USB: xHCI: Isoc urb enqueue

Enable isochronous urb enqueue.

Signed-off-by: Andiry Xu <andiry.xu@amd.com>
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/host/xhci.c b/drivers/usb/host/xhci.c
index 295a0a2..89ac485 100644 (file)
--- a/drivers/usb/host/xhci.c
+++ b/drivers/usb/host/xhci.c
@@ -897,7 +897,12 @@ int xhci_urb_enqueue(struct usb_hcd *hcd, struct urb *urb, gfp_t mem_flags)
                                slot_id, ep_index);
                spin_unlock_irqrestore(&xhci->lock, flags);
        } else {
-               ret = -EINVAL;
+               spin_lock_irqsave(&xhci->lock, flags);
+               if (xhci->xhc_state & XHCI_STATE_DYING)
+                       goto dying;
+               ret = xhci_queue_isoc_tx_prepare(xhci, GFP_ATOMIC, urb,
+                               slot_id, ep_index);
+               spin_unlock_irqrestore(&xhci->lock, flags);
        }
 exit:
        return ret;