From d8fa27fec7ece71d828eb903773ddb11ad1bc4c3 Mon Sep 17 00:00:00 2001
From: Johannes Anderwald <johannes.anderwald@reactos.org>
Date: Thu, 13 Aug 2009 09:54:51 +0000
Subject: [PATCH] [KS] - Check if irp was allocated - Unimplement
 KsPinGetConnectedPinFileObject

svn path=/trunk/; revision=42649
---
 reactos/drivers/ksfilter/ks/api.c |  7 +++++++
 reactos/drivers/ksfilter/ks/pin.c | 14 ++++++++------
 2 files changed, 15 insertions(+), 6 deletions(-)

diff --git a/reactos/drivers/ksfilter/ks/api.c b/reactos/drivers/ksfilter/ks/api.c
index 0626e62f494..db6e1b89eeb 100644
--- a/reactos/drivers/ksfilter/ks/api.c
+++ b/reactos/drivers/ksfilter/ks/api.c
@@ -1148,6 +1148,13 @@ KsSynchronousIoControlDevice(
     /* create the irp */
     Irp =  IoBuildDeviceIoControlRequest(IoControl, DeviceObject, InBuffer, InSize, OutBuffer, OutSize, FALSE, &Event, &IoStatusBlock);
 
+    if (!Irp)
+    {
+        /* no memory to allocate the irp */
+        return STATUS_INSUFFICIENT_RESOURCES;
+    }
+
+
     /* HACK */
     IoStack = IoGetNextIrpStackLocation(Irp);
     IoStack->FileObject = FileObject;
diff --git a/reactos/drivers/ksfilter/ks/pin.c b/reactos/drivers/ksfilter/ks/pin.c
index 9f65572e931..7bb32b37c61 100644
--- a/reactos/drivers/ksfilter/ks/pin.c
+++ b/reactos/drivers/ksfilter/ks/pin.c
@@ -384,16 +384,14 @@ KsPinGetConnectedPinDeviceObject(
 }
 
 /*
-    @implemented
+    @unimplemented
 */
 PFILE_OBJECT
 NTAPI
 KsPinGetConnectedPinFileObject(
     IN PKSPIN Pin)
 {
-    IKsPinImpl * This = (IKsPinImpl*)CONTAINING_RECORD(Pin, IKsPinImpl, Pin);
-
-    return This->FileObject;
+    return NULL;
 }
 
 /*
@@ -1188,8 +1186,12 @@ KspCreatePin(
     This->ObjectHeader->Unknown = (PUNKNOWN)&This->lpVtbl;
     This->ObjectHeader->ObjectType = (PVOID)&This->Pin;
 
-    /*  now inform the driver to create a new pin */
-    Status = Descriptor->Dispatch->Create(&This->Pin, Irp);
+    /* does the driver have a pin dispatch */
+    if (Descriptor->Dispatch && Descriptor->Dispatch->Create)
+    {
+        /*  now inform the driver to create a new pin */
+        Status = Descriptor->Dispatch->Create(&This->Pin, Irp);
+    }
 
     if (!NT_SUCCESS(Status) && Status != STATUS_PENDING)
     {