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ASoC: amd: acp-es8336: Drop reference count of ACPI device after use

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[ Upstream commit d784fc8be6814b31854f7b529919ca4506ff8066 ]

Theoretically the device might gone if its reference count drops to 0.
This might be the case when we try to find the first physical node of
the ACPI device. We need to keep reference to it until we get a result
of the above mentioned call. Refactor the code to drop the reference
count at the correct place.

While at it, move to acpi_dev_put() as symmetrical call to the
acpi_dev_get_first_match_dev().

Fixes: 02527c3f2300 ("ASoC: amd: add Machine driver for Jadeite platform")
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Vijendar Mukunda <Vijendar.Mukunda@amd.com>
Link: https://lore.kernel.org/r/20230112112356.67643-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Andy Shevchenko 2023-01-12 13:23:56 +02:00 committed by Greg Kroah-Hartman
parent ac949eae8d
commit 7b1ed88ec3
1 changed files with 4 additions and 2 deletions
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6
sound/soc/amd/acp-es8336.c
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@ -198,9 +198,11 @@ static int st_es8336_late_probe(struct snd_soc_card *card)
int ret;
adev = acpi_dev_get_first_match_dev("ESSX8336", NULL, -1);
if (adev)
put_device(&adev->dev);
if (!adev)
return -ENODEV;
codec_dev = acpi_get_first_physical_node(adev);
acpi_dev_put(adev);
if (!codec_dev)
dev_err(card->dev, "can not find codec dev\n");