in drivers/misc/sfp/amzn-sfp.c [315:322]
static ssize_t amzn_sfp_write(struct file *fp, struct kobject *kobj,
    struct bin_attribute *ba, char *buf, loff_t ofs, size_t len)
{
	ssize_t result;
	result = amzn_sfp_rw(ba, buf, ofs, len, 0);
	return result;
}