diff --git a/include/linux/usb.h b/include/linux/usb.h
index c86e4ec4d00f..c28fc391444a 100644
--- a/include/linux/usb.h
+++ b/include/linux/usb.h
@@ -422,7 +422,7 @@ struct usb_devmap {
  * Allocated per bus (tree of devices) we have:
  */
 struct usb_bus {
-	struct device *controller;	/* host/master side hardware */
+	struct device *controller;	/* host side hardware */
 	struct device *sysdev;		/* as seen from firmware or bus */
 	int busnum;			/* Bus number (in order of reg) */
 	const char *bus_name;		/* stable id (PCI slot_name etc) */
diff --git a/include/linux/usb/ch9.h b/include/linux/usb/ch9.h
index 58b83066bea4..604c6c514a50 100644
--- a/include/linux/usb/ch9.h
+++ b/include/linux/usb/ch9.h
@@ -6,13 +6,13 @@
  * Wireless USB 1.0 (spread around).  Linux has several APIs in C that
  * need these:
  *
- * - the master/host side Linux-USB kernel driver API;
+ * - the host side Linux-USB kernel driver API;
  * - the "usbfs" user space API; and
- * - the Linux "gadget" slave/device/peripheral side driver API.
+ * - the Linux "gadget" device/peripheral side driver API.
  *
  * USB 2.0 adds an additional "On The Go" (OTG) mode, which lets systems
- * act either as a USB master/host or as a USB slave/device.  That means
- * the master and slave side APIs benefit from working well together.
+ * act either as a USB host or as a USB device.  That means the host and
+ * device side APIs benefit from working well together.
  *
  * There's also "Wireless USB", using low power short range radios for
  * peripheral interconnection but otherwise building on the USB framework.
diff --git a/include/linux/usb/gadget.h b/include/linux/usb/gadget.h
index 6a178177e4c9..298b334e2951 100644
--- a/include/linux/usb/gadget.h
+++ b/include/linux/usb/gadget.h
@@ -4,7 +4,8 @@
  *
  * We call the USB code inside a Linux-based peripheral device a "gadget"
  * driver, except for the hardware-specific bus glue.  One USB host can
- * master many USB gadgets, but the gadgets are only slaved to one host.
+ * talk to many USB gadgets, but the gadgets are only able to communicate
+ * to one host.
  *
  *
  * (C) Copyright 2002-2004 by David Brownell
@@ -328,7 +329,7 @@ struct usb_gadget_ops {
 };
 
 /**
- * struct usb_gadget - represents a usb slave device
+ * struct usb_gadget - represents a usb device
  * @work: (internal use) Workqueue to be used for sysfs_notify()
  * @udc: struct usb_udc pointer for this gadget
  * @ops: Function pointers used to access hardware-specific operations.
@@ -602,7 +603,7 @@ static inline int usb_gadget_activate(struct usb_gadget *gadget)
 /*-------------------------------------------------------------------------*/
 
 /**
- * struct usb_gadget_driver - driver for usb 'slave' devices
+ * struct usb_gadget_driver - driver for usb gadget devices
  * @function: String describing the gadget's function
  * @max_speed: Highest speed the driver handles.
  * @setup: Invoked for ep0 control requests that aren't handled by