simple linux kernel program that complains about pointer problem

[捕鲸叉]

i write a simple kernel program, and it complains about pointer problem: " dereferencing pointer to incomplete type"
on the "ret->name" "ret->state" "ret->core_size"
how to correct it?
next are the .c file and Makefile

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/preempt.h>

MODULE_LICENSE("GPL");

static int _init_module_address(void);
static void _exit_module_address(void);

struct module;

int amodule(void)
{
	return 0;
}

int _init_module_address(void)
{
	struct moudle* ret = NULL;
	const unsigned long addr = (const unsigned long)amodule;

	preempt_disable();
	ret = __module_address(addr);
	preempt_enable();


	if (ret != NULL)
	{
		//ret->name; //dereferencing pointer to incomplete type
		printk(KERN_INFO   "name=%s\n", ret->name);
		printk(KERN_INFO   "state=%d\n", int(ret->state));
		printk(KERN_INFO  "core_size=%d\n", int(ret->core_size));
		printk(KERN_INFO  "module addr return not NULL\n");
		return 0;
	}

	printk(KERN_INFO  "module addr return NULL\n");
	return 0;	
}

void _exit_module_address(void)
{
	printk(KERN_INFO  "module exit\n");
}

module_init(_init_module_address);
module_exit(_exit_module_address);

ifneq ($(KERNELRELEASE),)
obj-m = _module_address.o
else
PWD := $(shell pwd)
KVER := $(shell uname -r)
KDIR := /lib/modules/$(KVER)/build
endif

default:
	$(MAKE) -C $(KDIR)  SUBDIRS=$(PWD) modules

clean:
	rm -rf	*.o	*.mod.c	*.ko	*.symvers *.order *.makers *~

[jklinux]

// struct moudle* ret = NULL; you wrote the wrong word. it should be "struct module" . besides, what's the program for ? just for getting information about current module?

[捕鲸叉]

引用 2 楼 jklinux 的回复:

// struct moudle* ret = NULL; you wrote the wrong word. it should be "struct module" . besides, what's the program for ? just for getting information about current module?

you are right! how stupid a mistake i made

[捕鲸叉]

sorry for using english, my ubuntu is english version