From c0a5eb81b43e56569cfdb9c86fd78930b2765b96 Mon Sep 17 00:00:00 2001

From: Gerd Hoffmann <kraxel@redhat.com>

Date: Wed, 28 Aug 2013 11:39:02 +0200

Subject: [PATCH] xhci: fix endpoint interval calculation

Cc: qemu-stable@nongnu.org

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>

(cherry picked from commit ca7162782a293f525633e5816470498dd86a51cf)

Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>

---

 hw/usb/hcd-xhci.c | 2 +-

 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/hw/usb/hcd-xhci.c b/hw/usb/hcd-xhci.c

index 58c88b8..3c0ba8e 100644

--- a/hw/usb/hcd-xhci.c

+++ b/hw/usb/hcd-xhci.c

@@ -1257,7 +1257,7 @@ static void xhci_init_epctx(XHCIEPContext *epctx,

         epctx->ring.ccs = ctx[2] & 1;

     }

-    epctx->interval = 1 << (ctx[0] >> 16) & 0xff;

+    epctx->interval = 1 << ((ctx[0] >> 16) & 0xff);

 }

 static TRBCCode xhci_enable_ep(XHCIState *xhci, unsigned int slotid,