ALSA: es1938: Support PCM sync_stop (6b276e62) · Commits · 戴 / test

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/20191210063454.31603-19-tiwai@suse.de Signed-off-by:

Takashi Iwai <tiwai@suse.de>

sound/pci/es1938.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -1444,6 +1444,7 @@ static int es1938_suspend(struct device *dev)
		if (chip->irq >= 0) {
		free_irq(chip->irq, chip);
		chip->irq = -1;
		card->sync_irq = -1;
		}
		return 0;
		}
		@@ -1463,6 +1464,7 @@ static int es1938_resume(struct device *dev)
		return -EIO;
		}
		chip->irq = pci->irq;
		card->sync_irq = chip->irq;
		snd_es1938_chip_init(chip);

		/* restore mixer-related registers */
		@@ -1591,6 +1593,7 @@ static int snd_es1938_create(struct snd_card *card,
		return -EBUSY;
		}
		chip->irq = pci->irq;
		card->sync_irq = chip->irq;
		dev_dbg(card->dev,
		"create: io: 0x%lx, sb: 0x%lx, vc: 0x%lx, mpu: 0x%lx, game: 0x%lx\n",
		chip->io_port, chip->sb_port, chip->vc_port, chip->mpu_port, chip->game_port);

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