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ASoC: mediatek: mt8192: Release reserved memory on cleanup

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commit 965e17ae67 upstream.

The MT8192 AFE probe calls of_reserved_mem_device_init() and falls
back to preallocated buffers when no reserved memory region is
available. When the reserved memory assignment succeeds, however, the
driver never releases it.

Register a devm cleanup action after a successful reserved-memory
assignment so the assignment is released on probe failure and driver
unbind.

Fixes: ec4a10ca4a ("ASoC: mediatek: use reserved memory or enable buffer pre-allocation")
Cc: stable@vger.kernel.org
Signed-off-by: Cássio Gabriel <cassiogabrielcontato@gmail.com>
Link: https://patch.msgid.link/20260527-asoc-mt8192-probe-cleanup-v1-1-1bb834d05b72@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Cássio Gabriel
2026-07-24 16:03:31 +02:00
committed by Greg Kroah-Hartman
parent ee781058cd
commit 989cbe8cc8
1 changed files with 9 additions and 0 deletions
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sound/soc/mediatek/mt8192/mt8192-afe-pcm.c
+9
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@@ -2171,6 +2171,11 @@ static const dai_register_cb dai_register_cbs[] = {
mt8192_dai_memif_register,
};
static void mt8192_afe_release_reserved_mem(void *data)
{
of_reserved_mem_device_release(data);
}
static int mt8192_afe_pcm_dev_probe(struct platform_device *pdev)
{
struct mtk_base_afe *afe;
@@ -2201,6 +2206,10 @@ static int mt8192_afe_pcm_dev_probe(struct platform_device *pdev)
if (ret) {
dev_info(dev, "no reserved memory found, pre-allocating buffers instead\n");
afe->preallocate_buffers = true;
} else {
ret = devm_add_action_or_reset(dev, mt8192_afe_release_reserved_mem, dev);
if (ret)
return ret;
}
/* init audio related clock */