--- zzzz-none-000/linux-3.10.107/drivers/mfd/mc13xxx-i2c.c	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/drivers/mfd/mc13xxx-i2c.c	2021-02-04 17:41:59.000000000 +0000
@@ -10,7 +10,6 @@
 #include <linux/slab.h>
 #include <linux/module.h>
 #include <linux/platform_device.h>
-#include <linux/mutex.h>
 #include <linux/mfd/core.h>
 #include <linux/mfd/mc13xxx.h>
 #include <linux/of.h>
@@ -47,7 +46,7 @@
 };
 MODULE_DEVICE_TABLE(of, mc13xxx_dt_ids);
 
-static struct regmap_config mc13xxx_regmap_i2c_config = {
+static const struct regmap_config mc13xxx_regmap_i2c_config = {
 	.reg_bits = 8,
 	.val_bits = 24,
 
@@ -60,7 +59,6 @@
 		const struct i2c_device_id *id)
 {
 	struct mc13xxx *mc13xxx;
-	struct mc13xxx_platform_data *pdata = dev_get_platdata(&client->dev);
 	int ret;
 
 	mc13xxx = devm_kzalloc(&client->dev, sizeof(*mc13xxx), GFP_KERNEL);
@@ -69,16 +67,13 @@
 
 	dev_set_drvdata(&client->dev, mc13xxx);
 
-	mc13xxx->dev = &client->dev;
-	mutex_init(&mc13xxx->lock);
+	mc13xxx->irq = client->irq;
 
 	mc13xxx->regmap = devm_regmap_init_i2c(client,
 					       &mc13xxx_regmap_i2c_config);
 	if (IS_ERR(mc13xxx->regmap)) {
 		ret = PTR_ERR(mc13xxx->regmap);
-		dev_err(mc13xxx->dev, "Failed to initialize register map: %d\n",
-				ret);
-		dev_set_drvdata(&client->dev, NULL);
+		dev_err(&client->dev, "Failed to initialize regmap: %d\n", ret);
 		return ret;
 	}
 
@@ -90,24 +85,17 @@
 		mc13xxx->variant = (void *)id->driver_data;
 	}
 
-	ret = mc13xxx_common_init(mc13xxx, pdata, client->irq);
-
-	return ret;
+	return mc13xxx_common_init(&client->dev);
 }
 
 static int mc13xxx_i2c_remove(struct i2c_client *client)
 {
-	struct mc13xxx *mc13xxx = dev_get_drvdata(&client->dev);
-
-	mc13xxx_common_cleanup(mc13xxx);
-
-	return 0;
+	return mc13xxx_common_exit(&client->dev);
 }
 
 static struct i2c_driver mc13xxx_i2c_driver = {
 	.id_table = mc13xxx_i2c_device_id,
 	.driver = {
-		.owner = THIS_MODULE,
 		.name = "mc13xxx",
 		.of_match_table = mc13xxx_dt_ids,
 	},