--- zzzz-none-000/linux-3.10.107/sound/soc/nuc900/nuc900-ac97.c	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/sound/soc/nuc900/nuc900-ac97.c	2021-02-04 17:41:59.000000000 +0000
@@ -28,6 +28,7 @@
 
 static DEFINE_MUTEX(ac97_mutex);
 struct nuc900_audio *nuc900_ac97_data;
+EXPORT_SYMBOL_GPL(nuc900_ac97_data);
 
 static int nuc900_checkready(void)
 {
@@ -197,13 +198,12 @@
 }
 
 /* AC97 controller operations */
-struct snd_ac97_bus_ops soc_ac97_ops = {
+static struct snd_ac97_bus_ops nuc900_ac97_ops = {
 	.read		= nuc900_ac97_read,
 	.write		= nuc900_ac97_write,
 	.reset		= nuc900_ac97_cold_reset,
 	.warm_reset	= nuc900_ac97_warm_reset,
-}
-EXPORT_SYMBOL_GPL(soc_ac97_ops);
+};
 
 static int nuc900_ac97_trigger(struct snd_pcm_substream *substream,
 				int cmd, struct snd_soc_dai *dai)
@@ -298,7 +298,7 @@
 static struct snd_soc_dai_driver nuc900_ac97_dai = {
 	.probe			= nuc900_ac97_probe,
 	.remove			= nuc900_ac97_remove,
-	.ac97_control		= 1,
+	.bus_control		= true,
 	.playback = {
 		.rates		= SNDRV_PCM_RATE_8000_48000,
 		.formats	= SNDRV_PCM_FMTBIT_S16_LE,
@@ -326,64 +326,49 @@
 	if (nuc900_ac97_data)
 		return -EBUSY;
 
-	nuc900_audio = kzalloc(sizeof(struct nuc900_audio), GFP_KERNEL);
+	nuc900_audio = devm_kzalloc(&pdev->dev, sizeof(struct nuc900_audio),
+				    GFP_KERNEL);
 	if (!nuc900_audio)
 		return -ENOMEM;
 
 	spin_lock_init(&nuc900_audio->lock);
 
 	nuc900_audio->res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	if (!nuc900_audio->res) {
-		ret = -ENODEV;
-		goto out0;
-	}
-
-	if (!request_mem_region(nuc900_audio->res->start,
-			resource_size(nuc900_audio->res), pdev->name)) {
-		ret = -EBUSY;
-		goto out0;
-	}
-
-	nuc900_audio->mmio = ioremap(nuc900_audio->res->start,
-					resource_size(nuc900_audio->res));
-	if (!nuc900_audio->mmio) {
-		ret = -ENOMEM;
-		goto out1;
-	}
+	nuc900_audio->mmio = devm_ioremap_resource(&pdev->dev,
+						   nuc900_audio->res);
+	if (IS_ERR(nuc900_audio->mmio))
+		return PTR_ERR(nuc900_audio->mmio);
 
-	nuc900_audio->clk = clk_get(&pdev->dev, NULL);
+	nuc900_audio->clk = devm_clk_get(&pdev->dev, NULL);
 	if (IS_ERR(nuc900_audio->clk)) {
 		ret = PTR_ERR(nuc900_audio->clk);
-		goto out2;
+		goto out;
 	}
 
 	nuc900_audio->irq_num = platform_get_irq(pdev, 0);
 	if (!nuc900_audio->irq_num) {
 		ret = -EBUSY;
-		goto out3;
+		goto out;
 	}
 
 	nuc900_ac97_data = nuc900_audio;
 
+	ret = snd_soc_set_ac97_ops(&nuc900_ac97_ops);
+	if (ret)
+		goto out;
+
 	ret = snd_soc_register_component(&pdev->dev, &nuc900_ac97_component,
 					 &nuc900_ac97_dai, 1);
 	if (ret)
-		goto out3;
+		goto out;
 
 	/* enbale ac97 multifunction pin */
 	mfp_set_groupg(nuc900_audio->dev, NULL);
 
 	return 0;
 
-out3:
-	clk_put(nuc900_audio->clk);
-out2:
-	iounmap(nuc900_audio->mmio);
-out1:
-	release_mem_region(nuc900_audio->res->start,
-					resource_size(nuc900_audio->res));
-out0:
-	kfree(nuc900_audio);
+out:
+	snd_soc_set_ac97_ops(NULL);
 	return ret;
 }
 
@@ -391,13 +376,8 @@
 {
 	snd_soc_unregister_component(&pdev->dev);
 
-	clk_put(nuc900_ac97_data->clk);
-	iounmap(nuc900_ac97_data->mmio);
-	release_mem_region(nuc900_ac97_data->res->start,
-				resource_size(nuc900_ac97_data->res));
-
-	kfree(nuc900_ac97_data);
 	nuc900_ac97_data = NULL;
+	snd_soc_set_ac97_ops(NULL);
 
 	return 0;
 }
@@ -405,7 +385,6 @@
 static struct platform_driver nuc900_ac97_driver = {
 	.driver	= {
 		.name	= "nuc900-ac97",
-		.owner	= THIS_MODULE,
 	},
 	.probe		= nuc900_ac97_drvprobe,
 	.remove		= nuc900_ac97_drvremove,