Johan Hovold 4054a3597d ASoC: stm32: sai: fix OF node leak on probe
commit 23261f0de0 upstream.

The reference taken to the sync provider OF node when probing the
platform device is currently only dropped if the set_sync() callback
fails during DAI probe.

Make sure to drop the reference on platform probe failures (e.g. probe
deferral) and on driver unbind.

This also avoids a potential use-after-free in case the DAI is ever
reprobed without first rebinding the platform driver.

Fixes: 5914d285f6 ("ASoC: stm32: sai: Add synchronization support")
Fixes: d4180b4c02 ("ASoC: stm32: sai: fix set_sync service")
Cc: Olivier Moysan <olivier.moysan@st.com>
Cc: stable@vger.kernel.org      # 4.16: d4180b4c02
Signed-off-by: Johan Hovold <johan@kernel.org>
Reviewed-by: olivier moysan <olivier.moysan@foss.st.com>
Link: https://patch.msgid.link/20251124104908.15754-4-johan@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2026-01-11 15:22:10 +01:00
2026-01-11 15:22:09 +01:00
2026-01-11 15:22:07 +01:00
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2025-12-07 06:18:54 +09:00
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Linux kernel
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There are several guides for kernel developers and users. These guides can
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There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
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