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synced 2024-12-05 13:26:40 +07:00
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>
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12ffa6fc19
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@ -105,12 +105,12 @@ asoc_simple_card_sub_parse_of(struct device_node *np,
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/* get dai->name */
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ret = snd_soc_of_get_dai_name(np, name);
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if (ret < 0)
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goto parse_error;
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return ret;
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/* parse TDM slot */
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ret = snd_soc_of_parse_tdm_slot(np, &dai->slots, &dai->slot_width);
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if (ret)
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goto parse_error;
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return ret;
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/*
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* bitclock-inversion, frame-inversion
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@ -130,7 +130,7 @@ asoc_simple_card_sub_parse_of(struct device_node *np,
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clk = of_clk_get(np, 0);
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if (IS_ERR(clk)) {
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ret = PTR_ERR(clk);
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goto parse_error;
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return ret;
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}
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dai->sysclk = clk_get_rate(clk);
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@ -144,12 +144,7 @@ asoc_simple_card_sub_parse_of(struct device_node *np,
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dai->sysclk = clk_get_rate(clk);
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}
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ret = 0;
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parse_error:
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of_node_put(node);
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return ret;
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return 0;
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}
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static int asoc_simple_card_parse_of(struct device_node *node,
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@ -187,22 +182,26 @@ static int asoc_simple_card_parse_of(struct device_node *node,
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/* CPU sub-node */
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ret = -EINVAL;
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np = of_get_child_by_name(node, "simple-audio-card,cpu");
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if (np)
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if (np) {
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ret = asoc_simple_card_sub_parse_of(np, priv->daifmt,
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&priv->cpu_dai,
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&dai_link->cpu_of_node,
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&dai_link->cpu_dai_name);
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of_node_put(np);
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}
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if (ret < 0)
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return ret;
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/* CODEC sub-node */
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ret = -EINVAL;
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np = of_get_child_by_name(node, "simple-audio-card,codec");
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if (np)
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if (np) {
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ret = asoc_simple_card_sub_parse_of(np, priv->daifmt,
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&priv->codec_dai,
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&dai_link->codec_of_node,
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&dai_link->codec_dai_name);
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of_node_put(np);
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}
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if (ret < 0)
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return ret;
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@ -248,6 +247,27 @@ static int asoc_simple_card_parse_of(struct device_node *node,
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return 0;
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}
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/* update the reference count of the devices nodes at end of probe */
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static int asoc_simple_card_unref(struct platform_device *pdev)
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{
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struct snd_soc_card *card = platform_get_drvdata(pdev);
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struct snd_soc_dai_link *dai_link;
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struct device_node *np;
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int num_links;
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for (num_links = 0, dai_link = card->dai_link;
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num_links < card->num_links;
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num_links++, dai_link++) {
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np = (struct device_node *) dai_link->cpu_of_node;
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if (np)
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of_node_put(np);
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np = (struct device_node *) dai_link->codec_of_node;
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if (np)
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of_node_put(np);
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}
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return 0;
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}
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static int asoc_simple_card_probe(struct platform_device *pdev)
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{
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struct simple_card_data *priv;
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@ -275,7 +295,7 @@ static int asoc_simple_card_probe(struct platform_device *pdev)
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if (ret < 0) {
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if (ret != -EPROBE_DEFER)
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dev_err(dev, "parse error %d\n", ret);
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return ret;
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goto err;
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}
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} else {
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struct asoc_simple_card_info *cinfo;
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@ -318,7 +338,11 @@ static int asoc_simple_card_probe(struct platform_device *pdev)
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snd_soc_card_set_drvdata(&priv->snd_card, priv);
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return devm_snd_soc_register_card(&pdev->dev, &priv->snd_card);
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ret = devm_snd_soc_register_card(&pdev->dev, &priv->snd_card);
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err:
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asoc_simple_card_unref(pdev);
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return ret;
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}
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static const struct of_device_id asoc_simple_of_match[] = {
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