commit ea2eab50a0e1a868a87b407f51a6b45b9062ee08
author Takashi Iwai <tiwai@suse.de> Tue Dec 10 07:34:02 2019 +0100
committer Takashi Iwai <tiwai@suse.de> Wed Dec 11 07:25:38 2019 +0100
tree 78241b3a7db6af370d679b39814470dcfccb9837
parent 5110bc701b4aa839f461aa5a1a6259bf91b07036

ALSA: als300: Support PCM sync_stop

The driver invokes snd_pcm_period_elapsed() simply from the interrupt
handler.  Set card->sync_irq for enabling the missing sync_stop PCM
operation.

Link: https://lore.kernel.org/r/20191210063454.31603-4-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/pci/als300.c

diff --git a/sound/pci/als300.c b/sound/pci/als300.c
index 0fb84d1..6573a22 100644
--- a/sound/pci/als300.c
+++ b/sound/pci/als300.c
@@ -664,7 +664,7 @@ static int snd_als300_create(struct snd_card *card,
 		return -EBUSY;
 	}
 	chip->irq = pci->irq;
-
+	card->sync_irq = chip->irq;
 
 	snd_als300_init(chip);