/**
* __spi_register_driver - register a SPI driver
+ * @owner: owner module of the driver to register
* @sdrv: the driver to register
* Context: can sleep
*
* Set transfer tx_nbits and rx_nbits as single transfer default
* (SPI_NBITS_SINGLE) if it is not set for this transfer.
*/
+ message->frame_length = 0;
list_for_each_entry(xfer, &message->transfers, transfer_list) {
message->frame_length += xfer->len;
if (!xfer->bits_per_word)