From bf74f101c258665268a428e9a788bc8e68c17b3c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Herm=C3=A8s=20B=C3=A9lusca-Ma=C3=AFto?=
 <hermes.belusca-maito@reactos.org>
Date: Mon, 25 Nov 2019 00:32:28 +0100
Subject: [PATCH] [VIDEOPRT] Use ExFreePoolWithTag() + Add some ASSERTs.

---
 win32ss/drivers/videoprt/agp.c   | 10 +++++-----
 win32ss/drivers/videoprt/event.c |  4 +++-
 2 files changed, 8 insertions(+), 6 deletions(-)

diff --git a/win32ss/drivers/videoprt/agp.c b/win32ss/drivers/videoprt/agp.c
index e149a201375..2ad191e088b 100644
--- a/win32ss/drivers/videoprt/agp.c
+++ b/win32ss/drivers/videoprt/agp.c
@@ -176,7 +176,7 @@ IntAgpReleasePhysical(
    }
 
    /* Free resources */
-   ExFreePool(AgpMapping);
+   ExFreePoolWithTag(AgpMapping, TAG_VIDEO_PORT);
 }
 
 PHYSICAL_ADDRESS NTAPI
@@ -230,7 +230,7 @@ IntAgpReservePhysical(
                                            &AgpMapping->PhysicalAddress);
    if (!NT_SUCCESS(Status) || AgpMapping->MapHandle == NULL)
    {
-      ExFreePool(AgpMapping);
+      ExFreePoolWithTag(AgpMapping, TAG_VIDEO_PORT);
       WARN_(VIDEOPRT, "Warning: AgpBusInterface->ReserveMemory failed (Status = 0x%x)\n",
               Status);
       return ZeroAddress;
@@ -412,7 +412,7 @@ IntAgpReleaseVirtual(
    }
 
    /* Free resources */
-   ExFreePool(VirtualMapping);
+   ExFreePoolWithTag(VirtualMapping, TAG_VIDEO_PORT);
 }
 
 PVOID NTAPI
@@ -447,7 +447,7 @@ IntAgpReserveVirtual(
    if (ProcessHandle == NULL)
    {
       /* FIXME: What to do in this case? */
-      ExFreePool(VirtualMapping);
+      ExFreePoolWithTag(VirtualMapping, TAG_VIDEO_PORT);
       return NULL;
    }
    else /* ProcessHandle != NULL */
@@ -459,7 +459,7 @@ IntAgpReserveVirtual(
                                        MEM_RESERVE, PAGE_NOACCESS);
       if (!NT_SUCCESS(Status))
       {
-         ExFreePool(VirtualMapping);
+         ExFreePoolWithTag(VirtualMapping, TAG_VIDEO_PORT);
          WARN_(VIDEOPRT, "ZwAllocateVirtualMemory() failed: Status = 0x%x\n", Status);
          return NULL;
       }
diff --git a/win32ss/drivers/videoprt/event.c b/win32ss/drivers/videoprt/event.c
index 16153397f8a..77f48817676 100644
--- a/win32ss/drivers/videoprt/event.c
+++ b/win32ss/drivers/videoprt/event.c
@@ -78,7 +78,7 @@ VideoPortDeleteEvent(
     if (!Event->pKEvent) return ERROR_INVALID_PARAMETER;
 
     /* Free storage */
-    ExFreePool(Event);
+    ExFreePoolWithTag(Event, TAG_VIDEO_PORT);
 
     /* Indicate success */
     return NO_ERROR;
@@ -93,6 +93,7 @@ VideoPortSetEvent(
     _In_ PVOID HwDeviceExtension,
     _In_ PEVENT Event)
 {
+    ASSERT(Event);
     return KeSetEvent(Event->pKEvent, IO_NO_INCREMENT, FALSE);
 }
 
@@ -105,6 +106,7 @@ VideoPortClearEvent(
     _In_ PVOID HwDeviceExtension,
     _In_ PEVENT Event)
 {
+    ASSERT(Event);
     KeClearEvent(Event->pKEvent);
 }