SPI_SIGNAL_UNKNOWN
spi_signalling(shost) = SPI_SIGNAL_UNKNOWN;
spi_signalling(shost) = SPI_SIGNAL_UNKNOWN;
type = SPI_SIGNAL_UNKNOWN;
{ SPI_SIGNAL_UNKNOWN, "unknown" },
return SPI_SIGNAL_UNKNOWN;
spi_signalling(shost) = SPI_SIGNAL_UNKNOWN;
if (type != SPI_SIGNAL_UNKNOWN)
type = SPI_SIGNAL_UNKNOWN;