--- zzzz-none-000/linux-3.10.107/drivers/mfd/aat2870-core.c	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/drivers/mfd/aat2870-core.c	2021-02-04 17:41:59.000000000 +0000
@@ -293,7 +293,7 @@
 	unsigned long addr, val;
 	int ret;
 
-	buf_size = min(count, (sizeof(buf)-1));
+	buf_size = min(count, (size_t)(sizeof(buf)-1));
 	if (copy_from_user(buf, user_buf, buf_size)) {
 		dev_err(aat2870->dev, "Failed to copy from user\n");
 		return -EFAULT;
@@ -303,7 +303,10 @@
 	while (*start == ' ')
 		start++;
 
-	addr = simple_strtoul(start, &start, 16);
+	ret = kstrtoul(start, 16, &addr);
+	if (ret)
+		return ret;
+
 	if (addr >= AAT2870_REG_NUM) {
 		dev_err(aat2870->dev, "Invalid address, 0x%lx\n", addr);
 		return -EINVAL;
@@ -312,8 +315,9 @@
 	while (*start == ' ')
 		start++;
 
-	if (strict_strtoul(start, 16, &val))
-		return -EINVAL;
+	ret = kstrtoul(start, 16, &val);
+	if (ret)
+		return ret;
 
 	ret = aat2870->write(aat2870, (u8)addr, (u8)val);
 	if (ret)
@@ -362,7 +366,7 @@
 static int aat2870_i2c_probe(struct i2c_client *client,
 			     const struct i2c_device_id *id)
 {
-	struct aat2870_platform_data *pdata = client->dev.platform_data;
+	struct aat2870_platform_data *pdata = dev_get_platdata(&client->dev);
 	struct aat2870_data *aat2870;
 	int i, j;
 	int ret = 0;
@@ -496,7 +500,6 @@
 static struct i2c_driver aat2870_i2c_driver = {
 	.driver = {
 		.name	= "aat2870",
-		.owner	= THIS_MODULE,
 		.pm	= &aat2870_pm_ops,
 	},
 	.probe		= aat2870_i2c_probe,