ALSA: usb-audio: uac1: Invalidate ctl on interrupt (b2500b58) · Commits · 戴 / test

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:

Julian Scheel <julian@jusst.de> Signed-off-by:

Takashi Iwai <tiwai@suse.de>

sound/usb/mixer.c

+6 −1

Original line number	Diff line number	Diff line
		@@ -2330,10 +2330,15 @@ 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,
		&list->kctl->id);
		}
		}

		static void snd_usb_mixer_dump_cval(struct snd_info_buffer *buffer,
		struct usb_mixer_elem_list *list)

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