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authorTakashi Sakamoto <o-takashi@sakamocchi.jp>2017-08-24 10:46:15 +0900
committerTakashi Iwai <tiwai@suse.de>2017-08-24 09:15:14 +0200
commitda4288287b68fe6902629f4e5306aba2a554bc4b (patch)
tree8f6e149b30f411ea5828cf4773c2b6b0aedfaeb8 /sound/core
parentfb8027ebfd4b8a3050edba66805bc360ed9b3f11 (diff)
downloadlinux-da4288287b68fe6902629f4e5306aba2a554bc4b.tar.bz2
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 <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/core')
-rw-r--r--sound/core/control.c7
1 files changed, 6 insertions, 1 deletions
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;
}