usbd_status(9) - NetBSD Manual Pages

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USBD_STATUS(9)         NetBSD Kernel Developer's Manual         USBD_STATUS(9)


NAME

     usbd_status -- USB device drivers interface return status values


SYNOPSIS

     #include <dev/usb/usbdi.h>


DESCRIPTION

     This documents the full list of return values used by the generic USB
     code.  Interface-specific definitions will be given with interface.


RETURN VALUES

     Return values are split into two main groups: expected values and error
     values.

     There are only two expected values:

     USBD_NORMAL_COMPLETION
             The operation completed successfully.

     USBD_IN_PROGRESS
             The operation was successfully submitted, usually part of an
             asynchronous operation.

     These are the error values:

     USBD_PENDING_REQUESTS
             The requested operation could not be completed due to pending
             requests, usually from a pipe close operation.

     USBD_NOT_STARTED
             The initial status of a USB transfer.  See usbdi(9) for more
             details about USB transfers.

     USBD_INVAL
             Invalid arguments were supplied for the requested operation.

     USBD_NOMEM
             No memory could be allocated.

     USBD_CANCELLED
             The USB transfer has been cancelled, and not completed.

     USBD_BAD_ADDRESS
             The requested USB pipe could not be found.  See usbdi(9) for more
             details about USB pipes.

     USBD_IN_USE
             The requested operation could not be performed due to the device
             having active connections, such as USB audio device currently
             playing.

     USBD_NO_ADDR
             USB bus has reached its maximum limit of devices.

     USBD_SET_ADDR_FAILED
             Call to usbd_set_address() failed during new USB device discov-
             ery.

     USBD_NO_POWER
             New device has requested more power than is available.

     USBD_TOO_DEEP
             New USB Hub too deep from the root.

     USBD_IOERROR
             Non-specific error happened during IO.

     USBD_NOT_CONFIGURED
             USB device is not configured; it has no configuration descriptor.

     USBD_TIMEOUT
             Operation timed out.

     USBD_SHORT_XFER
             USB transfer succeeded but not all requested data was returned.

     USBD_STALLED
             USB controller has stalled (controller specific.)

     USBD_INTERRUPTED
             Process was interrupted by external means (such as a signal)
             while waiting for a transfer to complete.


SEE ALSO

     usb(4), usbdi(9)


HISTORY

     This usbd_status interface first appeared in NetBSD 1.4.

NetBSD 8.2                       May 12, 2012                       NetBSD 8.2