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Commit 9fcd0ab1 authored by Takashi Iwai's avatar Takashi Iwai
Browse files

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: default avatarTakashi Iwai <tiwai@suse.de>
parent b55ac2a1

sound/usb/mixer.c

+11 −2
Original line number Diff line number Diff line
@@ -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)

		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;