linux-kernel - [PATCH] ASOC: Atmel: ClassD: Simplify use of devm_ioremap

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Message-ID: <20160704130352.GA16886@amitoj-Inspiron-3542>
Date:	Mon, 4 Jul 2016 18:33:52 +0530
From:	Amitoj Kaur Chawla <amitoj1606@...il.com>
To:	nicolas.ferre@...el.com, lgirdwood@...il.com, broonie@...nel.org,
	perex@...ex.cz, tiwai@...e.com, alsa-devel@...a-project.org,
	linux-kernel@...r.kernel.org
Cc:	julia.lawall@...6.fr
Subject: [PATCH] ASOC: Atmel: ClassD: Simplify use of devm_ioremap_resource

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

The Coccinelle semantic patch that makes this change is as follows:

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

- res = platform_get_resource(pdev, IORESOURCE_MEM, n);
  ... when != res
- if (res == NULL) { ... \(goto l;\|return ret;\) }
  ... when != res
+ res = platform_get_resource(pdev, IORESOURCE_MEM, n);
  e = devm_ioremap_resource(e1, res);
// </smpl>

Signed-off-by: Amitoj Kaur Chawla <amitoj1606@...il.com>
---
 sound/soc/atmel/atmel-classd.c | 5 -----
 1 file changed, 5 deletions(-)

diff --git a/sound/soc/atmel/atmel-classd.c b/sound/soc/atmel/atmel-classd.c
index 6107de9..6d9b8b4 100644
--- a/sound/soc/atmel/atmel-classd.c
+++ b/sound/soc/atmel/atmel-classd.c
@@ -593,11 +593,6 @@ static int atmel_classd_probe(struct platform_device *pdev)
 	}
 
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	if (!res) {
-		dev_err(dev, "no memory resource\n");
-		return -ENXIO;
-	}
-
 	io_base = devm_ioremap_resource(dev, res);
 	if (IS_ERR(io_base)) {
 		ret =  PTR_ERR(io_base);
-- 
1.9.1