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WdfInterruptEnable function (wdfinterrupt.h)

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[Applies to KMDF and UMDF]

The WdfInterruptEnable method enables a specified device interrupt by calling the driver's EvtInterruptEnable callback function.

Syntax

void WdfInterruptEnable(
  [in] WDFINTERRUPT Interrupt
);

Parameters

[in] Interrupt

A handle to a framework interrupt object.

Return value

None

Remarks

A bug check occurs if the driver supplies an invalid object handle.

Most framework-based drivers don't need to call WdfInterruptEnable, because the framework calls the driver's EvtInterruptEnable callback function each time the device enters its working (D0) state.

For passive-level interrupt objects, the framework calls WdfInterruptEnable at PASSIVE_LEVEL.

Do not call WdfInterruptEnable from an arbitrary thread context, such as a request handler.

For more information about handling interrupts in framework-based drivers, see Handling Hardware Interrupts.

Examples

The following code example enables the device interrupt that is associated with a specified interrupt object.

WdfInterruptEnable(Interrupt);

Requirements

Requirement Value
Target Platform Universal
Minimum KMDF version 1.0
Minimum UMDF version 2.0
Header wdfinterrupt.h (include Wdf.h)
Library Wdf01000.sys (KMDF); WUDFx02000.dll (UMDF)
IRQL PASSIVE_LEVEL
DDI compliance rules DriverCreate(kmdf), KmdfIrql(kmdf), KmdfIrql2(kmdf), KmdfIrqlExplicit(kmdf)

See also

EvtInterruptEnable

WdfInterruptDisable