#include <linux/module.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/cdev.h>
#include <linux/fs.h>
#include <linux/wait.h>
#include <linux/errno.h>
#include <linux/slab.h>
#include <linux/uaccess.h>
#include <linux/device.h> 

#include "pub.h"

MODULE_LICENSE("GPL");
MODULE_AUTHOR("liuchao");


static int my_bus_match(struct device *dev, struct device_driver *drv){
    PDEBUG("%s-%s\n",__FILE__, __func__);
    if(!strncmp(dev_name(dev), drv->name, strlen(drv->name)))
    {
        PDEBUG("dev & drv match\n");
    }
}

static struct bus_type my_bus = {
    .name = "my_bus",
    .match = my_bus_match,
};

EXPORT_SYMBOL(my_bus);

static char *version = "$Revision: 1.9 $";

static ssize_t my_bus_test_show(struct bus_type *bus, char *buf)
{
    return sprintf(buf, "%s\n", version);
}

static BUS_ATTR(Version, S_IRUSR, my_bus_test_show, NULL);


static __init int my_bus_init(void)
{
    printk("my_bus init\n");

    bus_register(&my_bus);
    bus_create_file(&my_bus, &bus_attr_Version);
    return 0;
}
module_init(my_bus_init);


static __exit void my_bus_exit(void)
{
    printk("my_bus exit\n");
    bus_remove_file(&my_bus, &bus_attr_Version);
    bus_unregister(&my_bus);
}
module_exit(my_bus_exit);