USB: EHCI: EHCI 1.1 addendum: Basic LPM feature support

With this patch, the LPM capable EHCI host controller can put device
into L1 sleep state which is a mode that can enter/exit quickly, and
reduce power consumption.

Signed-off-by: Jacob Pan <jacob.jun.pan@intel.com>
Signed-off-by: Alek Du <alek.du@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 4 insertions, 0 deletions

diff --git a/include/linux/usb/hcd.h b/include/linux/usb/hcd.h
index 11b638195901..9b867e64a0f4 100644
--- a/include/linux/usb/hcd.h
+++ b/include/linux/usb/hcd.h
@@ -300,6 +300,10 @@ struct hc_driver {
         int     (*update_hub_device)(struct usb_hcd *, struct usb_device *hdev,
                         struct usb_tt *tt, gfp_t mem_flags);
         int     (*reset_device)(struct usb_hcd *, struct usb_device *);
+                /* Notifies the HCD after a device is connected and its
+                 * address is set
+                 */
+        int     (*update_device)(struct usb_hcd *, struct usb_device *);
 };
 
 extern int usb_hcd_link_urb_to_ep(struct usb_hcd *hcd, struct urb *urb);