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| author | Takashi Sakamoto <o-takashi@sakamocchi.jp> | 2017-08-24 04:46:15 +0300 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2017-08-24 10:15:14 +0300 |
| commit | da4288287b68fe6902629f4e5306aba2a554bc4b (patch) | |
| tree | 8f6e149b30f411ea5828cf4773c2b6b0aedfaeb8 /sound/core/control.c | |
| parent | fb8027ebfd4b8a3050edba66805bc360ed9b3f11 (diff) | |
| download | linux-da4288287b68fe6902629f4e5306aba2a554bc4b.tar.xz | |
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/control.c')
| -rw-r--r-- | sound/core/control.c | 7 |
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; } |