From 787f4e5adaabba01becd646818dbace2d7e6b386 Mon Sep 17 00:00:00 2001
From: Andiry Xu <andiry.xu@amd.com>
Date: Thu, 22 Jul 2010 15:23:52 -0700
Subject: [PATCH] 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>
---
 drivers/usb/host/xhci.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c
index 295a0a2063a6..89ac48534099 100644
--- 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;
-- 
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