spi_sync_transfer (9)

int spi_sync_transfer(struct spi_device * spi, struct spi_transfer * xfers, unsigned int num_xfers);

spi

device with which data will be exchanged

xfers

An array of spi_transfers

num_xfers

Number of items in the xfer array

can sleep

Does a synchronous SPI data transfer of the given spi_transfer array.

For more specific semantics see spi_sync.

It returns zero on success, else a negative error code.