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ASoC: codecs: wcd938x-sdw: fix use after free on driver unbind

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commit f0dfdcbe706462495d47982eecd13a61aabd644d upstream.

Make sure to deregister the component when the driver is being unbound
and before the underlying device-managed resources are freed.

Fixes: 16572522ae ("ASoC: codecs: wcd938x-sdw: add SoundWire driver")
Cc: stable@vger.kernel.org      # 5.14
Cc: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
Link: https://lore.kernel.org/r/20231003155558.27079-7-johan+linaro@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Johan Hovold 2023-10-03 17:55:57 +02:00 • committed by Greg Kroah-Hartman
parent d496b6638c
commit 0d912daab4
1 changed files with 10 additions and 0 deletions
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10
sound/soc/codecs/wcd938x-sdw.c
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@ -1281,6 +1281,15 @@ static int wcd9380_probe(struct sdw_slave *pdev,
return component_add(dev, &wcd938x_sdw_component_ops);
}
static int wcd9380_remove(struct sdw_slave *pdev)
{
struct device *dev = &pdev->dev;
component_del(dev, &wcd938x_sdw_component_ops);
return 0;
}
static const struct sdw_device_id wcd9380_slave_id[] = {
SDW_SLAVE_ENTRY(0x0217, 0x10d, 0),
{},
@ -1320,6 +1329,7 @@ static const struct dev_pm_ops wcd938x_sdw_pm_ops = {
static struct sdw_driver wcd9380_codec_driver = {
.probe = wcd9380_probe,
.remove = wcd9380_remove,
.ops = &wcd9380_slave_ops,
.id_table = wcd9380_slave_id,
.driver = {