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[NTOSKRNL]

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- Handle devices that are run by their own bus drivers
- This could be done a bit nicer but it works

svn path=/trunk/; revision=46431
This commit is contained in:
Cameron Gutman 2010-03-25 05:16:31 +00:00
parent 0bd14e99b4
commit 67c1ce90bd
1 changed files with 20 additions and 2 deletions
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22
reactos/ntoskrnl/io/pnpmgr/pnpmgr.c
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@ -1847,6 +1847,7 @@ IopActionConfigureChildServices(PDEVICE_NODE DeviceNode,
PUNICODE_STRING Service;
UNICODE_STRING ClassGUID;
NTSTATUS Status;
DEVICE_CAPABILITIES DeviceCaps;
DPRINT("IopActionConfigureChildServices(%p, %p)\n", DeviceNode, Context);
@ -1920,9 +1921,22 @@ IopActionConfigureChildServices(PDEVICE_NODE DeviceNode,
if (Service->Buffer == NULL)
{
IopDeviceNodeSetFlag(DeviceNode, DNF_DISABLED);
if (NT_SUCCESS(IopQueryDeviceCapabilities(DeviceNode, &DeviceCaps)) &&
DeviceCaps.RawDeviceOK)
{
DPRINT1("%wZ is using parent bus driver (%wZ)\n", &DeviceNode->InstancePath, &ParentDeviceNode->ServiceName);
if (ClassGUID.Length != 0)
DeviceNode->ServiceName.Length = 0;
DeviceNode->ServiceName.MaximumLength = ParentDeviceNode->ServiceName.MaximumLength;
DeviceNode->ServiceName.Buffer = ExAllocatePool(PagedPool, DeviceNode->ServiceName.MaximumLength);
if (!DeviceNode->ServiceName.Buffer)
return STATUS_SUCCESS;
RtlCopyUnicodeString(&DeviceNode->ServiceName, &ParentDeviceNode->ServiceName);
IopDeviceNodeSetFlag(DeviceNode, DNF_LEGACY_DRIVER);
}
else if (ClassGUID.Length != 0)
{
/* Device has a ClassGUID value, but no Service value.
* Suppose it is using the NULL driver, so state the
@ -1930,6 +1944,10 @@ IopActionConfigureChildServices(PDEVICE_NODE DeviceNode,
DPRINT1("%wZ is using NULL driver\n", &DeviceNode->InstancePath);
IopDeviceNodeSetFlag(DeviceNode, DNF_STARTED);
}
else
{
IopDeviceNodeSetFlag(DeviceNode, DNF_DISABLED);
}
return STATUS_SUCCESS;
}