90 lines
1.6 KiB
C
90 lines
1.6 KiB
C
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/*++
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Copyright (c) 1998 Microsoft Corporation
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Module Name:
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rdwr.c
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Abstract:
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This module contains the code for a serial imaging devices driver.
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I/O control routine
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Author:
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Vlad Sadovsky vlads 10-April-1998
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Environment:
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Kernel mode
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Revision History :
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vlads 04/10/1998 Created first draft
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--*/
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#include "serscan.h"
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#include "serlog.h"
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#if DBG
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extern ULONG SerScanDebugLevel;
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#endif
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#ifdef ALLOC_PRAGMA
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#pragma alloc_text(PAGE, SerScanDeviceControl)
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#endif
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NTSTATUS
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SerScanDeviceControl(
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IN PDEVICE_OBJECT DeviceObject,
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IN PIRP Irp
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)
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/*++
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Routine Description:
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This routine is the dispatch for device control requests.
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Arguments:
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DeviceObject - Supplies the device object.
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Irp - Supplies the I/O request packet.
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Return Value:
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STATUS_SUCCESS - Success.
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STATUS_PENDING - Request pending.
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STATUS_BUFFER_TOO_SMALL - Buffer too small.
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STATUS_INVALID_PARAMETER - Invalid io control request.
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--*/
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{
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NTSTATUS Status;
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PDEVICE_EXTENSION Extension;
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PAGED_CODE();
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Extension = DeviceObject->DeviceExtension;
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//
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// Call down to the parent but don't wait...we'll get an IoCompletion callback.
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//
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Status = SerScanCallParent(Extension,
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Irp,
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NO_WAIT,
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SerScanCompleteIrp);
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DebugDump(SERIRPPATH,
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("SerScan: [Cleanup] After CallParent Status = %x\n",
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Status));
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return Status;
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}
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