Note
Access to this page requires authorization. You can try signing in or changing directories.
Access to this page requires authorization. You can try changing directories.
The IoReleaseCancelSpinLock routine releases the cancel spin lock after the driver has changed the cancelable state of an IRP.
Syntax
void IoReleaseCancelSpinLock(
KIRQL Irql
);
Parameters
Irql
[in] The IRQL to be restored. The caller obtained this IRQL in the previous call to the IoAcquireCancelSpinLock routine.
Return value
None
Remarks
This routine is a reciprocal to IoAcquireCancelSpinLock.
This routine also releases the cancel spin lock from the driver's Cancel routine.
The holder of the cancel spin lock runs at IRQL = DISPATCH_LEVEL after calling IoAcquireCancelSpinLock. IoReleaseCancelSpinLock restores the original IRQL of the caller.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows 2000 |
| Header | wdm.h |
| IRQL | DISPATCH_LEVEL |
| DDI compliance rules | CancelSpinLock(storport), CancelSpinLock(wdm), CancelSpinlockRelease(wdm), HwStorPortProhibitedDDIs(storport), SpinLockSafe(storport), SpinLockSafe(wdm) |