centos man page for hsi_alloc_msg

HSI_ALLOC_MSG(9)					   High Speed Synchronous Serial					  HSI_ALLOC_MSG(9)

NAME
       hsi_alloc_msg - Allocate an HSI message

SYNOPSIS
       struct hsi_msg * hsi_alloc_msg(unsigned int nents, gfp_t flags);

ARGUMENTS
       nents
	   Number of memory entries

       flags
	   Kernel allocation flags

DESCRIPTION
       nents can be 0. This mainly makes sense for read transfer. In that case, HSI drivers will call the complete callback when there is data to
       be read without consuming it.

       Return NULL on failure or a pointer to an hsi_msg on success.

COPYRIGHT
Kernel Hackers Manual 3.10					     June 2014							  HSI_ALLOC_MSG(9)