[hbelusca] 70404: [NTOS:KDBG]: Sync back the code that I copied in FreeLdr (r70403) for COM port selection.

Author: hbelusca
Date: Sun Dec 20 02:53:30 2015
New Revision: 70404

URL: http://svn.reactos.org/svn/reactos?rev=70404&view=rev
Log:
[NTOS:KDBG]: Sync back the code that I copied in FreeLdr (r70403) for COM port selection.

Modified:
    trunk/reactos/ntoskrnl/kd/i386/kdbg.c

Modified: trunk/reactos/ntoskrnl/kd/i386/kdbg.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/ntoskrnl/kd/i386/kdbg.c?re…
==============================================================================
--- trunk/reactos/ntoskrnl/kd/i386/kdbg.c	[iso-8859-1] (original)
+++ trunk/reactos/ntoskrnl/kd/i386/kdbg.c	[iso-8859-1] Sun Dec 20 02:53:30 2015
@@ -28,13 +28,14 @@
 #error Unknown architecture
 #endif
 
+#define MAX_COM_PORTS   (sizeof(BaseArray) / sizeof(BaseArray[0]) - 1)
+
 /* STATIC VARIABLES ***********************************************************/
 
 // static CPPORT DefaultPort = {0, 0, 0};
 
 /* The COM port must only be initialized once! */
 // static BOOLEAN PortInitialized = FALSE;
-
 
 /* REACTOS FUNCTIONS **********************************************************/
 
@@ -58,7 +59,6 @@
     /*
      * Find the port if needed
      */
-    SIZE_T i;
 
     if (!PortInitialized)
     {
@@ -72,12 +72,11 @@
              * If we reach the first element of the list, the invalid COM port,
              * then it means that no valid port was found.
              */
-            for (i = sizeof(BaseArray) / sizeof(BaseArray[0]) - 1; i > 0; i--)
+            for (ComPortNumber = MAX_COM_PORTS; ComPortNumber > 0; ComPortNumber--)
             {
-                if (CpDoesPortExist(UlongToPtr(BaseArray[i])))
+                if (CpDoesPortExist(UlongToPtr(BaseArray[ComPortNumber])))
                 {
-                    PortInformation->Address = DefaultPort.Address = BaseArray[i];
-                    ComPortNumber = (ULONG)i;
+                    PortInformation->Address = DefaultPort.Address =
BaseArray[ComPortNumber];
                     break;
                 }
             }