xhci: fix endpoint interval calculation

Cc: qemu-stable@nongnu.org Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
qemu · Sep 2, 2013 · ca71627 · ca71627
1 parent 65d81ed
commit ca71627
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/hw/usb/hcd-xhci.c b/hw/usb/hcd-xhci.c
@@ -1274,7 +1274,7 @@ 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,