drivers/ata/sata_rcar.c: 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.

Move the call to platform_get_resource adjacent to the call to
devm_ioremap_resource to make the connection between them more clear.

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

// <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: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Tejun Heo <tj@kernel.org>

diff --git a/drivers/ata/sata_rcar.c b/drivers/ata/sata_rcar.c
index 8108eb0654448f8eba16da40e4aace400ff8087a..c2d95e9fb971e611135ee19f81b3531eb36a597b 100644 (file)
--- a/drivers/ata/sata_rcar.c
+++ b/drivers/ata/sata_rcar.c
@@ -778,10 +778,6 @@ static int sata_rcar_probe(struct platform_device *pdev)
        int irq;
        int ret = 0;
 
-       mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-       if (mem == NULL)
-               return -EINVAL;
-
        irq = platform_get_irq(pdev, 0);
        if (irq <= 0)
                return -EINVAL;
@@ -807,6 +803,7 @@ static int sata_rcar_probe(struct platform_device *pdev)
 
        host->private_data = priv;
 
+       mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
        priv->base = devm_ioremap_resource(&pdev->dev, mem);
        if (IS_ERR(priv->base)) {
                ret = PTR_ERR(priv->base);