[tkreuzer] 66825: [I8042PRT] Fix an off-by-one error in the SMTABLE string parsing code. Enable SYS_VERSION string for VirtualPc detection. Should hopefully fix VirtualPc mouse.

Author: tkreuzer
Date: Thu Mar 19 22:37:43 2015
New Revision: 66825

URL: http://svn.reactos.org/svn/reactos?rev=66825&view=rev
Log:
[I8042PRT]
Fix an off-by-one error in the SMTABLE string parsing code. Enable SYS_VERSION string for
VirtualPc detection. Should hopefully fix VirtualPc mouse.

Modified:
    trunk/reactos/drivers/input/i8042prt/hwhacks.c

Modified: trunk/reactos/drivers/input/i8042prt/hwhacks.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/drivers/input/i8042prt/hwh…
==============================================================================
--- trunk/reactos/drivers/input/i8042prt/hwhacks.c	[iso-8859-1] (original)
+++ trunk/reactos/drivers/input/i8042prt/hwhacks.c	[iso-8859-1] Thu Mar 19 22:37:43 2015
@@ -59,7 +59,7 @@
 //    { {{BOARD_VENDOR, "RIOWORKS"}, {BOARD_NAME, "HDAMB"},
{BOARD_VERSION, "Rev E"}}, FL_NOLOOP },
 //    { {{BOARD_VENDOR, "ASUSTeK Computer Inc."}, {BOARD_NAME,
"G1S"}, {BOARD_VERSION, "1.0"}}, FL_NOLOOP },
 
-    { {{SYS_VENDOR, "Microsoft Corporation"}, {SYS_PRODUCT, "Virtual
Machine"}, /*{SYS_VERSION, "VS2005R2"} */}, FL_INITHACK },
+    { {{SYS_VENDOR, "Microsoft Corporation"}, {SYS_PRODUCT, "Virtual
Machine"}, {SYS_VERSION, "VS2005R2"} }, FL_INITHACK },
     { {{SYS_VENDOR, "Dell Inc."}, {SYS_PRODUCT, "Latitude D530"}},
FL_INITHACK },
     { {{SYS_VENDOR, "Dell Inc."}, {SYS_PRODUCT, "Latitude D600"}},
FL_INITHACK },
 
@@ -77,15 +77,19 @@
     PCHAR String;
 
     StringIndex = ((PUCHAR)Header)[FieldOffset];
+    if (StringIndex == 0)
+    {
+        return NULL;
+    }
+
     String = (PCHAR)Header + Header->Length;
 
-    while (StringIndex != 0)
+    while (--StringIndex != 0)
     {
         while (*String != 0)
             String++;
 
         String++;
-        StringIndex--;
     }
 
     return String;