In cs35l56_hda_read_acpi() do not return if ACPI _SUB is missing.

A missing _SUB means that the driver cannot load a system-specific firmware, because the firmware is identified by the _SUB. But it can fallback to a generic firmware. Unfortunately this was being handled by immediately returning 0, which would skip the remaining ACPI configuration in cs35l56_hda_read_acpi() and so it would not get the RESET GPIO.

Signed-off-by: Richard Fitzgerald rf@opensource.cirrus.com Fixes: 73cfbfa9caea ("ALSA: hda/cs35l56: Add driver for Cirrus Logic CS35L56 amplifier") --- sound/pci/hda/cs35l56_hda.c | 12 +++++------- 1 file changed, 5 insertions(+), 7 deletions(-)

diff --git a/sound/pci/hda/cs35l56_hda.c b/sound/pci/hda/cs35l56_hda.c index bc75865b5de8..87ffe8fbff99 100644 --- a/sound/pci/hda/cs35l56_hda.c +++ b/sound/pci/hda/cs35l56_hda.c @@ -865,15 +865,13 @@ static int cs35l56_hda_read_acpi(struct cs35l56_hda *cs35l56, int id) sub = acpi_get_subsystem_id(ACPI_HANDLE(cs35l56->base.dev));

if (IS_ERR(sub)) { - /* If no ACPI SUB, return 0 and fallback to legacy firmware path, otherwise fail */ - if (PTR_ERR(sub) == -ENODATA) - return 0; - else - return PTR_ERR(sub); + dev_info(cs35l56->base.dev, + "Read ACPI _SUB failed(%ld): fallback to generic firmware\n", + PTR_ERR(sub)); + } else { + cs35l56->system_name = sub; }

- cs35l56->system_name = sub; - cs35l56->base.reset_gpio = devm_gpiod_get_index_optional(cs35l56->base.dev, "reset", cs35l56->index,