Commit b2500b58 authored by Julian Scheel's avatar Julian Scheel Committed by Takashi Iwai

ALSA: usb-audio: uac1: Invalidate ctl on interrupt

When an interrupt occurs, the value of at least one of the belonging
controls should have changed. To make sure they get re-read from device
on the next read, invalidate the cache. This was correctly implemented
for uac2 already, but missing for uac1.
Signed-off-by: default avatarJulian Scheel <>
Signed-off-by: default avatarTakashi Iwai <>
parent 3aabf94c
......@@ -2330,9 +2330,14 @@ void snd_usb_mixer_notify_id(struct usb_mixer_interface *mixer, int unitid)
struct usb_mixer_elem_list *list;
for (list = mixer->id_elems[unitid]; list; list = list->next_id_elem)
for (list = mixer->id_elems[unitid]; list; list = list->next_id_elem) {
struct usb_mixer_elem_info *info =
(struct usb_mixer_elem_info *)list;
/* invalidate cache, so the value is read from the device */
info->cached = 0;
snd_ctl_notify(mixer->chip->card, SNDRV_CTL_EVENT_MASK_VALUE,
static void snd_usb_mixer_dump_cval(struct snd_info_buffer *buffer,
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