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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.

RETURN

the SPI master structure on success, else NULL.

COPYRIGHT

January 2017 Kernel Hackers Manual 4.8.