diff options
| author | Takashi Iwai <tiwai@suse.de> | 2012-02-22 12:34:08 +0100 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2012-02-22 12:36:06 +0100 |
| commit | 77e314f72241daeac575158f946e905191611f0e (patch) | |
| tree | 3e963e398eddfd2bfe73b2fc618d505ac6d59027 /sound/pci/hda | |
| parent | 8d8bbc6f17b2a28c58de804064dbdab036d4318e (diff) | |
ALSA: hda/via - Add a few sanity checks
Added sanity checks in a few places not to assume the pins having the
certain amp caps or the input-source being always assigned to a mux.
No actual bugs have been triggered by these, but surely better to be a
bit more robust.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/pci/hda')
| -rw-r--r-- | sound/pci/hda/patch_via.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/sound/pci/hda/patch_via.c b/sound/pci/hda/patch_via.c index 93d52fc605f..06214fdc948 100644 --- a/sound/pci/hda/patch_via.c +++ b/sound/pci/hda/patch_via.c @@ -550,7 +550,10 @@ static void via_auto_init_output(struct hda_codec *codec, pin = path->path[path->depth - 1]; init_output_pin(codec, pin, pin_type); - caps = query_amp_caps(codec, pin, HDA_OUTPUT); + if (get_wcaps(codec, pin) & AC_WCAP_OUT_AMP) + caps = query_amp_caps(codec, pin, HDA_OUTPUT); + else + caps = 0; if (caps & AC_AMPCAP_MUTE) { unsigned int val; val = (caps & AC_AMPCAP_OFFSET) >> AC_AMPCAP_OFFSET_SHIFT; @@ -645,6 +648,10 @@ static void via_auto_init_analog_input(struct hda_codec *codec) /* init ADCs */ for (i = 0; i < spec->num_adc_nids; i++) { + hda_nid_t nid = spec->adc_nids[i]; + if (!(get_wcaps(codec, nid) & AC_WCAP_IN_AMP) || + !(query_amp_caps(codec, nid, HDA_INPUT) & AC_AMPCAP_MUTE)) + continue; snd_hda_codec_write(codec, spec->adc_nids[i], 0, AC_VERB_SET_AMP_GAIN_MUTE, AMP_IN_UNMUTE(0)); @@ -1508,6 +1515,8 @@ static int via_build_controls(struct hda_codec *codec) /* assign Capture Source enums to NID */ kctl = snd_hda_find_mixer_ctl(codec, "Input Source"); for (i = 0; kctl && i < kctl->count; i++) { + if (!spec->mux_nids[i]) + continue; err = snd_hda_add_nid(codec, kctl, i, spec->mux_nids[i]); if (err < 0) return err; |