[PATCH 4/29] mtd: simplify use of devm_ioremap_resource

Julia Lawall
2013-08-14T09:11:08Z

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>

---
drivers/mtd/devices/elm.c | 5 -----
drivers/mtd/nand/txx9ndfmc.c | 4 +---
2 files changed, 1 insertion(+), 8 deletions(-)

diff --git a/drivers/mtd/devices/elm.c b/drivers/mtd/devices/elm.c
index 4f683d2..d1dd6a3 100644
--- a/drivers/mtd/devices/elm.c
+++ b/drivers/mtd/devices/elm.c
@@ -368,11 +368,6 @@ static int elm_probe(struct platform_device *pdev)
}

res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (!res) {
- dev_err(&pdev->dev, "no memory resource defined\n");
- return -ENODEV;
- }
-
info->elm_base = devm_ioremap_resource(&pdev->dev, res);
if (IS_ERR(info->elm_base))
return PTR_ERR(info->elm_base);
diff --git a/drivers/mtd/nand/txx9ndfmc.c b/drivers/mtd/nand/txx9ndfmc.c
index 440b570..235714a 100644
--- a/drivers/mtd/nand/txx9ndfmc.c
+++ b/drivers/mtd/nand/txx9ndfmc.c
@@ -281,12 +281,10 @@ static int __init txx9ndfmc_probe(struct platform_device *dev)
unsigned long gbusclk = plat->gbus_clock;
struct resource *res;

- res = platform_get_resource(dev, IORESOURCE_MEM, 0);
- if (!res)
- return -ENODEV;
drvdata = devm_kzalloc(&dev->dev, sizeof(*drvdata), GFP_KERNEL);
if (!drvdata)
return -ENOMEM;
+ res = platform_get_resource(dev, IORESOURCE_MEM, 0);
drvdata->base = devm_ioremap_resource(&dev->dev, res);
if (IS_ERR(drvdata->base))
return PTR_ERR(drvdata->base);