watchdog: omap_wdt: Use devm_ioremap_resource()
Use devm_ioremap_resource() in order to make the code simpler,
and remove 'struct resource *mem' from 'struct omap_wdt_dev'
and omap_wdt_probe(), resplectively. because the 'mem' variables
are not used anymore. Also the redundant return value check of
platform_get_resource() is removed, because the value is checked
by devm_ioremap_resource().
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Acked-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
diff --git a/drivers/watchdog/omap_wdt.c b/drivers/watchdog/omap_wdt.c
index fbcb6f6..3691b15 100644
--- a/drivers/watchdog/omap_wdt.c
+++ b/drivers/watchdog/omap_wdt.c
@@ -57,7 +57,6 @@
void __iomem *base; /* physical */
struct device *dev;
bool omap_wdt_users;
- struct resource *mem;
int wdt_trgr_pattern;
struct mutex lock; /* to avoid races with PM */
};
@@ -206,7 +205,7 @@
{
struct omap_wd_timer_platform_data *pdata = dev_get_platdata(&pdev->dev);
struct watchdog_device *omap_wdt;
- struct resource *res, *mem;
+ struct resource *res;
struct omap_wdt_dev *wdev;
u32 rs;
int ret;
@@ -215,29 +214,20 @@
if (!omap_wdt)
return -ENOMEM;
- /* reserve static register mappings */
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (!res)
- return -ENOENT;
-
- mem = devm_request_mem_region(&pdev->dev, res->start,
- resource_size(res), pdev->name);
- if (!mem)
- return -EBUSY;
-
wdev = devm_kzalloc(&pdev->dev, sizeof(*wdev), GFP_KERNEL);
if (!wdev)
return -ENOMEM;
wdev->omap_wdt_users = false;
- wdev->mem = mem;
wdev->dev = &pdev->dev;
wdev->wdt_trgr_pattern = 0x1234;
mutex_init(&wdev->lock);
- wdev->base = devm_ioremap(&pdev->dev, res->start, resource_size(res));
- if (!wdev->base)
- return -ENOMEM;
+ /* reserve static register mappings */
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ wdev->base = devm_ioremap_resource(&pdev->dev, res);
+ if (IS_ERR(wdev->base))
+ return PTR_ERR(wdev->base);
omap_wdt->info = &omap_wdt_info;
omap_wdt->ops = &omap_wdt_ops;