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ALSA: hda/realtek - Fix missing inits of item indices for auto-mic 

When the imux entries are rebuilt in alc_rebuild_imux_for_auto_mic(),
the initialization of index field is missing.  It may work without it
casually when the original imux was created by the auto-parser, but
it's definitely broken in the case of static configs where no imux was
parsed beforehand.  Because of this, the auto-mic switching doesn't
work properly on some model options.

This patch adds the missing initialization of index field.

Reported-by: Dmitry Nezhevenko <dion@inhex.net>
Cc: <stable@kernel.org> [v3.1]
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2011-11-23 07:38:59 +01:00
parent 6dfeb703e3
commit 6759dc3238
1 changed files with 13 additions and 1 deletions
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14
sound/pci/hda/patch_realtek.c
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@ -1054,8 +1054,20 @@ static bool alc_rebuild_imux_for_auto_mic(struct hda_codec *codec)
spec->imux_pins[2] = spec->dock_mic_pin;
for (i = 0; i < 3; i++) {
strcpy(imux->items[i].label, texts[i]);
if (spec->imux_pins[i])
if (spec->imux_pins[i]) {
hda_nid_t pin = spec->imux_pins[i];
int c;
for (c = 0; c < spec->num_adc_nids; c++) {
hda_nid_t cap = spec->capsrc_nids ?
spec->capsrc_nids[c] : spec->adc_nids[c];
int idx = get_connection_index(codec, cap, pin);
if (idx >= 0) {
imux->items[i].index = idx;
break;
}
}
imux->num_items = i + 1;
}
}
spec->num_mux_defs = 1;
spec->input_mux = imux;