[alsa-devel] [PATCH 1/3] ALSA: hda - do not add non-existing Mic boost controls

If the input node does not have any volume capable input amp, don't add such a control.

Signed-off-by: David Henningsson david.henningsson@canonical.com --- sound/pci/hda/hda_generic.c | 3 +++ 1 file changed, 3 insertions(+)

diff --git a/sound/pci/hda/hda_generic.c b/sound/pci/hda/hda_generic.c index 3ef38da..72325a9 100644 --- a/sound/pci/hda/hda_generic.c +++ b/sound/pci/hda/hda_generic.c @@ -2820,6 +2820,9 @@ static int parse_mic_boost(struct hda_codec *codec) struct nid_path *path; unsigned int val;

+ if (!nid_has_volume(codec, nid, HDA_INPUT)) + continue; + label = hda_get_autocfg_input_label(codec, cfg, i); if (prev_label && !strcmp(label, prev_label)) type_idx++;