centos man page for cache_firmware

CACHE_FIRMWARE(9)					   Device drivers infrastructure					 CACHE_FIRMWARE(9)

NAME
       cache_firmware - cache one firmware image in kernel memory space

SYNOPSIS
       int cache_firmware(const char * fw_name);

ARGUMENTS
       fw_name
	   the firmware image name

DESCRIPTION
       Cache firmware in kernel memory so that drivers can use it when system isn't ready for them to request firmware image from userspace. Once
       it returns successfully, driver can use request_firmware or its nowait version to get the cached firmware without any interacting with
       userspace

       Return 0 if the firmware image has been cached successfully Return !0 otherwise

COPYRIGHT
Kernel Hackers Manual 3.10					     June 2014							 CACHE_FIRMWARE(9)