usb: gadget: configfs: add a method to unregister the gadget

Add a method to unregister the gadget using its config_item.

There can be functions (e.g. mass storage), which in some circumstances
need the gadget stopped. Add a method of stopping the gadget.

Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

diff --git a/drivers/usb/gadget/configfs.c b/drivers/usb/gadget/configfs.c
index 1bfacbf..2588511 100644 (file)
--- a/drivers/usb/gadget/configfs.c
+++ b/drivers/usb/gadget/configfs.c
@@ -991,6 +991,14 @@ static struct configfs_subsystem gadget_subsys = {
        .su_mutex = __MUTEX_INITIALIZER(gadget_subsys.su_mutex),
 };
 
+void unregister_gadget_item(struct config_item *item)
+{
+       struct gadget_info *gi = to_gadget_info(item);
+
+       unregister_gadget(gi);
+}
+EXPORT_SYMBOL(unregister_gadget_item);
+
 static int __init gadget_cfs_init(void)
 {
        int ret;

diff --git a/drivers/usb/gadget/configfs.h b/drivers/usb/gadget/configfs.h
new file mode 100644 (file)
index 0000000..a7b564a
--- /dev/null
+++ b/drivers/usb/gadget/configfs.h
@@ -0,0 +1,6 @@
+#ifndef USB__GADGET__CONFIGFS__H
+#define USB__GADGET__CONFIGFS__H
+
+void unregister_gadget_item(struct config_item *item);
+
+#endif /*  USB__GADGET__CONFIGFS__H */