From be204b41189ba545e4df340548be29e6028c3523 Mon Sep 17 00:00:00 2001
From: Bill Zissimopoulos <billziss@navimatics.com>
Date: Tue, 24 Nov 2015 14:11:49 -0800
Subject: [PATCH] sys: ioq

---
 src/sys/ioq.c | 17 ++++++++++-------
 1 file changed, 10 insertions(+), 7 deletions(-)

diff --git a/src/sys/ioq.c b/src/sys/ioq.c
index 700fa92d..384d9ec4 100644
--- a/src/sys/ioq.c
+++ b/src/sys/ioq.c
@@ -183,13 +183,16 @@ BOOLEAN FspIoqPostIrp(FSP_IOQ *Ioq, PIRP Irp)
 
 PIRP FspIoqNextPendingIrp(FSP_IOQ *Ioq, ULONG millis)
 {
-    NTSTATUS Result;
-    LARGE_INTEGER Timeout;
-    Timeout.QuadPart = (LONGLONG)millis * 10000;
-    Result = KeWaitForSingleObject(&Ioq->PendingIrpEvent, Executive, KernelMode, FALSE,
-        -1 == millis ? 0 : &Timeout);
-    if (!NT_SUCCESS(Result))
-        return 0;
+    if (0 != millis)
+    {
+        NTSTATUS Result;
+        LARGE_INTEGER Timeout;
+        Timeout.QuadPart = (LONGLONG)millis * 10000;
+        Result = KeWaitForSingleObject(&Ioq->PendingIrpEvent, Executive, KernelMode, FALSE,
+            -1 == millis ? 0 : &Timeout);
+        if (!NT_SUCCESS(Result))
+            return 0;
+    }
     return IoCsqRemoveNextIrp(&Ioq->PendingIoCsq, (PVOID)1);
 }