ALSA: intel8x0: 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/20191210063454.31603-25-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>

diff --git a/sound/pci/intel8x0.c b/sound/pci/intel8x0.c
index 2a3551deee746c219c542a3e4cdd78f49238032d..f88008465c44b2b0eea8ca566c7aaa73a892b0fb 100644 (file)
--- a/sound/pci/intel8x0.c
+++ b/sound/pci/intel8x0.c
@@ -2592,6 +2592,7 @@ static int intel8x0_suspend(struct device *dev)
        if (chip->irq >= 0) {
                free_irq(chip->irq, chip);
                chip->irq = -1;
+               card->sync_irq = -1;
        }
        return 0;
 }
@@ -2612,7 +2613,7 @@ static int intel8x0_resume(struct device *dev)
                return -EIO;
        }
        chip->irq = pci->irq;
-       synchronize_irq(chip->irq);
+       card->sync_irq = chip->irq;
 
        /* re-initialize mixer stuff */
        if (chip->device_type == DEVICE_INTEL_ICH4 && !spdif_aclink) {
@@ -3092,6 +3093,7 @@ static int snd_intel8x0_create(struct snd_card *card,
                return -EBUSY;
        }
        chip->irq = pci->irq;
+       card->sync_irq = chip->irq;
 
        if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
                snd_intel8x0_free(chip);

diff --git a/sound/pci/intel8x0m.c b/sound/pci/intel8x0m.c
index 13dd3d873e95a5673094bb9fd97deaf3872ada4c..2f73b45c845c833cf4d9bb24d2d7a0500cb01beb 100644 (file)
--- a/sound/pci/intel8x0m.c
+++ b/sound/pci/intel8x0m.c
@@ -999,6 +999,7 @@ static int intel8x0m_suspend(struct device *dev)
        if (chip->irq >= 0) {
                free_irq(chip->irq, chip);
                chip->irq = -1;
+               card->sync_irq = -1;
        }
        return 0;
 }
@@ -1017,6 +1018,7 @@ static int intel8x0m_resume(struct device *dev)
                return -EIO;
        }
        chip->irq = pci->irq;
+       card->sync_irq = chip->irq;
        snd_intel8x0m_chip_init(chip, 0);
        snd_ac97_resume(chip->ac97);
 
@@ -1191,6 +1193,7 @@ static int snd_intel8x0m_create(struct snd_card *card,
                return -EBUSY;
        }
        chip->irq = pci->irq;
+       card->sync_irq = chip->irq;
 
        if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
                snd_intel8x0m_free(chip);