watchdog: at32ap700x_wdt: use devm_*() functions
Use devm_*() functions to make cleanup paths simpler.
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Acked-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
diff --git a/drivers/watchdog/at32ap700x_wdt.c b/drivers/watchdog/at32ap700x_wdt.c
index 7a715e3..c4cb552 100644
--- a/drivers/watchdog/at32ap700x_wdt.c
+++ b/drivers/watchdog/at32ap700x_wdt.c
@@ -321,13 +321,14 @@
return -ENXIO;
}
- wdt = kzalloc(sizeof(struct wdt_at32ap700x), GFP_KERNEL);
+ wdt = devm_kzalloc(&pdev->dev, sizeof(struct wdt_at32ap700x),
+ GFP_KERNEL);
if (!wdt) {
dev_dbg(&pdev->dev, "no memory for wdt structure\n");
return -ENOMEM;
}
- wdt->regs = ioremap(regs->start, resource_size(regs));
+ wdt->regs = devm_ioremap(&pdev->dev, regs->start, resource_size(regs));
if (!wdt->regs) {
ret = -ENOMEM;
dev_dbg(&pdev->dev, "could not map I/O memory\n");
@@ -342,7 +343,7 @@
dev_info(&pdev->dev, "CPU must be reset with external "
"reset or POR due to silicon errata.\n");
ret = -EIO;
- goto err_iounmap;
+ goto err_free;
} else {
wdt->users = 0;
}
@@ -375,10 +376,7 @@
err_register:
platform_set_drvdata(pdev, NULL);
-err_iounmap:
- iounmap(wdt->regs);
err_free:
- kfree(wdt);
wdt = NULL;
return ret;
}
@@ -391,8 +389,6 @@
at32_wdt_stop();
misc_deregister(&wdt->miscdev);
- iounmap(wdt->regs);
- kfree(wdt);
wdt = NULL;
platform_set_drvdata(pdev, NULL);
}
