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Diffstat (limited to 'include/linux/usb_gadget.h')
-rw-r--r--include/linux/usb_gadget.h7
1 files changed, 5 insertions, 2 deletions
diff --git a/include/linux/usb_gadget.h b/include/linux/usb_gadget.h
index ff81117eb73..1d78870ed8a 100644
--- a/include/linux/usb_gadget.h
+++ b/include/linux/usb_gadget.h
@@ -801,7 +801,9 @@ struct usb_gadget_driver {
* Call this in your gadget driver's module initialization function,
* to tell the underlying usb controller driver about your driver.
* The driver's bind() function will be called to bind it to a
- * gadget. This function must be called in a context that can sleep.
+ * gadget before this registration call returns. It's expected that
+ * the bind() functions will be in init sections.
+ * This function must be called in a context that can sleep.
*/
int usb_gadget_register_driver (struct usb_gadget_driver *driver);
@@ -814,7 +816,8 @@ int usb_gadget_register_driver (struct usb_gadget_driver *driver);
* going away. If the controller is connected to a USB host,
* it will first disconnect(). The driver is also requested
* to unbind() and clean up any device state, before this procedure
- * finally returns.
+ * finally returns. It's expected that the unbind() functions
+ * will in in exit sections, so may not be linked in some kernels.
* This function must be called in a context that can sleep.
*/
int usb_gadget_unregister_driver (struct usb_gadget_driver *driver);