From: Takashi Iwai <tiwai@suse.de>
Date: Tue, 10 Dec 2019 06:34:27 +0000 (+0100)
Subject: ALSA: nm256: Support PCM sync_stop
X-Git-Tag: v5.15~4528^2~228
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=1478eb63654b367399f79edc0734a3bda1b0324b;p=platform%2Fkernel%2Flinux-starfive.git

ALSA: nm256: 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.  It's cleared and reset dynamically at IRQ re-acquiring for
the PM resume, too.

Link: https://lore.kernel.org/r/20191210063454.31603-29-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
---

diff --git a/sound/pci/nm256/nm256.c b/sound/pci/nm256/nm256.c
index 02767f3..ac19448 100644
--- a/sound/pci/nm256/nm256.c
+++ b/sound/pci/nm256/nm256.c
@@ -460,6 +460,7 @@ static int snd_nm256_acquire_irq(struct nm256 *chip)
 			return -EBUSY;
 		}
 		chip->irq = chip->pci->irq;
+		chip->card->sync_irq = chip->irq;
 	}
 	chip->irq_acks++;
 	mutex_unlock(&chip->irq_mutex);
@@ -475,6 +476,7 @@ static void snd_nm256_release_irq(struct nm256 *chip)
 	if (chip->irq_acks == 0 && chip->irq >= 0) {
 		free_irq(chip->irq, chip);
 		chip->irq = -1;
+		chip->card->sync_irq = -1;
 	}
 	mutex_unlock(&chip->irq_mutex);
 }