centos man page for spi_alloc_device

SPI_ALLOC_DEVICE(9)					  Serial Peripheral Interface (S				       SPI_ALLOC_DEVICE(9)

NAME
       spi_alloc_device - Allocate a new SPI device

SYNOPSIS
       struct spi_device * spi_alloc_device(struct spi_master * master);

ARGUMENTS
       master
	   Controller to which device is connected

CONTEXT
       can sleep

DESCRIPTION
       Allows a driver to allocate and initialize a spi_device without registering it immediately. This allows a driver to directly fill the
       spi_device with device parameters before calling spi_add_device on it.

       Caller is responsible to call spi_add_device on the returned spi_device structure to add it to the SPI master. If the caller needs to
       discard the spi_device without adding it, then it should call spi_dev_put on it.

       Returns a pointer to the new device, or NULL.

COPYRIGHT
Kernel Hackers Manual 3.10					     June 2014						       SPI_ALLOC_DEVICE(9)