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| author | Takashi Iwai <tiwai@suse.de> | 2011-08-19 08:30:53 +0200 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2011-08-19 08:30:53 +0200 |
| commit | 9fcd0ab130579d9742538340edda3225f2b49a3e (patch) | |
| tree | bdf6c648c51c172d16cd5ce575b19b3443859c9b /sound | |
| parent | Merge branch 'fix/misc' into topic/misc (diff) | |
| download | linux-9fcd0ab130579d9742538340edda3225f2b49a3e.tar.xz linux-9fcd0ab130579d9742538340edda3225f2b49a3e.zip | |
ALSA: usb-audio - Check the dB-range validity in the later read, too
When the initial check of dB-range failed due to the read error, try to
check again at the later read, too. When an invalid dB range is found,
remove TLV flags and notify the mixer info change.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound')
| -rw-r--r-- | sound/usb/mixer.c | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/sound/usb/mixer.c b/sound/usb/mixer.c index cdd19d7fe500..78a5abda6793 100644 --- a/sound/usb/mixer.c +++ b/sound/usb/mixer.c @@ -881,8 +881,17 @@ static int mixer_ctl_feature_info(struct snd_kcontrol *kcontrol, struct snd_ctl_ uinfo->value.integer.min = 0; uinfo->value.integer.max = 1; } else { - if (! cval->initialized) - get_min_max(cval, 0); + if (!cval->initialized) { + get_min_max(cval, 0); + if (cval->initialized && cval->dBmin >= cval->dBmax) { + kcontrol->vd[0].access &= + ~(SNDRV_CTL_ELEM_ACCESS_TLV_READ | + SNDRV_CTL_ELEM_ACCESS_TLV_CALLBACK); + snd_ctl_notify(cval->mixer->chip->card, + SNDRV_CTL_EVENT_MASK_INFO, + &kcontrol->id); + } + } uinfo->value.integer.min = 0; uinfo->value.integer.max = (cval->max - cval->min + cval->res - 1) / cval->res; |