[tkreuzer] 43739: [KDCOM] - Compare checksum after retreiving the full packet - simplify code

Author: tkreuzer
Date: Sun Oct 25 12:55:04 2009
New Revision: 43739

URL: http://svn.reactos.org/svn/reactos?rev=43739&view=rev
Log:
[KDCOM]
- Compare checksum after retreiving the full packet
- simplify code

Modified:
    branches/ros-amd64-bringup/reactos/drivers/base/kddll/kddll.c

Modified: branches/ros-amd64-bringup/reactos/drivers/base/kddll/kddll.c
URL:
http://svn.reactos.org/svn/reactos/branches/ros-amd64-bringup/reactos/drive…
==============================================================================
--- branches/ros-amd64-bringup/reactos/drivers/base/kddll/kddll.c [iso-8859-1] (original)
+++ branches/ros-amd64-bringup/reactos/drivers/base/kddll/kddll.c [iso-8859-1] Sun Oct 25
12:55:04 2009
@@ -307,6 +307,15 @@
             }
         }
 
+        /* We must receive a PACKET_TRAILING_BYTE now */
+        KdStatus = KdpReceiveBuffer(&Byte, sizeof(UCHAR));
+        if (KdStatus != KDP_PACKET_RECEIVED || Byte != PACKET_TRAILING_BYTE)
+        {
+            KDDBGPRINT("KdReceivePacket - wrong trailing byte (0x%x), status
0x%x\n", Byte, KdStatus);
+            KdpSendControlPacket(PACKET_TYPE_KD_RESEND, 0);
+            continue;
+        }
+
         /* Compare checksum */
         if (Packet.Checksum != Checksum)
         {
@@ -316,30 +325,19 @@
             continue;
         }
 
-        /* We must receive a PACKET_TRAILING_BYTE now */
-        KdStatus = KdpReceiveBuffer(&Byte, sizeof(UCHAR));
-        if (KdStatus != KDP_PACKET_RECEIVED || Byte != PACKET_TRAILING_BYTE)
-        {
-            KDDBGPRINT("KdReceivePacket - wrong trailing byte (0x%x), status
0x%x\n", Byte, KdStatus);
-            KdpSendControlPacket(PACKET_TYPE_KD_RESEND, 0);
-            continue;
-        }
-
-        /* Did we get the right packet type? */
-        if (PacketType != Packet.PacketType)
-        {
-            /* We received something different, ignore it. */
-            KDDBGPRINT("KdReceivePacket - wrong PacketType\n");
-            KdpSendControlPacket(PACKET_TYPE_KD_ACKNOWLEDGE, Packet.PacketId);
-            continue;
-        }
-
         /* Acknowledge the received packet */
         KdpSendControlPacket(PACKET_TYPE_KD_ACKNOWLEDGE, Packet.PacketId);
 
-        //KDDBGPRINT("KdReceivePacket - all ok\n");
-
-        return KDP_PACKET_RECEIVED;
+        /* Did we get the right packet type? */
+        if (PacketType == Packet.PacketType)
+        {
+            /* Yes, return success */
+            //KDDBGPRINT("KdReceivePacket - all ok\n");
+            return KDP_PACKET_RECEIVED;
+        }
+
+        /* We received something different, ignore it. */
+        KDDBGPRINT("KdReceivePacket - wrong PacketType\n");
     }
 
     return KDP_PACKET_RECEIVED;