[janderwald] 66483: [USBCCGP] - reset interface count before loop - add extra checks

Author: janderwald
Date: Sat Feb 28 09:48:16 2015
New Revision: 66483

URL: http://svn.reactos.org/svn/reactos?rev=66483&view=rev
Log:
[USBCCGP]
- reset interface count before loop
- add extra checks

Modified:
    trunk/reactos/drivers/usb/usbccgp/descriptor.c

Modified: trunk/reactos/drivers/usb/usbccgp/descriptor.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/drivers/usb/usbccgp/descri…
==============================================================================
--- trunk/reactos/drivers/usb/usbccgp/descriptor.c	[iso-8859-1] (original)
+++ trunk/reactos/drivers/usb/usbccgp/descriptor.c	[iso-8859-1] Sat Feb 28 09:48:16 2015
@@ -326,6 +326,11 @@
     // count all interface descriptors
     //
     DescriptorCount = ConfigurationDescriptor->bNumInterfaces;
+    if (DescriptorCount == 0)
+    {
+        DPRINT1("[USBCCGP] DescriptorCount is zero\n");
+        return STATUS_INVALID_PARAMETER;
+    }
 
     //
     // allocate array holding the interface descriptors
@@ -338,6 +343,11 @@
         //
         return STATUS_INSUFFICIENT_RESOURCES;
     }
+
+    //
+    // reset interface list count
+    //
+    FDODeviceExtension->InterfaceListCount = 0;
 
     do
     {
@@ -350,6 +360,7 @@
             //
             // store in interface list
             //
+            ASSERT(FDODeviceExtension->InterfaceListCount < DescriptorCount);
            
FDODeviceExtension->InterfaceList[FDODeviceExtension->InterfaceListCount].InterfaceDescriptor
= InterfaceDescriptor;
             FDODeviceExtension->InterfaceListCount++;
         }