USB: gadget: composite: added disconnect callback

Added a disconnect() callback to composite devices which
is called by composite glue when its disconnect callback
is called by gadget.

Signed-off-by: Michal Nazarewicz <m.nazarewicz@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Acked-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/usb/gadget/composite.c b/drivers/usb/gadget/composite.c
index 125167e..e483f80 100644 (file)
--- a/drivers/usb/gadget/composite.c
+++ b/drivers/usb/gadget/composite.c
@@ -956,6 +956,8 @@ static void composite_disconnect(struct usb_gadget *gadget)
        spin_lock_irqsave(&cdev->lock, flags);
        if (cdev->config)
                reset_config(cdev);
+       if (composite->disconnect)
+               composite->disconnect(cdev);
        spin_unlock_irqrestore(&cdev->lock, flags);
 }
 

diff --git a/include/linux/usb/composite.h b/include/linux/usb/composite.h
index f378075..890bc14 100644 (file)
--- a/include/linux/usb/composite.h
+++ b/include/linux/usb/composite.h
@@ -276,6 +276,8 @@ struct usb_composite_driver {
        int                     (*bind)(struct usb_composite_dev *);
        int                     (*unbind)(struct usb_composite_dev *);
 
+       void                    (*disconnect)(struct usb_composite_dev *);
+
        /* global suspend hooks */
        void                    (*suspend)(struct usb_composite_dev *);
        void                    (*resume)(struct usb_composite_dev *);