[janderwald] 57826: [USBCCGP] - Add debugging function to analyze configuration descriptor - Remove assert CORE-6574

Author: janderwald
Date: Sat Dec  8 19:52:10 2012
New Revision: 57826

URL: http://svn.reactos.org/svn/reactos?rev=57826&view=rev
Log:
[USBCCGP]
- Add debugging function to analyze configuration descriptor
- Remove assert
CORE-6574

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 Dec  8 19:52:10 2012
@@ -268,6 +268,41 @@
     return STATUS_SUCCESS;
 }
 
+VOID
+DumpFullConfigurationDescriptor(
+    IN PFDO_DEVICE_EXTENSION FDODeviceExtension,
+    IN PUSB_CONFIGURATION_DESCRIPTOR ConfigurationDescriptor)
+{
+    PUSB_COMMON_DESCRIPTOR Descriptor;
+
+    Descriptor = (PUSB_COMMON_DESCRIPTOR)ConfigurationDescriptor;
+
+    DbgPrint("Bogus ConfigurationDescriptor Found\n");
+    DbgPrint("InterfaceCount %x\n",
ConfigurationDescriptor->bNumInterfaces);
+
+    do
+    {
+        if (((ULONG_PTR)Descriptor + Descriptor->bLength) <=
((ULONG_PTR)ConfigurationDescriptor + ConfigurationDescriptor->wTotalLength))
+            break;
+
+        DbgPrint("Descriptor Type %x Length %lu Offset %lu\n",
Descriptor->bDescriptorType, Descriptor->bLength, ((ULONG_PTR)Descriptor -
(ULONG_PTR)ConfigurationDescriptor));
+
+        // check for invalid descriptors
+        if (!Descriptor->bLength) 
+        {
+            DbgPrint("Bogus Descriptor!!!\n");
+            break;
+        }
+
+        // advance to next descriptor
+        Descriptor = (PUSB_COMMON_DESCRIPTOR)((ULONG_PTR)Descriptor +
Descriptor->bLength);
+
+    }while(TRUE);
+
+
+}
+
+
 NTSTATUS
 NTAPI
 USBCCGP_ScanConfigurationDescriptor(
@@ -309,7 +344,6 @@
         // parse configuration descriptor
         //
         InterfaceDescriptor =
USBD_ParseConfigurationDescriptorEx(ConfigurationDescriptor, ConfigurationDescriptor,
InterfaceIndex, -1, -1, -1, -1);
-        ASSERT(InterfaceDescriptor);
         if (InterfaceDescriptor)
         {
             //
@@ -319,6 +353,17 @@
             FDODeviceExtension->InterfaceListCount++;
             CurrentPosition = (PVOID)((ULONG_PTR)InterfaceDescriptor +
InterfaceDescriptor->bLength);
         }
+        else
+        {
+            DumpFullConfigurationDescriptor(FDODeviceExtension,
ConfigurationDescriptor);
+
+            //
+            // see issue
+            // CORE-6574 Test 3 (USB Web Cam)
+            //
+            if (FDODeviceExtension->DeviceDescriptor &&
FDODeviceExtension->DeviceDescriptor->idVendor == 0x0458 &&
FDODeviceExtension->DeviceDescriptor->idProduct == 0x705f)
+                ASSERT(FALSE);
+        }
 
         //
         // move to next interface