usb: gadget: move bind() callback back to struct usb_gadget_driver

This partly reverts 07a18bd7 ("usb gadget: don't save bind callback in
struct usb_composite_driver") and fixes new drivers. The section missmatch
problems was solved by whitelisting bind callback in modpost.

Acked-by: Michal Nazarewicz <mina86@mina86.com>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>

1 files changed, 3 insertions, 3 deletions

diff --git a/include/linux/usb/gadget.h b/include/linux/usb/gadget.h
index d05b220f0fd3..9eb4e712168f 100644
--- a/include/linux/usb/gadget.h
+++ b/include/linux/usb/gadget.h
@@ -766,6 +766,7 @@ static inline int usb_gadget_disconnect(struct usb_gadget *gadget)
  *      when the host is disconnected.  May be called in_interrupt; this
  *      may not sleep.  Some devices can't detect disconnect, so this might
  *      not be called except as part of controller shutdown.
+ * @bind: the driver's bind callback
  * @unbind: Invoked when the driver is unbound from a gadget,
  *      usually from rmmod (after a disconnect is reported).
  *      Called in a context that permits sleeping.
@@ -820,6 +821,7 @@ static inline int usb_gadget_disconnect(struct usb_gadget *gadget)
 struct usb_gadget_driver {
         char                    *function;
         enum usb_device_speed   max_speed;
+        int                     (*bind)(struct usb_gadget *gadget);
         void                    (*unbind)(struct usb_gadget *);
         int                     (*setup)(struct usb_gadget *,
                                         const struct usb_ctrlrequest *);
@@ -845,7 +847,6 @@ struct usb_gadget_driver {
 /**
  * usb_gadget_probe_driver - probe a gadget driver
  * @driver: the driver being registered
- * @bind: the driver's bind callback
  * Context: can sleep
  *
  * Call this in your gadget driver's module initialization function,
@@ -854,8 +855,7 @@ struct usb_gadget_driver {
  * registration call returns.  It's expected that the @bind() function will
  * be in init sections.
  */
-int usb_gadget_probe_driver(struct usb_gadget_driver *driver,
-                int (*bind)(struct usb_gadget *));
+int usb_gadget_probe_driver(struct usb_gadget_driver *driver);
 
 /**
  * usb_gadget_unregister_driver - unregister a gadget driver