diff --git a/reactos/drivers/video/videoprt/dma.c b/reactos/drivers/video/videoprt/dma.c
index 546c9d75e52..daa7505c8c5 100644
--- a/reactos/drivers/video/videoprt/dma.c
+++ b/reactos/drivers/video/videoprt/dma.c
@@ -75,7 +75,7 @@ VideoPortPutDmaAdapter(
    IN PVOID HwDeviceExtension,
    IN PVP_DMA_ADAPTER VpDmaAdapter)
 {
-   DPRINT("VideoPortPutDmaAdapter: Unimplemented.\n");
+   HalPutDmaAdapter((PADAPTER_OBJECT)VpDmaAdapter);
 }
 
 /*
@@ -117,3 +117,28 @@ VideoPortGetDmaAdapter(
    DPRINT("Adapter %X\n", Adapter);
    return(Adapter);
 }
+
+/*
+ * @implemented
+ */
+VOID NTAPI
+VideoPortFreeCommonBuffer( IN PVOID HwDeviceExtension,
+                                 IN ULONG  Length,
+                                 IN PVOID  VirtualAddress,
+                                 IN PHYSICAL_ADDRESS  LogicalAddress,
+                                 IN BOOLEAN  CacheEnabled)
+{
+   DEVICE_DESCRIPTION DeviceDescription;
+   PVP_DMA_ADAPTER VpDmaAdapter;
+
+   VpDmaAdapter = VideoPortGetDmaAdapter(
+                    HwDeviceExtension, 
+                    (PVP_DEVICE_DESCRIPTION)&DeviceDescription);
+
+   HalFreeCommonBuffer(
+      (PADAPTER_OBJECT)VpDmaAdapter,
+      Length,
+      LogicalAddress,
+      VirtualAddress,
+      CacheEnabled);
+}
diff --git a/reactos/drivers/video/videoprt/videoprt.def b/reactos/drivers/video/videoprt/videoprt.def
index 037160b7e2f..413a3e0bae5 100644
--- a/reactos/drivers/video/videoprt/videoprt.def
+++ b/reactos/drivers/video/videoprt/videoprt.def
@@ -27,7 +27,7 @@ VideoPortDisableInterrupt@4
 VideoPortEnableInterrupt@4
 VideoPortEnumerateChildren@8
 ;VideoPortFlushRegistry
-;VideoPortFreeCommonBuffer
+VideoPortFreeCommonBuffer
 VideoPortFreeDeviceBase@8
 VideoPortFreePool@8
 VideoPortGetAccessRanges@32