diff options
| -rw-r--r-- | drivers/watchdog/davinci_wdt.c | 26 |
1 files changed, 5 insertions, 21 deletions
diff --git a/drivers/watchdog/davinci_wdt.c b/drivers/watchdog/davinci_wdt.c index c3c2f8205ef..7df1fdca9e7 100644 --- a/drivers/watchdog/davinci_wdt.c +++ b/drivers/watchdog/davinci_wdt.c @@ -69,7 +69,6 @@ static unsigned long wdt_status; #define WDT_REGION_INITED 2 #define WDT_DEVICE_INITED 3 -static struct resource *wdt_mem; static void __iomem *wdt_base; struct clk *wdt_clk; @@ -201,8 +200,9 @@ static struct miscdevice davinci_wdt_miscdev = { static int davinci_wdt_probe(struct platform_device *pdev) { - int ret = 0, size; + int ret = 0; struct device *dev = &pdev->dev; + struct resource *wdt_mem; wdt_clk = devm_clk_get(dev, NULL); if (WARN_ON(IS_ERR(wdt_clk))) @@ -221,41 +221,25 @@ static int davinci_wdt_probe(struct platform_device *pdev) return -ENOENT; } - size = resource_size(wdt_mem); - if (!request_mem_region(wdt_mem->start, size, pdev->name)) { - dev_err(dev, "failed to get memory region\n"); - return -ENOENT; - } - - wdt_base = ioremap(wdt_mem->start, size); + wdt_base = devm_request_and_ioremap(dev, wdt_mem); if (!wdt_base) { - dev_err(dev, "failed to map memory region\n"); - release_mem_region(wdt_mem->start, size); - wdt_mem = NULL; - return -ENOMEM; + dev_err(dev, "ioremap failed\n"); + return -EADDRNOTAVAIL; } ret = misc_register(&davinci_wdt_miscdev); if (ret < 0) { dev_err(dev, "cannot register misc device\n"); - release_mem_region(wdt_mem->start, size); - wdt_mem = NULL; } else { set_bit(WDT_DEVICE_INITED, &wdt_status); } - iounmap(wdt_base); return ret; } static int davinci_wdt_remove(struct platform_device *pdev) { misc_deregister(&davinci_wdt_miscdev); - if (wdt_mem) { - release_mem_region(wdt_mem->start, resource_size(wdt_mem)); - wdt_mem = NULL; - } - clk_disable_unprepare(wdt_clk); return 0; |