From da4288287b68fe6902629f4e5306aba2a554bc4b Mon Sep 17 00:00:00 2001 From: Takashi Sakamoto Date: Thu, 24 Aug 2017 10:46:15 +0900 Subject: [PATCH] ALSA: control: queue TLV event for a set of user-defined element In a design of user-defined element set, applications allow to change TLV data on the set. This operation doesn't only affects to a target element, but also to elements in the set. This commit generates TLV event for all of elements in the set when the TLV data is changed. Signed-off-by: Takashi Sakamoto Signed-off-by: Takashi Iwai --- sound/core/control.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/sound/core/control.c b/sound/core/control.c index d6a8502da828..6ddffe85126f 100644 --- a/sound/core/control.c +++ b/sound/core/control.c @@ -1117,6 +1117,8 @@ static int replace_user_tlv(struct snd_kcontrol *kctl, unsigned int __user *buf, { struct user_element *ue = kctl->private_data; unsigned int *container; + struct snd_ctl_elem_id id; + int i; int change; if (size > 1024 * 128) /* sane value */ @@ -1138,7 +1140,10 @@ static int replace_user_tlv(struct snd_kcontrol *kctl, unsigned int __user *buf, ue->tlv_data = container; ue->tlv_data_size = size; - snd_ctl_notify(ue->card, SNDRV_CTL_EVENT_MASK_TLV, &kctl->id); + for (i = 0; i < kctl->count; ++i) { + snd_ctl_build_ioff(&id, kctl, i); + snd_ctl_notify(ue->card, SNDRV_CTL_EVENT_MASK_TLV, &id); + } return change; } -- 2.20.1