc_card_set_drvdata(&priv->snd_card, priv);
return devm_snd_soc_register_card(&pdev->dev, &priv->snd_card);
ret = devm_snd_soc_register_card(&pdev->dev, &priv->snd_card);
err:
asoc_simple_card_unref(pdev);
return ret;
}
static const struct of_device_id asoc_simple_of_match[] = {