--- zzzz-none-000/linux-3.10.107/drivers/rtc/rtc-nuc900.c	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/drivers/rtc/rtc-nuc900.c	2021-02-04 17:41:59.000000000 +0000
@@ -99,7 +99,7 @@
 	if (!timeout)
 		return ERR_PTR(-EPERM);
 
-	return 0;
+	return NULL;
 }
 
 static int nuc900_rtc_bcd2bin(unsigned int timereg,
@@ -229,10 +229,9 @@
 
 	nuc900_rtc = devm_kzalloc(&pdev->dev, sizeof(struct nuc900_rtc),
 				GFP_KERNEL);
-	if (!nuc900_rtc) {
-		dev_err(&pdev->dev, "kzalloc nuc900_rtc failed\n");
+	if (!nuc900_rtc)
 		return -ENOMEM;
-	}
+
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	nuc900_rtc->rtc_reg = devm_ioremap_resource(&pdev->dev, res);
 	if (IS_ERR(nuc900_rtc->rtc_reg))
@@ -260,18 +259,9 @@
 	return 0;
 }
 
-static int __exit nuc900_rtc_remove(struct platform_device *pdev)
-{
-	platform_set_drvdata(pdev, NULL);
-
-	return 0;
-}
-
 static struct platform_driver nuc900_rtc_driver = {
-	.remove		= __exit_p(nuc900_rtc_remove),
 	.driver		= {
 		.name	= "nuc900-rtc",
-		.owner	= THIS_MODULE,
 	},
 };