On Wed, 07 Apr 2021 09:54:28 +0200, Jonas Holmberg wrote:

Add a control to the card before copying the id so that the numid field is initialized in the copy. Otherwise the numid field of active_id, format_id, rate_id and channels_id will be the same (0) and snd_ctl_notify() will not queue the events properly.

Signed-off-by: Jonas Holmberg jonashg@axis.com

Applied now (with Cc to stable).

thanks,

Takashi

---

sound/drivers/aloop.c | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/sound/drivers/aloop.c b/sound/drivers/aloop.c index 52637180af33..80b814b9922a 100644 --- a/sound/drivers/aloop.c +++ b/sound/drivers/aloop.c @@ -1571,6 +1571,14 @@ static int loopback_mixer_new(struct loopback *loopback, int notify) return -ENOMEM; kctl->id.device = dev; kctl->id.subdevice = substr;

• 		/* Add the control before copying the id so that
  

• 		 * the numid field of the id is set in the copy.
  

• 		 */
  

• 		err = snd_ctl_add(card, kctl);
  

• 		if (err < 0)
  

• 			return err;
  

• 	switch (idx) {
  	case ACTIVE_IDX:
  		setup->active_id = kctl->id;
  

@@ -1587,9 +1595,6 @@ static int loopback_mixer_new(struct loopback *loopback, int notify) default: break; }

• 		err = snd_ctl_add(card, kctl);
  

• 		if (err < 0)
  

• 			return err;
  }
  

  } }

-- 2.26.3