ASoC: jz4740-codec: Use devm_request_and_ioremap

Use devm_request_and_ioremap for requesting and mapping the IO region. This
makes the code a bit smaller and simpler.
Signed-off-by: NLars-Peter Clausen <lars@metafoo.de>
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>

sound/soc/codecs/jz4740.c

@@ -74,7 +74,6 @@ static const uint32_t jz4740_codec_regs[] = {
 
 struct jz4740_codec {
 	void __iomem *base;
-	struct resource *mem;
 };
 
 static unsigned int jz4740_codec_read(struct snd_soc_codec *codec,
@@ -371,56 +370,24 @@ static int __devinit jz4740_codec_probe(struct platform_device *pdev)
 		return -ENOMEM;
 
 	mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	if (!mem) {
-		dev_err(&pdev->dev, "Failed to get mmio memory resource\n");
-		ret = -ENOENT;
-		goto err_out;
-	}
-
-	mem = request_mem_region(mem->start, resource_size(mem), pdev->name);
-	if (!mem) {
-		dev_err(&pdev->dev, "Failed to request mmio memory region\n");
-		ret = -EBUSY;
-		goto err_out;
-	}
-
-	jz4740_codec->base = ioremap(mem->start, resource_size(mem));
-	if (!jz4740_codec->base) {
-		dev_err(&pdev->dev, "Failed to ioremap mmio memory\n");
-		ret = -EBUSY;
-		goto err_release_mem_region;
-	}
-	jz4740_codec->mem = mem;
+	jz4740_codec->base = devm_request_and_ioremap(&pdev->dev, mem);
+	if (!jz4740_codec->base)
+		return -EBUSY;
 
 	platform_set_drvdata(pdev, jz4740_codec);
 
 	ret = snd_soc_register_codec(&pdev->dev,
 			&soc_codec_dev_jz4740_codec, &jz4740_codec_dai, 1);
-	if (ret) {
+	if (ret)
 		dev_err(&pdev->dev, "Failed to register codec\n");
-		goto err_iounmap;
-	}
-
-	return 0;
 
-err_iounmap:
-	iounmap(jz4740_codec->base);
-err_release_mem_region:
-	release_mem_region(mem->start, resource_size(mem));
-err_out:
 	return ret;
 }
 
 static int __devexit jz4740_codec_remove(struct platform_device *pdev)
 {
-	struct jz4740_codec *jz4740_codec = platform_get_drvdata(pdev);
-	struct resource *mem = jz4740_codec->mem;
-
 	snd_soc_unregister_codec(&pdev->dev);
 
-	iounmap(jz4740_codec->base);
-	release_mem_region(mem->start, resource_size(mem));
-
 	platform_set_drvdata(pdev, NULL);
 
 	return 0;