xhci: relax link check

The strict td link limit added by commit "05f43d4 xhci: limit the
number of link trbs we are willing to process" causes problems with
Windows guests. Let's raise the limit.

This change is analogous to:

  commit ab6b1105a2259c7072905887f71caa850ce63190
  Author: Gerd Hoffmann <kraxel@redhat.com>
  Date:   Tue Mar 7 09:40:18 2017 +0100

      ohci: relax link check

Signed-off-by: Ladi Prosek <lprosek@redhat.com>
Message-id: 20170512102100.22675-1-lprosek@redhat.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>

diff --git a/hw/usb/hcd-xhci.c b/hw/usb/hcd-xhci.c
index d3d47bf92529dcdb6cfd008bcda40bdc05ebca0e..77d8e1137aca98bbaa464737c638379b7f927046 100644 (file)
--- a/hw/usb/hcd-xhci.c
+++ b/hw/usb/hcd-xhci.c
@@ -50,7 +50,7 @@
 /* Very pessimistic, let's hope it's enough for all cases */
 #define EV_QUEUE (((3 * 24) + 16) * MAXSLOTS)
 
-#define TRB_LINK_LIMIT  4
+#define TRB_LINK_LIMIT  32
 #define COMMAND_LIMIT   256
 #define TRANSFER_LIMIT  256