提交 5d32d486 编写于 作者: J Julia Lawall 提交者: Wim Van Sebroeck

watchdog: imx2_wdt.c: use devm_request_and_ioremap

Reimplement a call to devm_request_mem_region followed by a call to ioremap
or ioremap_nocache by a call to devm_request_and_ioremap.

The variable res_size is then no longer needed.

The semantic patch that makes this transformation is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@nm@
expression myname;
identifier i;
@@

struct platform_driver i = { .driver = { .name = myname } };

@@
expression dev,res,size;
expression nm.myname;
@@

-if (!devm_request_mem_region(dev, res->start, size,
-                              \(res->name\|dev_name(dev)\|myname\))) {
-   ...
-   return ...;
-}
... when != res->start
(
-devm_ioremap(dev,res->start,size)
+devm_request_and_ioremap(dev,res)
|
-devm_ioremap_nocache(dev,res->start,size)
+devm_request_and_ioremap(dev,res)
)
... when any
    when != res->start
// </smpl>
Signed-off-by: NJulia Lawall <julia@diku.dk>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>
上级 74ea15d9
...@@ -247,7 +247,6 @@ static struct miscdevice imx2_wdt_miscdev = { ...@@ -247,7 +247,6 @@ static struct miscdevice imx2_wdt_miscdev = {
static int __init imx2_wdt_probe(struct platform_device *pdev) static int __init imx2_wdt_probe(struct platform_device *pdev)
{ {
int ret; int ret;
int res_size;
struct resource *res; struct resource *res;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0); res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
...@@ -256,15 +255,7 @@ static int __init imx2_wdt_probe(struct platform_device *pdev) ...@@ -256,15 +255,7 @@ static int __init imx2_wdt_probe(struct platform_device *pdev)
return -ENODEV; return -ENODEV;
} }
res_size = resource_size(res); imx2_wdt.base = devm_request_and_ioremap(&pdev->dev, res);
if (!devm_request_mem_region(&pdev->dev, res->start, res_size,
res->name)) {
dev_err(&pdev->dev, "can't allocate %d bytes at %d address\n",
res_size, res->start);
return -ENOMEM;
}
imx2_wdt.base = devm_ioremap_nocache(&pdev->dev, res->start, res_size);
if (!imx2_wdt.base) { if (!imx2_wdt.base) {
dev_err(&pdev->dev, "ioremap failed\n"); dev_err(&pdev->dev, "ioremap failed\n");
return -ENOMEM; return -ENOMEM;
......
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