rtc: brcmstb-waketimer: switch to rtc_register_device

Switch to devm_rtc_allocate_device/rtc_register_device.
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>

drivers/rtc/rtc-brcmstb-waketimer.c

@@ -229,6 +229,10 @@ static int brcmstb_waketmr_probe(struct platform_device *pdev)
 	if (IS_ERR(timer->base))
 		return PTR_ERR(timer->base);
 
+	timer->rtc = devm_rtc_allocate_device(dev);
+	if (IS_ERR(timer->rtc))
+		return PTR_ERR(timer->rtc);
+
 	/*
 	 * Set wakeup capability before requesting wakeup interrupt, so we can
 	 * process boot-time "wakeups" (e.g., from S5 soft-off)
@@ -261,11 +265,11 @@ static int brcmstb_waketmr_probe(struct platform_device *pdev)
 	timer->reboot_notifier.notifier_call = brcmstb_waketmr_reboot;
 	register_reboot_notifier(&timer->reboot_notifier);
 
-	timer->rtc = rtc_device_register("brcmstb-waketmr", dev,
-					 &brcmstb_waketmr_ops, THIS_MODULE);
-	if (IS_ERR(timer->rtc)) {
+	timer->rtc->ops = &brcmstb_waketmr_ops;
+
+	ret = rtc_register_device(timer->rtc);
+	if (ret) {
 		dev_err(dev, "unable to register device\n");
-		ret = PTR_ERR(timer->rtc);
 		goto err_notifier;
 	}
 
@@ -288,7 +292,6 @@ static int brcmstb_waketmr_remove(struct platform_device *pdev)
 	struct brcmstb_waketmr *timer = dev_get_drvdata(&pdev->dev);
 
 	unregister_reboot_notifier(&timer->reboot_notifier);
-	rtc_device_unregister(timer->rtc);
 
 	return 0;
 }