ALSA: bt87x: 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, as well as removing the superfluous synchronize_irq()
call.

Link: https://lore.kernel.org/r/20191210063454.31603-9-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>

diff --git a/sound/pci/bt87x.c b/sound/pci/bt87x.c
index de4af1a..2e16604 100644 (file)
--- a/sound/pci/bt87x.c
+++ b/sound/pci/bt87x.c
@@ -751,8 +751,8 @@ static int snd_bt87x_create(struct snd_card *card,
                goto fail;
        }
        chip->irq = pci->irq;
+       card->sync_irq = chip->irq;
        pci_set_master(pci);
-       synchronize_irq(chip->irq);
 
        err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops);
        if (err < 0)