From dccc1810f41b42773a2e359907f05a7fd10910bd Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Tue, 8 Nov 2011 07:52:19 +0100 Subject: [PATCH] ALSA: hda - Mute unused capture sources for Realtek codecs When a Realtek codec has a matrix-style capture-source selection, we need to scan all connections instead of only imux items. Otherwise some input might be kept unmuted. Although the corresponding input must be dead so there should be no input from it, it's still safer to mute the route completely. Signed-off-by: Takashi Iwai --- sound/pci/hda/patch_realtek.c | 13 +++++++------ 1 file changed, 7 insertions(+), 6 deletions(-) diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c index a24e068a021b..308bb575bc06 100644 --- a/sound/pci/hda/patch_realtek.c +++ b/sound/pci/hda/patch_realtek.c @@ -284,7 +284,7 @@ static int alc_mux_select(struct hda_codec *codec, unsigned int adc_idx, struct alc_spec *spec = codec->spec; const struct hda_input_mux *imux; unsigned int mux_idx; - int i, type; + int i, type, num_conns; hda_nid_t nid; mux_idx = adc_idx >= spec->num_mux_defs ? 0 : adc_idx; @@ -307,16 +307,17 @@ static int alc_mux_select(struct hda_codec *codec, unsigned int adc_idx, spec->capsrc_nids[adc_idx] : spec->adc_nids[adc_idx]; /* no selection? */ - if (snd_hda_get_conn_list(codec, nid, NULL) <= 1) + num_conns = snd_hda_get_conn_list(codec, nid, NULL); + if (num_conns <= 1) return 1; type = get_wcaps_type(get_wcaps(codec, nid)); if (type == AC_WID_AUD_MIX) { /* Matrix-mixer style (e.g. ALC882) */ - for (i = 0; i < imux->num_items; i++) { - unsigned int v = (i == idx) ? 0 : HDA_AMP_MUTE; - snd_hda_codec_amp_stereo(codec, nid, HDA_INPUT, - imux->items[i].index, + int active = imux->items[idx].index; + for (i = 0; i < num_conns; i++) { + unsigned int v = (i == active) ? 0 : HDA_AMP_MUTE; + snd_hda_codec_amp_stereo(codec, nid, HDA_INPUT, i, HDA_AMP_MUTE, v); } } else { -- 2.39.2