request_firmware — send firmware request and wait for it
int request_firmware
(const struct firmware ** firmware_p, const char * name, struct device * device);
pointer to firmware image
name of firmware file
device for which firmware is being loaded
firmware_p will be used to return a firmware image by the name of name for device device.
Should be called from user context where sleeping is allowed.
name will be used as $FIRMWARE in the uevent environment and should be distinctive enough not to be confused with any other firmware image for this or any other device.