1 files changed, 7 insertions, 0 deletions

diff --git a/drivers/usb/core/hub.h b/drivers/usb/core/hub.h
index 45d070dd1d03..34c1a7e22aae 100644
--- a/drivers/usb/core/hub.h
+++ b/drivers/usb/core/hub.h
@@ -140,6 +140,13 @@ static inline int hub_is_superspeed(struct usb_device *hdev)
         return hdev->descriptor.bDeviceProtocol == USB_HUB_PR_SS;
 }
 
+static inline int hub_is_superspeedplus(struct usb_device *hdev)
+{
+        return (hdev->descriptor.bDeviceProtocol == USB_HUB_PR_SS &&
+                le16_to_cpu(hdev->descriptor.bcdUSB) >= 0x0310 &&
+                hdev->bos->ssp_cap);
+}
+
 static inline unsigned hub_power_on_good_delay(struct usb_hub *hub)
 {
         unsigned delay = hub->descriptor->bPwrOn2PwrGood * 2;