From: Julia Lawall <Julia.Lawall@lip6.fr>
Date: Mon, 19 Aug 2013 08:51:51 +0000 (+0200)
Subject: ASoC: omap: simplify platform_get_resource_byname/devm_ioremap_resource
X-Git-Tag: accepted/tizen/common/20141203.182822~1038^2~176^2~31^2
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=673c24e957db4be85a12e4260ace12dea805fa97;p=platform%2Fkernel%2Flinux-arm64.git

ASoC: omap: simplify platform_get_resource_byname/devm_ioremap_resource

Remove unneeded error handling on the result of a call to
platform_get_resource_byname when the value is passed to devm_ioremap_resource.

In the case of omap-dmic.c, the error-handling code of
devm_ioremap_resource is also corrected to include releasing the clock.

A simplified version of the semantic patch that makes this change is as
follows: (http://coccinelle.lip6.fr/)

// <smpl>
@@
expression pdev,res,e,e1;
expression ret != 0;
identifier l;
@@

  res = platform_get_resource_byname(...);
- if (res == NULL) { ... \(goto l;\|return ret;\) }
  e = devm_ioremap_resource(e1, res);
// </smpl>

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Acked-by: Jarkko Nikula <jarkko.nikula@bitmer.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
---

diff --git a/sound/soc/omap/omap-dmic.c b/sound/soc/omap/omap-dmic.c
index 4db1f8e..12e566b 100644
--- a/sound/soc/omap/omap-dmic.c
+++ b/sound/soc/omap/omap-dmic.c
@@ -480,15 +480,12 @@ static int asoc_dmic_probe(struct platform_device *pdev)
 	dmic->dma_data.filter_data = "up_link";
 
 	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "mpu");
-	if (!res) {
-		dev_err(dmic->dev, "invalid memory resource\n");
-		ret = -ENODEV;
+	dmic->io_base = devm_ioremap_resource(&pdev->dev, res);
+	if (IS_ERR(dmic->io_base)) {
+		ret = PTR_ERR(dmic->io_base);
 		goto err_put_clk;
 	}
 
-	dmic->io_base = devm_ioremap_resource(&pdev->dev, res);
-	if (IS_ERR(dmic->io_base))
-		return PTR_ERR(dmic->io_base);
 
 	ret = snd_soc_register_component(&pdev->dev, &omap_dmic_component,
 					 &omap_dmic_dai, 1);
diff --git a/sound/soc/omap/omap-mcpdm.c b/sound/soc/omap/omap-mcpdm.c
index a49dc52..90d2a7c 100644
--- a/sound/soc/omap/omap-mcpdm.c
+++ b/sound/soc/omap/omap-mcpdm.c
@@ -480,9 +480,6 @@ static int asoc_mcpdm_probe(struct platform_device *pdev)
 	mcpdm->dma_data[1].filter_data = "up_link";
 
 	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "mpu");
-	if (res == NULL)
-		return -ENOMEM;
-
 	mcpdm->io_base = devm_ioremap_resource(&pdev->dev, res);
 	if (IS_ERR(mcpdm->io_base))
 		return PTR_ERR(mcpdm->io_base);