From 914da689090c094dd1ffce02b1fa13d7e9411ea0 Mon Sep 17 00:00:00 2001
From: Takashi Iwai <tiwai@suse.de>
Date: Tue, 10 Dec 2019 07:34:41 +0100
Subject: [PATCH] ALSA: gus: Support PCM sync_stop
Git-commit: 914da689090c094dd1ffce02b1fa13d7e9411ea0
Patch-mainline: v5.6-rc1
References: jsc#SLE-16518

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/20191210063454.31603-43-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>

---
 sound/isa/gus/gus_main.c  | 1 +
 sound/isa/gus/gusmax.c    | 3 ++-
 sound/isa/gus/interwave.c | 1 +
 3 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/sound/isa/gus/gus_main.c b/sound/isa/gus/gus_main.c
index af6b4d89d695..9f94b5f3b029 100644
--- a/sound/isa/gus/gus_main.c
+++ b/sound/isa/gus/gus_main.c
@@ -181,6 +181,7 @@ int snd_gus_create(struct snd_card *card,
 		return -EBUSY;
 	}
 	gus->gf1.irq = irq;
+	card->sync_irq = irq;
 	if (request_dma(dma1, "GUS - 1")) {
 		snd_printk(KERN_ERR "gus: can't grab DMA1 %d\n", dma1);
 		snd_gus_free(gus);
diff --git a/sound/isa/gus/gusmax.c b/sound/isa/gus/gusmax.c
index 53eca205f870..efe576625f48 100644
--- a/sound/isa/gus/gusmax.c
+++ b/sound/isa/gus/gusmax.c
@@ -282,7 +282,8 @@ static int snd_gusmax_probe(struct device *pdev, unsigned int dev)
 		goto _err;
 	}
 	maxcard->irq = xirq;
-	
+	card->sync_irq = maxcard->irq;
+
 	err = snd_wss_create(card,
 			     gus->gf1.port + 0x10c, -1, xirq,
 			     xdma2 < 0 ? xdma1 : xdma2, xdma1,
diff --git a/sound/isa/gus/interwave.c b/sound/isa/gus/interwave.c
index bc006dcf8de3..5cd4aa477ba7 100644
--- a/sound/isa/gus/interwave.c
+++ b/sound/isa/gus/interwave.c
@@ -667,6 +667,7 @@ static int snd_interwave_probe(struct snd_card *card, int dev)
 		return -EBUSY;
 	}
 	iwcard->irq = xirq;
+	card->sync_irq = iwcard->irq;
 
 	err = snd_wss_create(card,
 			     gus->gf1.port + 0x10c, -1, xirq,
-- 
2.16.4