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[Qemu-devel] [PATCH 1/2] xhci iso: fix time calculation


From: Gerd Hoffmann
Subject: [Qemu-devel] [PATCH 1/2] xhci iso: fix time calculation
Date: Thu, 6 Feb 2014 12:42:02 +0100

Frameid specifies frames not microframes, so we
need to shift it to get the microframe index.

Signed-off-by: Gerd Hoffmann <address@hidden>
---
 hw/usb/hcd-xhci.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/hw/usb/hcd-xhci.c b/hw/usb/hcd-xhci.c
index 44964f4..2c54b86 100644
--- a/hw/usb/hcd-xhci.c
+++ b/hw/usb/hcd-xhci.c
@@ -1974,8 +1974,8 @@ static void xhci_calc_iso_kick(XHCIState *xhci, 
XHCITransfer *xfer,
             xfer->mfindex_kick = asap;
         }
     } else {
-        xfer->mfindex_kick = (xfer->trbs[0].control >> TRB_TR_FRAMEID_SHIFT)
-            & TRB_TR_FRAMEID_MASK;
+        xfer->mfindex_kick = ((xfer->trbs[0].control >> TRB_TR_FRAMEID_SHIFT)
+                              & TRB_TR_FRAMEID_MASK) << 3;
         xfer->mfindex_kick |= mfindex & ~0x3fff;
         if (xfer->mfindex_kick < mfindex) {
             xfer->mfindex_kick += 0x4000;
-- 
1.8.3.1




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