static ssize_t show_event(struct device *dev, char *buf)
static ssize_t show_event(struct device *dev, struct device_attribute *attr, char *buf)
static ssize_t show_event(struct device *dev, char *buf){	/* bits 5..7 reserved => mask with 0x1f */	struct fscpos_data *data = fscpos_update_device(dev);	return sprintf(buf, "%u\n", data->global_event & 0x9b);}