Bewerken

Delen via

EFI_USBFN_IO_PROTOCOL.DetectPort

  • Artikel

The DetectPort function returns the type of device attached to the USB port.

Syntax

typedef
EFI_STATUS
(EFIAPI * EFI_USBFN_IO_DETECT_PORT) (
  IN EFI_USBFN_IO_PROTOCOL   *This,
  OUT EFI_USBFN_PORT_TYPE    *PortType
  );

Parameters

This
A pointer to the EFI_USBFN_IO_PROTOCOL instance.

PortType
A EFI_USBFN_PORT_TYPE enumeration that indicates the USB port type.

Return values

The function 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.

Requirements

Header: User generated