[PATCH 2/4] ALSA: gusclassic: add ISA suspend and resume callbacks

[Cássio Gabriel]

gusclassic still leaves its ISA PM callbacks disabled because the shared
GF1 core had no suspend and resume path suitable for PM recovery.

Wire the driver up to the new shared GUS suspend and resume helpers so a
suspend/resume cycle restores usable GF1 operation without rerunning
probe-only detection or tearing down the runtime bookkeeping kept by the
card instance.

Signed-off-by: Cássio Gabriel <cassiogabrielcontato@xxxxxxxxx>
---
 sound/isa/gus/gusclassic.c | 21 ++++++++++++++++++++-
 1 file changed, 20 insertions(+), 1 deletion(-)

diff --git a/sound/isa/gus/gusclassic.c b/sound/isa/gus/gusclassic.c
index 101202acefb3..363c819ced89 100644
--- a/sound/isa/gus/gusclassic.c
+++ b/sound/isa/gus/gusclassic.c
@@ -145,6 +145,7 @@ static int snd_gusclassic_probe(struct device *dev, unsigned int n)
 	error = snd_gusclassic_create(card, dev, n, &gus);
 	if (error < 0)
 		return error;
+	card->private_data = gus;
 
 	error = snd_gusclassic_detect(gus);
 	if (error < 0)
@@ -193,11 +194,29 @@ static int snd_gusclassic_probe(struct device *dev, unsigned int n)
 	return 0;
 }
 
+#ifdef CONFIG_PM
+static int snd_gusclassic_suspend(struct device *dev, unsigned int n,
+				  pm_message_t state)
+{
+	struct snd_card *card = dev_get_drvdata(dev);
+
+	return snd_gus_suspend(card->private_data);
+}
+
+static int snd_gusclassic_resume(struct device *dev, unsigned int n)
+{
+	struct snd_card *card = dev_get_drvdata(dev);
+
+	return snd_gus_resume(card->private_data);
+}
+#endif
+
 static struct isa_driver snd_gusclassic_driver = {
 	.match		= snd_gusclassic_match,
 	.probe		= snd_gusclassic_probe,
-#if 0	/* FIXME */
+#ifdef CONFIG_PM
 	.suspend	= snd_gusclassic_suspend,
+	.resume		= snd_gusclassic_resume,
 #endif
 	.driver		= {
 		.name	= DEV_NAME

-- 
2.53.0