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ALSA: hda - Fix empty DAC filling in patch_via.c 

In via_auto_fill_adc_nids(), the parser tries to fill dac_nids[] at
the point of the current line-out (i).  When no valid path is found
for this output, this results in dac = 0, thus it creates a hole in
dac_nids[].  This confuses is_empty_dac() and trims the detected DAC
in later reference.

This patch fixes the bug by appending DAC properly to dac_nids[] in
via_auto_fill_adc_nids().

Reported-by: Massimo Del Fedele <max@veneto.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2012-11-07 10:32:47 +01:00
parent ae24c3191b
commit 5b3761954d
1 changed files with 4 additions and 7 deletions
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11
sound/pci/hda/patch_via.c
View File

@ -1809,11 +1809,11 @@ static int via_auto_fill_dac_nids(struct hda_codec *codec)
{
struct via_spec *spec = codec->spec;
const struct auto_pin_cfg *cfg = &spec->autocfg;
int i, dac_num;
int i;
hda_nid_t nid;
spec->multiout.num_dacs = 0;
spec->multiout.dac_nids = spec->private_dac_nids;
dac_num = 0;
for (i = 0; i < cfg->line_outs; i++) {
hda_nid_t dac = 0;
nid = cfg->line_out_pins[i];
@ -1824,16 +1824,13 @@ static int via_auto_fill_dac_nids(struct hda_codec *codec)
if (!i && parse_output_path(codec, nid, dac, 1,
&spec->out_mix_path))
dac = spec->out_mix_path.path[0];
if (dac) {
spec->private_dac_nids[i] = dac;
dac_num++;
}
if (dac)
spec->private_dac_nids[spec->multiout.num_dacs++] = dac;
}
if (!spec->out_path[0].depth && spec->out_mix_path.depth) {
spec->out_path[0] = spec->out_mix_path;
spec->out_mix_path.depth = 0;
}
spec->multiout.num_dacs = dac_num;
return 0;
}