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[PATCH 12/17] fdo: suppress warning in FdoQueryInterface


  • To: win-pv-devel@xxxxxxxxxxxxxxxxxxxx
  • From: Césaire Mounah <cesaire.mounah@xxxxxxxxxx>
  • Date: Mon, 5 Oct 2026 17:58:59 +0200
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  • Cc: Césaire Mounah <cesaire.mounah@xxxxxxxxxx>
  • Delivery-date: Mon, 05 Oct 2026 15:59:36 +0000
  • Feedback-id: default:8631fc262581453bbf619ec5b2062170:Sweego
  • List-id: Developer list for the Windows PV Drivers subproject <win-pv-devel.lists.xenproject.org>

IoCallDriver called by FdoQueryInterface is the one that fills
Interface indirectly, so to suppress the warning on Interface not
being touched by FdoQueryInterface we can just initialize it.

Signed-off-by: Césaire Mounah <cesaire.mounah@xxxxxxxxxx>
---
 src/xeniface/fdo.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/xeniface/fdo.c b/src/xeniface/fdo.c
index 0f2e747..7f9c471 100644
--- a/src/xeniface/fdo.c
+++ b/src/xeniface/fdo.c
@@ -2272,6 +2272,8 @@ FdoQueryInterface(
 
     ASSERT3U(KeGetCurrentIrql(), ==, PASSIVE_LEVEL);
 
+    RtlZeroMemory(Interface, Size);
+
     KeInitializeEvent(&Event, NotificationEvent, FALSE);
     RtlZeroMemory(&StatusBlock, sizeof(IO_STATUS_BLOCK));
 
-- 
2.55.0.windows.5



--
Césaire Mounah | Vates Windows Guest Tools Engineer

XCP-ng & Xen Orchestra - Vates solutions

web: https://vates.tech

 


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