[janderwald] 55843: [USBUHCI] - Invert data toggle

Author: janderwald
Date: Fri Feb 24 17:58:55 2012
New Revision: 55843

URL: http://svn.reactos.org/svn/reactos?rev=55843&view=rev
Log:
[USBUHCI]
- Invert data toggle

Modified:
    trunk/reactos/drivers/usb/usbuhci/usb_request.cpp

Modified: trunk/reactos/drivers/usb/usbuhci/usb_request.cpp
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/drivers/usb/usbuhci/usb_re…
==============================================================================
--- trunk/reactos/drivers/usb/usbuhci/usb_request.cpp [iso-8859-1] (original)
+++ trunk/reactos/drivers/usb/usbuhci/usb_request.cpp [iso-8859-1] Fri Feb 24 17:58:55
2012
@@ -1247,6 +1247,7 @@
 {
     PUHCI_TRANSFER_DESCRIPTOR Descriptor, NextDescriptor;
     ULONG ErrorCount;
+    UCHAR DataToggle = 0;
 
     //
     // grab first transfer descriptor
@@ -1254,6 +1255,9 @@
     Descriptor = (PUHCI_TRANSFER_DESCRIPTOR)OutDescriptor->NextElementDescriptor;
     while(Descriptor)
     {
+        // get data toggle
+        DataToggle = (Descriptor->Token >> TD_TOKEN_DATA_TOGGLE_SHIFT) &
0x01;
+
         if (Descriptor->Status & TD_ERROR_MASK)
         {
             //
@@ -1344,6 +1348,12 @@
     //
     m_DmaManager->Release(OutDescriptor, sizeof(UHCI_QUEUE_HEAD));
 
+    // is there an endpoint descriptor
+    if (m_EndpointDescriptor)
+    {
+        // invert last data toggle
+        m_EndpointDescriptor->DataToggle = (DataToggle == 0);
+    }
 }
 
 VOID