From 115477d9b33a9fed5cf6eafe5f98e3a15c517541 Mon Sep 17 00:00:00 2001
From: "yuri.benditovich@daynix.com" <yuri.benditovich@daynix.com>
Date: Thu, 25 May 2017 16:06:38 +0300
Subject: [PATCH] qxl-wddm-dod: Prevent potential memory leak in class driver

In case the device initializes 4 memory bars, the driver maps
physical memory of bar 4 and never unmaps it. Fixing it by
immediate unmap of unused memory bars.

Signed-off-by: Yuri Benditovich <yuri.benditovich@daynix.com>
Acked-by: Frediano Ziglio <fziglio@redhat.com>
---
 qxldod/QxlDod.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/qxldod/QxlDod.cpp b/qxldod/QxlDod.cpp
index bb71f22..6b0cc5e 100755
--- a/qxldod/QxlDod.cpp
+++ b/qxldod/QxlDod.cpp
@@ -3430,6 +3430,8 @@ NTSTATUS QxlDevice::HWInit(PCM_RESOURCE_LIST pResList, DXGK_DISPLAY_INFORMATION*
                             pci_range = QXL_PCI_RANGES;
                             break;
                         default:
+                            DbgPrint(TRACE_LEVEL_WARNING, ("Unused memory range found\n"));
+                            pDxgkInterface->DxgkCbUnmapMemory(pDxgkInterface->DeviceHandle, MemBase);
                             break;
                         }
                     }