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StorPortFreeMdl function (storport.h)

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The StorPortFreeMdl routine frees a memory descriptor list (MDL) describing non-paged pool memory.

Syntax

ULONG StorPortFreeMdl(
  [in] PVOID HwDeviceExtension,
  [in] PVOID Mdl
);

Parameters

[in] HwDeviceExtension

A pointer to the hardware device extension for the host bus adapter (HBA).

[in] Mdl

A pointer to the MDL to be freed.

Return value

StorPortFreeMdl returns one of the following status codes:

Return code Description
STOR_STATUS_NOT_IMPLEMENTED
 This function is not implemented on the active operating system.
STOR_STATUS_SUCCESS
 Indicates that the MDL was freed successfully.
STOR_STATUS_INVALID_PARAMETER
 The pointer to the MDL is NULL.
STOR_STATUS_INVALID_IRQL
 The call was made at an invalid IRQL.

Remarks

A miniport driver calls the StorPortFreeMdl routine to free the MDL that was allocated in a previous call to StorPortAllocateMdl.

Requirements

Requirement Value
Target Platform Universal
Header storport.h (include Storport.h)
IRQL <=DISPATCH_LEVEL
DDI compliance rules StorPortIrql(storport)

See also

StorPortAllocateMdl