/*++
@doc INTERNAL
@func VOID | AcquireLock | Cancel safe queue callback for locking
@parm IN PIO_CSQ | csq | Points to cancel safe queue.
@parm IN PKIRQL | Irql | Points to KIRQL for lock.
--*/
__drv_raisesIRQL(DISPATCH_LEVEL)
__drv_maxIRQL(DISPATCH_LEVEL)
VOID
HbtnAcquireLock(
__in PIO_CSQ csq,
__out __drv_out_deref(__drv_savesIRQL) PKIRQL Irql
)
{
PDEVICE_EXTENSION DevExt = GET_DEV_EXT(csq);
//
// Suppressing because the address below csq is valid since it's
// part of DEVICE_EXTENSION structure.
//
#pragma prefast(suppress: __WARNING_BUFFER_UNDERFLOW, "Underflow using expression 'DevExt->QueueLock'")
KeAcquireSpinLock(&DevExt->QueueLock, Irql);
} //HbtnAcquireLock
/*++
@doc INTERNAL
}
}
else
{
break;
}
pNextIrp = NULL;
pNextList = pNextList->Flink;
}
return pNextIrp;
}
__drv_raisesIRQL(DISPATCH_LEVEL)
__drv_maxIRQL(DISPATCH_LEVEL)
VOID DkCsqAcquireLock(__in PIO_CSQ pCsq, __out __drv_out_deref(__drv_savesIRQL) PKIRQL pKIrql)
{
PDEVICE_EXTENSION pDevExt = NULL;
pDevExt = CONTAINING_RECORD(pCsq, DEVICE_EXTENSION,
context.control.ioCsq);
ASSERT(pDevExt->deviceMagic == USBPCAP_MAGIC_CONTROL);
KeAcquireSpinLock(&pDevExt->context.control.csqSpinLock, pKIrql);
}
__drv_requiresIRQL(DISPATCH_LEVEL)
VOID DkCsqReleaseLock(__in PIO_CSQ pCsq, __in __drv_in(__drv_restoresIRQL) KIRQL kIrql)
{
PDEVICE_EXTENSION pDevExt = NULL;