1 files changed, 10 insertions, 0 deletions

diff --git a/include/linux/usb/hcd.h b/include/linux/usb/hcd.h
index d268415b7a40..aca73a5c3af7 100644
--- a/include/linux/usb/hcd.h
+++ b/include/linux/usb/hcd.h
@@ -250,6 +250,16 @@ struct hc_driver {
         int     (*alloc_dev)(struct usb_hcd *, struct usb_device *);
                 /* Called by usb_disconnect to free HC device structures */
         void    (*free_dev)(struct usb_hcd *, struct usb_device *);
+        /* Change a group of bulk endpoints to support multiple stream IDs */
+        int     (*alloc_streams)(struct usb_hcd *hcd, struct usb_device *udev,
+                struct usb_host_endpoint **eps, unsigned int num_eps,
+                unsigned int num_streams, gfp_t mem_flags);
+        /* Reverts a group of bulk endpoints back to not using stream IDs.
+         * Can fail if we run out of memory.
+         */
+        int     (*free_streams)(struct usb_hcd *hcd, struct usb_device *udev,
+                struct usb_host_endpoint **eps, unsigned int num_eps,
+                gfp_t mem_flags);
 
         /* Bandwidth computation functions */
         /* Note that add_endpoint() can only be called once per endpoint before