[cgutman] 56204: - Fix device manager view by connection in ACPI mode [NTOSKRNL] - Bugcheck if a driver reports a PDO with a non-unique instance ID [ACPI] - Check that we're not reporting the same ...

Author: cgutman
Date: Wed Mar 21 14:35:52 2012
New Revision: 56204

URL: http://svn.reactos.org/svn/reactos?rev=56204&view=rev
Log:
- Fix device manager view by connection in ACPI mode
[NTOSKRNL]
- Bugcheck if a driver reports a PDO with a non-unique instance ID
[ACPI]
- Check that we're not reporting the same device multiple times

Modified:
    trunk/reactos/drivers/bus/acpi/acpienum.c
    trunk/reactos/ntoskrnl/io/pnpmgr/plugplay.c
    trunk/reactos/ntoskrnl/io/pnpmgr/pnpmgr.c

Modified: trunk/reactos/drivers/bus/acpi/acpienum.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/drivers/bus/acpi/acpienum.…
==============================================================================
--- trunk/reactos/drivers/bus/acpi/acpienum.c [iso-8859-1] (original)
+++ trunk/reactos/drivers/bus/acpi/acpienum.c [iso-8859-1] Wed Mar 21 14:35:52 2012
@@ -45,10 +45,38 @@
     for (entry = FdoData->ListOfPDOs.Flink;
         entry != &FdoData->ListOfPDOs; entry = entry->Flink)
     {
-            pdoData = CONTAINING_RECORD (entry, PDO_DEVICE_DATA, Link);
-            //dont duplicate devices
-            if(pdoData->AcpiHandle == Device->handle)
+        struct acpi_device *CurrentDevice;
+
+        pdoData = CONTAINING_RECORD (entry, PDO_DEVICE_DATA, Link);
+
+        //dont duplicate devices
+        if (pdoData->AcpiHandle == Device->handle)
+            return STATUS_SUCCESS;
+
+        //check everything but fixed feature devices
+        if (pdoData->AcpiHandle)
+            acpi_bus_get_device(pdoData->AcpiHandle, &CurrentDevice);
+        else
+            continue;
+
+        //check if the HID matches
+        if (strstr(Device->pnp.hardware_id, CurrentDevice->pnp.hardware_id))
+        {
+            //check if UID exists for both and matches
+            if (Device->flags.unique_id && CurrentDevice->flags.unique_id
&&
+                strstr(Device->pnp.unique_id, CurrentDevice->pnp.unique_id))
+            {
+                /* We have a UID on both but they're the same so we have to ignore it
*/
+                DPRINT1("Detected duplicate device: %hs %hs\n",
Device->pnp.hardware_id, Device->pnp.unique_id);
                 return STATUS_SUCCESS;
+            }
+            else if (!Device->flags.unique_id &&
!CurrentDevice->flags.unique_id)
+            {
+                /* No UID so we can only legally have 1 of these devices */
+                DPRINT1("Detected duplicate device: %hs\n",
Device->pnp.hardware_id);
+                return STATUS_SUCCESS;
+            }
+        }
     }
 
     DPRINT("Exposing PDO\n"

Modified: trunk/reactos/ntoskrnl/io/pnpmgr/plugplay.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/ntoskrnl/io/pnpmgr/plugpla…
==============================================================================
--- trunk/reactos/ntoskrnl/io/pnpmgr/plugplay.c [iso-8859-1] (original)
+++ trunk/reactos/ntoskrnl/io/pnpmgr/plugplay.c [iso-8859-1] Wed Mar 21 14:35:52 2012
@@ -141,7 +141,7 @@
 }
 
 
-static PDEVICE_OBJECT
+PDEVICE_OBJECT
 IopGetDeviceObjectFromDeviceInstance(PUNICODE_STRING DeviceInstance)
 {
     if (IopRootDeviceNode == NULL)

Modified: trunk/reactos/ntoskrnl/io/pnpmgr/pnpmgr.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/ntoskrnl/io/pnpmgr/pnpmgr.…
==============================================================================
--- trunk/reactos/ntoskrnl/io/pnpmgr/pnpmgr.c [iso-8859-1] (original)
+++ trunk/reactos/ntoskrnl/io/pnpmgr/pnpmgr.c [iso-8859-1] Wed Mar 21 14:35:52 2012
@@ -49,6 +49,9 @@
 
 NTSTATUS
 IopPrepareDeviceForRemoval(PDEVICE_OBJECT DeviceObject, BOOLEAN Force);
+
+PDEVICE_OBJECT
+IopGetDeviceObjectFromDeviceInstance(PUNICODE_STRING DeviceInstance);
 
 PDEVICE_NODE
 FASTCALL
@@ -1850,7 +1853,9 @@
    HANDLE InstanceKey = NULL;
    UNICODE_STRING ValueName;
    UNICODE_STRING ParentIdPrefix = { 0, 0, NULL };
+   UNICODE_STRING InstancePathU;
    DEVICE_CAPABILITIES DeviceCapabilities;
+   PDEVICE_OBJECT OldDeviceObject;
 
    DPRINT("IopActionInterrogateDeviceStack(%p, %p)\n", DeviceNode, Context);
    DPRINT("PDO 0x%p\n", DeviceNode->PhysicalDeviceObject);
@@ -1991,11 +1996,25 @@
    }
    RtlFreeUnicodeString(&ParentIdPrefix);
 
-   if (!RtlCreateUnicodeString(&DeviceNode->InstancePath, InstancePath))
+   if (!RtlCreateUnicodeString(&InstancePathU, InstancePath))
    {
       DPRINT("No resources\n");
       /* FIXME: Cleanup and disable device */
    }
+
+   /* Verify that this is not a duplicate */
+   OldDeviceObject = IopGetDeviceObjectFromDeviceInstance(&InstancePathU);
+   if (OldDeviceObject != NULL)
+   {
+       DPRINT1("Duplicate device instance '%wZ'\n",
&InstancePathU);
+       KeBugCheckEx(PNP_DETECTED_FATAL_ERROR,
+                    0x01,
+                    (ULONG_PTR)DeviceNode->PhysicalDeviceObject,
+                    (ULONG_PTR)OldDeviceObject,
+                    0);
+   }
+
+   DeviceNode->InstancePath = InstancePathU;
 
    DPRINT("InstancePath is %S\n", DeviceNode->InstancePath.Buffer);