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ASoC: stm32: dfsdm: manage cb buffers cleanup

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[ 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@foss.st.com>
Link: https://lore.kernel.org/r/20221109170849.273719-1-olivier.moysan@foss.st.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Olivier Moysan
2022-11-09 18:08:49 +01:00
committed by Greg Kroah-Hartman
parent dd82295a23
commit 4c13ddb74f
1 changed files with 11 additions and 0 deletions
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11
sound/soc/stm/stm32_adfsdm.c
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@@ -303,6 +303,11 @@ static int stm32_adfsdm_dummy_cb(const void *data, void *private)
return 0; 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 = { static struct snd_soc_component_driver stm32_adfsdm_soc_platform = {
.open = stm32_adfsdm_pcm_open, .open = stm32_adfsdm_pcm_open,
.close = stm32_adfsdm_pcm_close, .close = stm32_adfsdm_pcm_close,
@@ -349,6 +354,12 @@ static int stm32_adfsdm_probe(struct platform_device *pdev)
if (IS_ERR(priv->iio_cb)) if (IS_ERR(priv->iio_cb))
return PTR_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); component = devm_kzalloc(&pdev->dev, sizeof(*component), GFP_KERNEL);
if (!component) if (!component)
return -ENOMEM; return -ENOMEM;