USB: Add hub descriptor update hook for xHCI
Add a hook for updating xHCI internal structures after khubd fetches the
hub descriptor and sets up the hub's TT information. The xHCI driver must
update the internal structures before devices under the hub can be
enumerated.
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/drivers/usb/core/hcd.h b/drivers/usb/core/hcd.h
index ec5c67e..79782a1 100644
--- a/drivers/usb/core/hcd.h
+++ b/drivers/usb/core/hcd.h
@@ -267,6 +267,11 @@
void (*reset_bandwidth)(struct usb_hcd *, struct usb_device *);
/* Returns the hardware-chosen device address */
int (*address_device)(struct usb_hcd *, struct usb_device *udev);
+ /* Notifies the HCD after a hub descriptor is fetched.
+ * Will block.
+ */
+ int (*update_hub_device)(struct usb_hcd *, struct usb_device *hdev,
+ struct usb_tt *tt, gfp_t mem_flags);
};
extern int usb_hcd_link_urb_to_ep(struct usb_hcd *hcd, struct urb *urb);