ALSA: ad1816a: 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/20191210063454.31603-40-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>

diff --git a/sound/isa/ad1816a/ad1816a_lib.c b/sound/isa/ad1816a/ad1816a_lib.c
index b9d340c752b4e17d6bc3b0d7e665d111515651f5..e1aa5372c4830a75a83818a1e7a2e1b5f9f500a7 100644 (file)
--- a/sound/isa/ad1816a/ad1816a_lib.c
+++ b/sound/isa/ad1816a/ad1816a_lib.c
@@ -597,6 +597,7 @@ int snd_ad1816a_create(struct snd_card *card,
                return -EBUSY;
        }
        chip->irq = irq;
+       card->sync_irq = chip->irq;
        if (request_dma(dma1, "AD1816A - 1")) {
                snd_printk(KERN_ERR "ad1816a: can't grab DMA1 %d\n", dma1);
                snd_ad1816a_free(chip);