Ensure that resources allocated by iio_channel_get_all_cb()
are released on driver unbind.
Signed-off-by: Olivier Moysan <olivier.moysan@xxxxxxxxxxx>
---
sound/soc/stm/stm32_adfsdm.c | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/sound/soc/stm/stm32_adfsdm.c b/sound/soc/stm/stm32_adfsdm.c
index 643fc8a17018..837c1848d9bf 100644
--- a/sound/soc/stm/stm32_adfsdm.c
+++ b/sound/soc/stm/stm32_adfsdm.c
@@ -304,6 +304,11 @@ static int stm32_adfsdm_dummy_cb(const void *data, void *private)
return 0;
}
+static void stm32_adfsdm_cleanup(void *data)
+{
+ iio_channel_release_all_cb(data);
+}
+
static struct snd_soc_component_driver stm32_adfsdm_soc_platform = {
.open = stm32_adfsdm_pcm_open,
.close = stm32_adfsdm_pcm_close,
@@ -350,6 +355,12 @@ static int stm32_adfsdm_probe(struct platform_device *pdev)
if (IS_ERR(priv->iio_cb))
return PTR_ERR(priv->iio_cb);
+ ret = devm_add_action_or_reset(&pdev->dev, stm32_adfsdm_cleanup, priv->iio_cb);
+ if (ret < 0) {
+ dev_err(&pdev->dev, "Unable to add action\n");
+ return ret;
+ }
+
component = devm_kzalloc(&pdev->dev, sizeof(*component), GFP_KERNEL);
if (!component)
return -ENOMEM;
--
2.25.1
