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Protocols — USB Support
Version 1.10 12/01/02 14-29
Description
This function is used to retrieve the status of the root hub port specified by PortNumber.
EFI_USB_PORT_STATUS
describes the port status of a specified USB port. This data structure is
designed to be common to both a USB root hub port and a USB hub port.
The number of root hub ports attached to the USB host controller can be determined with the
function GetRootHubPortNumber()
. If PortNumber is greater than or equal to the number
of ports returned by GetRootHubPortNumber(), then EFI_INVALID_PARAMETER is
returned. Otherwise, the status of the USB root hub port is returned in PortStatus, and
EFI_SUCCESS is returned.
Status Codes Returned
EFI_SUCCESS
The status of the USB root hub port specified by
PortNumber
was returned in
PortStatus.
EFI_INVALID_PARAMETER
PortNumber is invalid.