[Spice-devel] [PATCH] qxl-wddm-dod: prevent failure of power on transition

[Yuri Benditovich]

On return from S3 the driver may receive failure when
calls DxgkCbAcquirePostDisplayOwnership. In general the
driver is not expected to use this method when returns
from S3 but it is not simple to distinguish between S3
and S4 power transition (possible, due to hybrid sleep).
Current commit avoids returning error on power transition
and obtains best known default video mode info instead.

Signed-off-by: Yuri Benditovich <yuri.benditovich at daynix.com>
---
 qxldod/QxlDod.cpp | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/qxldod/QxlDod.cpp b/qxldod/QxlDod.cpp
index 525cdc3..95c0e97 100755
--- a/qxldod/QxlDod.cpp
+++ b/qxldod/QxlDod.cpp
@@ -5211,9 +5211,10 @@ NTSTATUS HwDeviceInterface::AcquireDisplayInfo(DXGK_DISPLAY_INFORMATION& DispInf
 
     if (!NT_SUCCESS(Status))
     {
-        DbgPrint(TRACE_LEVEL_ERROR, ("QxlDod::AcquireDisplayInfo failed with status 0x%X Width = %d\n",
+        DbgPrint(TRACE_LEVEL_WARNING, ("QxlDod::AcquireDisplayInfo failed with status 0x%X Width = %d\n",
             Status, DispInfo.Width));
-        return STATUS_UNSUCCESSFUL;
+        DispInfo.Width = 0;
+        Status = STATUS_SUCCESS;
     }
 
     if (DispInfo.Width == 0)
-- 
2.16.1.windows.4