ALSA: nm256: Support PCM sync_stop (1478eb63) · 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/20191210063454.31603-29-tiwai@suse.de Signed-off-by:

Takashi Iwai <tiwai@suse.de>

sound/pci/nm256/nm256.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -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);
		}

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