Unverified Commit fb629fa2 authored by Sylwester Nawrocki's avatar Sylwester Nawrocki Committed by Mark Brown
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ASoC: samsung: arndale: Add missing OF node dereferencing



Ensure there is no OF node references kept when the driver
is removed/unbound.

Reviewed-by: default avatarCharles Keepax <ckeepax@opensource.cirrus.com>
Signed-off-by: default avatarSylwester Nawrocki <s.nawrocki@samsung.com>
Acked-by: default avatarKrzysztof Kozlowski <krzk@kernel.org>
Link: https://lore.kernel.org/r/20190920130218.32690-3-s.nawrocki@samsung.com


Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent 147162f5
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+30 −4
Original line number Diff line number Diff line
@@ -5,6 +5,7 @@
//  Author: Claude <claude@insginal.co.kr>

#include <linux/module.h>
#include <linux/of_device.h>
#include <linux/platform_device.h>
#include <linux/clk.h>

@@ -74,6 +75,17 @@ static struct snd_soc_card arndale_rt5631 = {
	.num_links = ARRAY_SIZE(arndale_rt5631_dai),
};

static void arndale_put_of_nodes(struct snd_soc_card *card)
{
	struct snd_soc_dai_link *dai_link;
	int i;

	for_each_card_prelinks(card, i, dai_link) {
		of_node_put(dai_link->cpus->of_node);
		of_node_put(dai_link->codecs->of_node);
	}
}

static int arndale_audio_probe(struct platform_device *pdev)
{
	int n, ret;
@@ -103,18 +115,31 @@ static int arndale_audio_probe(struct platform_device *pdev)
		if (!arndale_rt5631_dai[0].codecs->of_node) {
			dev_err(&pdev->dev,
			"Property 'samsung,audio-codec' missing or invalid\n");
			return -EINVAL;
			ret = -EINVAL;
			goto err_put_of_nodes;
		}
	}

	ret = devm_snd_soc_register_card(card->dev, card);

	if (ret)
	if (ret) {
		dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n", ret);
		goto err_put_of_nodes;
	}
	return 0;

err_put_of_nodes:
	arndale_put_of_nodes(card);
	return ret;
}

static int arndale_audio_remove(struct platform_device *pdev)
{
	struct snd_soc_card *card = platform_get_drvdata(pdev);

	arndale_put_of_nodes(card);
	return 0;
}

static const struct of_device_id samsung_arndale_rt5631_of_match[] __maybe_unused = {
	{ .compatible = "samsung,arndale-rt5631", },
	{ .compatible = "samsung,arndale-alc5631", },
@@ -129,6 +154,7 @@ static struct platform_driver arndale_audio_driver = {
		.of_match_table = of_match_ptr(samsung_arndale_rt5631_of_match),
	},
	.probe = arndale_audio_probe,
	.remove = arndale_audio_remove,
};

module_platform_driver(arndale_audio_driver);