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ALSA: hda: cs35l56: Fix missing RESET GPIO if _SUB is missing 

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: 73cfbfa9ca ("ALSA: hda/cs35l56: Add driver for Cirrus Logic CS35L56 amplifier")
Link: https://lore.kernel.org/r/20230914152525.20829-1-rf@opensource.cirrus.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Richard Fitzgerald 2023-09-14 16:25:25 +01:00 committed by Takashi Iwai
parent 057a28ef93
commit 21484e43b9
1 changed files with 5 additions and 7 deletions
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12
sound/pci/hda/cs35l56_hda.c
View File

@ -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,