Merge branch 'next' into for-linus

Prepare first round of input updates for 3.20.

1 files changed, 24 insertions, 7 deletions

diff --git a/include/linux/usb/gadget.h b/include/linux/usb/gadget.h
index c3a61853cd1..70ddb3943b6 100644
--- a/include/linux/usb/gadget.h
+++ b/include/linux/usb/gadget.h
@@ -345,12 +345,13 @@ static inline int usb_ep_queue(struct usb_ep *ep,
  * @ep:the endpoint associated with the request
  * @req:the request being canceled
  *
- * if the request is still active on the endpoint, it is dequeued and its
+ * If the request is still active on the endpoint, it is dequeued and its
  * completion routine is called (with status -ECONNRESET); else a negative
- * error code is returned.
+ * error code is returned. This is guaranteed to happen before the call to
+ * usb_ep_dequeue() returns.
  *
- * note that some hardware can't clear out write fifos (to unlink the request
- * at the head of the queue) except as part of disconnecting from usb.  such
+ * Note that some hardware can't clear out write fifos (to unlink the request
+ * at the head of the queue) except as part of disconnecting from usb. Such
  * restrictions prevent drivers from supporting configuration changes,
  * even to configuration zero (a "chapter 9" requirement).
  */
@@ -489,8 +490,7 @@ struct usb_gadget_ops {
 	void	(*get_config_params)(struct usb_dcd_config_params *);
 	int	(*udc_start)(struct usb_gadget *,
 			struct usb_gadget_driver *);
-	int	(*udc_stop)(struct usb_gadget *,
-			struct usb_gadget_driver *);
+	int	(*udc_stop)(struct usb_gadget *);
 };
 
 /**
@@ -816,6 +816,8 @@ static inline int usb_gadget_disconnect(struct usb_gadget *gadget)
  *	Called in a context that permits sleeping.
  * @suspend: Invoked on USB suspend.  May be called in_interrupt.
  * @resume: Invoked on USB resume.  May be called in_interrupt.
+ * @reset: Invoked on USB bus reset. It is mandatory for all gadget drivers
+ *	and should be called in_interrupt.
  * @driver: Driver model state for this driver.
  *
  * Devices are disabled till a gadget driver successfully bind()s, which
@@ -873,6 +875,7 @@ struct usb_gadget_driver {
 	void			(*disconnect)(struct usb_gadget *);
 	void			(*suspend)(struct usb_gadget *);
 	void			(*resume)(struct usb_gadget *);
+	void			(*reset)(struct usb_gadget *);
 
 	/* FIXME support safe rmmod */
 	struct device_driver	driver;
@@ -921,7 +924,7 @@ extern int usb_add_gadget_udc_release(struct device *parent,
 		struct usb_gadget *gadget, void (*release)(struct device *dev));
 extern int usb_add_gadget_udc(struct device *parent, struct usb_gadget *gadget);
 extern void usb_del_gadget_udc(struct usb_gadget *gadget);
-extern int udc_attach_driver(const char *name,
+extern int usb_udc_attach_driver(const char *name,
 		struct usb_gadget_driver *driver);
 
 /*-------------------------------------------------------------------------*/
@@ -1013,6 +1016,20 @@ extern void usb_gadget_set_state(struct usb_gadget *gadget,
 
 /*-------------------------------------------------------------------------*/
 
+/* utility to tell udc core that the bus reset occurs */
+extern void usb_gadget_udc_reset(struct usb_gadget *gadget,
+		struct usb_gadget_driver *driver);
+
+/*-------------------------------------------------------------------------*/
+
+/* utility to give requests back to the gadget layer */
+
+extern void usb_gadget_giveback_request(struct usb_ep *ep,
+		struct usb_request *req);
+
+
+/*-------------------------------------------------------------------------*/
+
 /* utility wrapping a simple endpoint selection policy */
 
 extern struct usb_ep *usb_ep_autoconfig(struct usb_gadget *,