SPI_READ(9)                       Serial Peripheral Interface (S                      SPI_READ(9)



NAME
       spi_read - SPI synchronous read

SYNOPSIS
       int spi_read(struct spi_device * spi, void * buf, size_t len);

ARGUMENTS
       spi
           device from which data will be read

       buf
           data buffer

       len
           data buffer size

CONTEXT
       can sleep

DESCRIPTION
       This function reads the buffer buf. Callable only from contexts that can sleep.

RETURN
       zero on success, else a negative error code.

COPYRIGHT
Kernel Hackers Manual 4.8.                 January 2017                               SPI_READ(9)