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ALSA: hda: cs35l56: Put ACPI device after setting companion

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[ Upstream commit aa2fbece1b ]

acpi_dev_get_first_match_dev() returns a refcounted ACPI device and
callers are expected to balance it with acpi_dev_put().

When no companion is already attached, cs35l56_hda_read_acpi() looks
up an ACPI device and sets it with ACPI_COMPANION_SET(), but leaves
the lookup reference held.

ACPI_COMPANION_SET() does not take ownership of that reference, so
drop it with acpi_dev_put() after attaching the companion.

Fixes: 73cfbfa9ca ("ALSA: hda/cs35l56: Add driver for Cirrus Logic CS35L56 amplifier")
Signed-off-by: Shuhao Fu <sfual@cse.ust.hk>
Tested-by: Simon Trimmer <simont@opensource.cirrus.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Link: https://patch.msgid.link/20260428080139.GA1649104@chcpu16
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Shuhao Fu
2026-06-01 17:43:11 +02:00
committed by Greg Kroah-Hartman
parent 508b1193d6
commit 542b49d2cf
1 changed files with 1 additions and 0 deletions
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sound/pci/hda/cs35l56_hda.c
+1
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@@ -855,6 +855,7 @@ static int cs35l56_hda_read_acpi(struct cs35l56_hda *cs35l56, int id)
return -ENODEV;
}
ACPI_COMPANION_SET(cs35l56->base.dev, adev);
acpi_dev_put(adev);
}
property = "cirrus,dev-index";