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ASoC: sti: initialize IRQ lock before requesting IRQ

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uni_reader_init() registers the shared IRQ before initializing
reader->irq_lock. A pending interrupt can invoke the handler while the
lock is still uninitialized.

Initialize the lock before registering the IRQ so the interrupt path
always sees valid lock state.

Fixes: d05d862ead ("ASoC: STI: Fix null ptr deference in IRQ handler")
Cc: stable@vger.kernel.org
Assisted-by: Codex:GPT-5
Signed-off-by: Runyu Xiao <runyu.xiao@seu.edu.cn>
Link: https://patch.msgid.link/20260830142026.2666914-1-runyu.xiao@seu.edu.cn
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Runyu Xiao 2026-08-30 22:20:26 +08:00 committed by Mark Brown
parent 173cb3147b
commit 04405aeef4
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GPG Key ID: 24D68B725D5487D0
1 changed files with 2 additions and 2 deletions
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4
sound/soc/sti/uniperif_reader.c
View File

@ -416,6 +416,8 @@ int uni_reader_init(struct platform_device *pdev,
else
reader->hw = &uni_reader_pcm_hw;
spin_lock_init(&reader->irq_lock);
ret = devm_request_irq(&pdev->dev, reader->irq,
uni_reader_irq_handler, IRQF_SHARED,
dev_name(&pdev->dev), reader);
@ -424,8 +426,6 @@ int uni_reader_init(struct platform_device *pdev,
return -EBUSY;
}
spin_lock_init(&reader->irq_lock);
return 0;
}
EXPORT_SYMBOL_GPL(uni_reader_init);