This is a note to let you know that I've just added the patch titled
ASoC: stm32: dfsdm: manage cb buffers cleanup
to the 6.0-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
asoc-stm32-dfsdm-manage-cb-buffers-cleanup.patch
and it can be found in the queue-6.0 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 75d560cb88eb72835721e2a542e655fe409aa1f4
Author: Olivier Moysan <olivier.moysan@xxxxxxxxxxx>
Date: Wed Nov 9 18:08:49 2022 +0100
ASoC: stm32: dfsdm: manage cb buffers cleanup
[ Upstream commit 7d945b046be3d2605dbb1806e73095aadd7ae129 ]
Ensure that resources allocated by iio_channel_get_all_cb()
are released on driver unbind.
Signed-off-by: Olivier Moysan <olivier.moysan@xxxxxxxxxxx>
Link: https://lore.kernel.org/r/20221109170849.273719-1-olivier.moysan@xxxxxxxxxxx
Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
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;
