NdisFreeSpinLock function (ndis.h)

Article
02/22/2024

The NdisFreeSpinLock function releases a spin lock initialized in a preceding call to the NdisAllocateSpinLock functioin.

Syntax

void NdisFreeSpinLock(
  [in] PNDIS_SPIN_LOCK SpinLock
);

Parameters

[in] SpinLock

Pointer to the spin lock to be deinitialized.

Return value

None

Remarks

If the caller of NdisFreeSpinLock needs to use the spin lock again, it must call NdisAllocateSpinLock before passing that spin lock pointer to any of the Ndis..SpinLock or NdisInterlockedXxx functions.

Callers of NdisFreeSpinLock can run at any IRQL. Usually, this function is not called until a driver is unloading.

Requirements

Requirement	Value
Minimum supported client	Supported for NDIS 6.0 and NDIS 5.1 drivers (see NdisFreeSpinLock (NDIS 5.1)) in Windows Vista. Supported for NDIS 5.1 drivers (see NdisFreeSpinLock (NDIS 5.1)) in Windows XP.
Target Platform	Universal
Header	ndis.h (include Ndis.h)
Library	Ndis.lib
IRQL	Any level (see Remarks section)