[PATCH] I2C: add kobj_to_i2c_client

Move the inline function kobj_to_i2c_client() from max6875.c to i2c.h.

Signed-off-by: Ben Gardner <bgardner@wabtec.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/drivers/i2c/chips/max6875.c b/drivers/i2c/chips/max6875.c
index 1a7993e..35a8e92 100644
--- a/drivers/i2c/chips/max6875.c
+++ b/drivers/i2c/chips/max6875.c
@@ -131,11 +131,6 @@
 	up(&data->update_lock);
 }
 
-static inline struct i2c_client *kobj_to_i2c_client(struct kobject *kobj)
-{
-	return to_i2c_client(container_of(kobj, struct device, kobj));
-}
-
 static ssize_t max6875_read(struct kobject *kobj, char *buf, loff_t off,
 			    size_t count)
 {
diff --git a/include/linux/i2c.h b/include/linux/i2c.h
index be837b1..0174459 100644
--- a/include/linux/i2c.h
+++ b/include/linux/i2c.h
@@ -160,6 +160,11 @@
 };
 #define to_i2c_client(d) container_of(d, struct i2c_client, dev)
 
+static inline struct i2c_client *kobj_to_i2c_client(struct kobject *kobj)
+{
+	return to_i2c_client(container_of(kobj, struct device, kobj));
+}
+
 static inline void *i2c_get_clientdata (struct i2c_client *dev)
 {
 	return dev_get_drvdata (&dev->dev);