From: Olivier Moysan Date: Wed, 9 Nov 2022 17:08:49 +0000 (+0100) Subject: ASoC: stm32: dfsdm: manage cb buffers cleanup X-Git-Tag: v5.15.92~1780 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=4c13ddb74f2c8fcda8bb971dabac7f07b71b7653;p=platform%2Fkernel%2Flinux-rpi.git 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 Link: https://lore.kernel.org/r/20221109170849.273719-1-olivier.moysan@foss.st.com Signed-off-by: Mark Brown Signed-off-by: Sasha Levin --- diff --git a/sound/soc/stm/stm32_adfsdm.c b/sound/soc/stm/stm32_adfsdm.c index e6078f5..1e9b4b1 100644 --- a/sound/soc/stm/stm32_adfsdm.c +++ b/sound/soc/stm/stm32_adfsdm.c @@ -303,6 +303,11 @@ 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, @@ -349,6 +354,12 @@ 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;