From: Jaroslav Kysela <perex@xxxxxxxx> commit 1f092d1c8819679d78a7d9c62a46d4939d217a9d upstream. The ThinkPad X395 latop does not have the internal digital microphone connected to the AMD's ACP bridge, but it's advertised via BIOS. The internal microphone is connected to the HDA codec. Use DMI to block the microphone PCM device for this platform. BugLink: https://bugzilla.redhat.com/show_bug.cgi?id=1892115 Cc: <stable@xxxxxxxxxx> Signed-off-by: Jaroslav Kysela <perex@xxxxxxxx> Link: https://lore.kernel.org/r/20201227164109.269973-1-perex@xxxxxxxx Signed-off-by: Mark Brown <broonie@xxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- sound/soc/amd/renoir/rn-pci-acp3x.c | 7 +++++++ 1 file changed, 7 insertions(+) --- a/sound/soc/amd/renoir/rn-pci-acp3x.c +++ b/sound/soc/amd/renoir/rn-pci-acp3x.c @@ -171,6 +171,13 @@ static const struct dmi_system_id rn_acp DMI_EXACT_MATCH(DMI_BOARD_NAME, "LNVNB161216"), } }, + { + /* Lenovo ThinkPad X395 */ + .matches = { + DMI_EXACT_MATCH(DMI_BOARD_VENDOR, "LENOVO"), + DMI_EXACT_MATCH(DMI_BOARD_NAME, "20NLCTO1WW"), + } + }, {} };
