@@ -685,6 +685,9 @@ int xhci_bulk_tx(struct usb_device *udev, unsigned long pipe,
reset_ep(udev, ep_index);
ring = virt_dev->eps[ep_index].ring;
+ if (!ring)
+ return -EINVAL;
+
/*
* How much data is (potentially) left before the 64KB boundary?
* XHCI Spec puts restriction( TABLE 49 and 6.4.1 section of XHCI Spec)
@@ -871,6 +874,8 @@ int xhci_ctrl_tx(struct usb_device *udev, unsigned long pipe,
ep_index = usb_pipe_ep_index(pipe);
ep_ring = virt_dev->eps[ep_index].ring;
+ if (!ep_ring)
+ return -EINVAL;
/*
* Check to see if the max packet size for the default control