Submit() public abstract method

public abstract Submit ( ) : ErrorCode
return ErrorCode
        internal static ErrorCode SyncTransfer(TransferContextBase transferContext,
                                               IntPtr buffer,
                                               int offset,
                                               int length,
                                               int timeout,
                                               out int transferLength)
        {
            if (ReferenceEquals(transferContext, null))
            {
                throw new NullReferenceException("Invalid transfer context.");
            }
            if (offset < 0)
            {
                throw new ArgumentException("must be >=0", "offset");
            }

            lock (transferContext)
            {
                transferLength = 0;

                int       transferred;
                ErrorCode ec;

                transferContext.Fill(buffer, offset, length, timeout);

                while (true)
                {
                    ec = transferContext.Submit();
                    if (ec == ErrorCode.IoEndpointGlobalCancelRedo)
                    {
                        continue;
                    }
                    if (ec != ErrorCode.Success)
                    {
                        return(ec);
                    }

                    ec = transferContext.Wait(out transferred);
                    if (ec == ErrorCode.IoEndpointGlobalCancelRedo)
                    {
                        continue;
                    }
                    if (ec != ErrorCode.Success)
                    {
                        return(ec);
                    }

                    transferLength += transferred;

                    if ((ec != ErrorCode.None || transferred != UsbEndpointBase.MaxReadWrite) ||
                        !transferContext.IncrementTransfer(transferred))
                    {
                        break;
                    }
                }

                return(ec);
            }
        }
        internal static ErrorCode SyncTransfer(TransferContextBase transferContext,
            IntPtr buffer,
            int offset,
            int length,
            int timeout,
            out int transferLength)
        {
            if (ReferenceEquals(transferContext, null)) throw new NullReferenceException("Invalid transfer context.");
            if (offset < 0) throw new ArgumentException("must be >=0", "offset");

            lock (transferContext)
            {
                transferLength = 0;

                int transferred;
                ErrorCode ec;

                transferContext.Fill(buffer, offset, length, timeout);

                while (true)
                {
                    ec = transferContext.Submit();
                    if (ec == ErrorCode.IoEndpointGlobalCancelRedo) continue;
                    if (ec != ErrorCode.Success) return ec;

                    ec = transferContext.Wait(out transferred);
                    if (ec == ErrorCode.IoEndpointGlobalCancelRedo) continue;
                    if (ec != ErrorCode.Success) return ec;

                    transferLength += transferred;

                    if ((ec != ErrorCode.None || transferred != UsbEndpointBase.MaxReadWrite) ||
                        !transferContext.IncrementTransfer(transferred))
                        break;
                }

                return ec;
            }
        }