Ensure there is no OF node references kept when the driver is removed/unbound.
Signed-off-by: Sylwester Nawrocki <s.nawrocki@xxxxxxxxxxx>
---
sound/soc/samsung/arndale_rt5631.c | 31 ++++++++++++++++++++++++++++--
1 file changed, 29 insertions(+), 2 deletions(-)
diff --git a/sound/soc/samsung/arndale_rt5631.c b/sound/soc/samsung/arndale_rt5631.c
index 3744c47742b8..d8da313e898a 100644
--- a/sound/soc/samsung/arndale_rt5631.c
+++ b/sound/soc/samsung/arndale_rt5631.c
@@ -132,6 +132,17 @@ static struct snd_soc_card arndale_wm1811 = {
.num_links = ARRAY_SIZE(arndale_wm1811_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)
{
struct device_node *np = pdev->dev.of_node;
@@ -156,16 +167,31 @@ static int arndale_audio_probe(struct platform_device *pdev)
if (!dai_link->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 arndale_audio_of_match[] __maybe_unused = {
{ .compatible = "samsung,arndale-rt5631", .data = &arndale_rt5631 },
{ .compatible = "samsung,arndale-alc5631", .data = &arndale_rt5631 },
@@ -181,6 +207,7 @@ static struct platform_driver arndale_audio_driver = {
.of_match_table = arndale_audio_of_match,
},
.probe = arndale_audio_probe,
+ .remove = arndale_audio_remove,
};
module_platform_driver(arndale_audio_driver);
--
2.17.1
