centos man page for spi_busnum_to_master

SPI_BUSNUM_TO_MASTER(9) 				  Serial Peripheral Interface (S				   SPI_BUSNUM_TO_MASTER(9)

NAME
       spi_busnum_to_master - look up master associated with bus_num

SYNOPSIS
       struct spi_master * spi_busnum_to_master(u16 bus_num);

ARGUMENTS
       bus_num
	   the master's bus number

CONTEXT
       can sleep

DESCRIPTION
       This call may be used with devices that are registered after arch init time. It returns a refcounted pointer to the relevant spi_master
       (which the caller must release), or NULL if there is no such master registered.

COPYRIGHT
Kernel Hackers Manual 3.10					     June 2014						   SPI_BUSNUM_TO_MASTER(9)