diff --git a/drivers/i2c/busses/i2c-digicolor.c b/drivers/i2c/busses/i2c-digicolor.c
index 03f1e5549896..9604024e0eb0 100644
--- a/drivers/i2c/busses/i2c-digicolor.c
+++ b/drivers/i2c/busses/i2c-digicolor.c
@@ -12,11 +12,10 @@
 
 #include <linux/clk.h>
 #include <linux/completion.h>
+#include <linux/delay.h>
 #include <linux/i2c.h>
 #include <linux/interrupt.h>
 #include <linux/io.h>
-#include <linux/clk.h>
-#include <linux/delay.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/of.h>
diff --git a/drivers/i2c/busses/i2c-mxs.c b/drivers/i2c/busses/i2c-mxs.c
index 56fceff6ba14..3e84f6c090a5 100644
--- a/drivers/i2c/busses/i2c-mxs.c
+++ b/drivers/i2c/busses/i2c-mxs.c
@@ -913,7 +913,7 @@ static void __exit mxs_i2c_exit(void)
 module_exit(mxs_i2c_exit);
 
 MODULE_AUTHOR("Marek Vasut <marex@denx.de>");
-MODULE_AUTHOR("Wolfram Sang <w.sang@pengutronix.de>");
+MODULE_AUTHOR("Wolfram Sang <kernel@pengutronix.de>");
 MODULE_DESCRIPTION("MXS I2C Bus Driver");
 MODULE_LICENSE("GPL");
 MODULE_ALIAS("platform:" DRIVER_NAME);
diff --git a/drivers/i2c/busses/i2c-pca-platform.c b/drivers/i2c/busses/i2c-pca-platform.c
index 6336f02ec566..3bd2e7d06e4b 100644
--- a/drivers/i2c/busses/i2c-pca-platform.c
+++ b/drivers/i2c/busses/i2c-pca-platform.c
@@ -285,6 +285,6 @@ static struct platform_driver i2c_pca_pf_driver = {
 
 module_platform_driver(i2c_pca_pf_driver);
 
-MODULE_AUTHOR("Wolfram Sang <w.sang@pengutronix.de>");
+MODULE_AUTHOR("Wolfram Sang <kernel@pengutronix.de>");
 MODULE_DESCRIPTION("I2C-PCA9564/PCA9665 platform driver");
 MODULE_LICENSE("GPL");
diff --git a/drivers/i2c/busses/i2c-rk3x.c b/drivers/i2c/busses/i2c-rk3x.c
index 5f96b1b3e3a5..019d5426fe52 100644
--- a/drivers/i2c/busses/i2c-rk3x.c
+++ b/drivers/i2c/busses/i2c-rk3x.c
@@ -833,7 +833,7 @@ static int rk3x_i2c_xfer(struct i2c_adapter *adap,
 	clk_disable(i2c->clk);
 	spin_unlock_irqrestore(&i2c->lock, flags);
 
-	return ret;
+	return ret < 0 ? ret : num;
 }
 
 static u32 rk3x_i2c_func(struct i2c_adapter *adap)
diff --git a/drivers/i2c/busses/i2c-st.c b/drivers/i2c/busses/i2c-st.c
index 88057fad9dfe..ea72dca32fdf 100644
--- a/drivers/i2c/busses/i2c-st.c
+++ b/drivers/i2c/busses/i2c-st.c
@@ -10,17 +10,18 @@
  * published by the Free Software Foundation.
  */
 
-#include <linux/module.h>
-#include <linux/platform_device.h>
-#include <linux/i2c.h>
 #include <linux/clk.h>
-#include <linux/io.h>
 #include <linux/delay.h>
-#include <linux/interrupt.h>
 #include <linux/err.h>
-#include <linux/of.h>
+#include <linux/i2c.h>
+#include <linux/interrupt.h>
+#include <linux/io.h>
+#include <linux/module.h>
 #include <linux/of_address.h>
 #include <linux/of_irq.h>
+#include <linux/of.h>
+#include <linux/pinctrl/consumer.h>
+#include <linux/platform_device.h>
 
 /* SSC registers */
 #define SSC_BRG				0x000
diff --git a/drivers/i2c/i2c-core.c b/drivers/i2c/i2c-core.c
index 098f698fe8f4..987c124432c5 100644
--- a/drivers/i2c/i2c-core.c
+++ b/drivers/i2c/i2c-core.c
@@ -1413,6 +1413,8 @@ static int i2c_register_adapter(struct i2c_adapter *adap)
 
 	dev_dbg(&adap->dev, "adapter [%s] registered\n", adap->name);
 
+	pm_runtime_no_callbacks(&adap->dev);
+
 #ifdef CONFIG_I2C_COMPAT
 	res = class_compat_create_link(i2c_adapter_compat_class, &adap->dev,
 				       adap->dev.parent);
diff --git a/drivers/i2c/i2c-mux.c b/drivers/i2c/i2c-mux.c
index 593f7ca9adc7..06cc1ff088f1 100644
--- a/drivers/i2c/i2c-mux.c
+++ b/drivers/i2c/i2c-mux.c
@@ -32,8 +32,9 @@ struct i2c_mux_priv {
 	struct i2c_algorithm algo;
 
 	struct i2c_adapter *parent;
-	void *mux_priv;	/* the mux chip/device */
-	u32  chan_id;	/* the channel id */
+	struct device *mux_dev;
+	void *mux_priv;
+	u32 chan_id;
 
 	int (*select)(struct i2c_adapter *, void *mux_priv, u32 chan_id);
 	int (*deselect)(struct i2c_adapter *, void *mux_priv, u32 chan_id);
@@ -119,6 +120,7 @@ struct i2c_adapter *i2c_add_mux_adapter(struct i2c_adapter *parent,
 
 	/* Set up private adapter data */
 	priv->parent = parent;
+	priv->mux_dev = mux_dev;
 	priv->mux_priv = mux_priv;
 	priv->chan_id = chan_id;
 	priv->select = select;
@@ -203,7 +205,7 @@ void i2c_del_mux_adapter(struct i2c_adapter *adap)
 	char symlink_name[20];
 
 	snprintf(symlink_name, sizeof(symlink_name), "channel-%u", priv->chan_id);
-	sysfs_remove_link(&adap->dev.parent->kobj, symlink_name);
+	sysfs_remove_link(&priv->mux_dev->kobj, symlink_name);
 
 	sysfs_remove_link(&priv->adap.dev.kobj, "mux_device");
 	i2c_del_adapter(adap);