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- FS Devices don't need a device queue, optimize the call away.

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svn path=/trunk/; revision=17085
This commit is contained in:
Alex Ionescu 2005-08-05 21:25:52 +00:00
parent 6477828cdd
commit 1eb8e4cde0
1 changed files with 14 additions and 1 deletions
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15
reactos/ntoskrnl/io/device.c
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@ -545,7 +545,20 @@ IoCreateDevice(PDRIVER_OBJECT DriverObject,
}
/* Create the Device Queue */
KeInitializeDeviceQueue(&CreatedDeviceObject->DeviceQueue);
if (CreatedDeviceObject->DeviceType == FILE_DEVICE_DISK_FILE_SYSTEM ||
CreatedDeviceObject->DeviceType == FILE_DEVICE_FILE_SYSTEM ||
CreatedDeviceObject->DeviceType == FILE_DEVICE_CD_ROM_FILE_SYSTEM ||
CreatedDeviceObject->DeviceType == FILE_DEVICE_NETWORK_FILE_SYSTEM ||
CreatedDeviceObject->DeviceType == FILE_DEVICE_TAPE_FILE_SYSTEM)
{
/* Simple FS Devices, they don't need a real Device Queue */
InitializeListHead(&CreatedDeviceObject->Queue.ListEntry);
}
else
{
/* An actual Device, initialize its DQ */
KeInitializeDeviceQueue(&CreatedDeviceObject->DeviceQueue);
}
/* Insert the Object */
Status = ObInsertObject(CreatedDeviceObject,