EFI_USBFN_IO_PROTOCOL.AbortTransfer

Article
03/23/2023

The AbortTransfer function aborts transfer on the specified endpoint.

Syntax

typedef
EFI_STATUS
(EFIAPI * EFI_USBFN_IO_ABORT_TRANSFER) (
  IN EFI_USBFN_IO_PROTOCOL        *This,
  IN UINT8                        EndpointIndex,
  IN EFI_USBFN_ENDPOINT_DIRECTION Direction
  );

Parameters

This
A pointer to the EFI_USBFN_IO_PROTOCOL instance

EndpointIndex
Indicates the endpoint on which the ongoing transfer needs to be canceled.

Direction
Direction of the endpoint. For more information see EFI_USBFN_ENDPOINT_DIRECTION.

Return values

Returns one of the following status codes.

Status code	Description
EFI_SUCCESS	The function returned successfully.
EFI_INVALID_PARAMETER	A parameter is invalid.
EFI_DEVICE_ERROR	The physical device reported an error.
EFI_NOT_READY	The physical device is busy or not ready to process this request.

Remarks

This function fails with EFI_INVALID_PARAMETER if the specified direction is incorrect for the endpoint.

Requirements

Header: User generated

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