ASoC: sdw_utils: fix double put_device() on aggregated amps

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In aggregation mode with two identical amplifiers,
a stress test that repeatedly triggers card unbind/rebind
can hit a NULL pointer dereference during the exit path.
ctx->amp_dev1 / ctx->amp_dev2 are single shared resources,
so the release must be safe against being called more than once.
Clear each pointer after put_device() so a second invocation
becomes a no-op, this could address NULL pointer dereference issue.

Signed-off-by: Jack Yu <jack.yu@realtek.com>
Link: https://patch.msgid.link/20260818023018.2564212-1-jack.yu@realtek.com
Signed-off-by: Mark Brown <broonie@kernel.org>

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Jack Yu 2026-08-18 10:30:18 +08:00 • committed by Mark Brown

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commit 046173b98d

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sound/soc/sdw_utils/soc_sdw_rt_amp.c

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