Device Attributes in sysfs

[Sticktrick]

Hi there...
I try to build additional device attributes in my module so they will appear in sysfs. But I can't build them and i can't find how to do it!?
Plz help...the atributes are "name", "pid", "pgdir"...

My source-code is:

#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/device.h>
#include <linux/fs.h>


MODULE_DESCRIPTION("My kernel module");
MODULE_LICENSE("GPL");

static char *name;
module_param(name, charp, 0644);

struct class *bs_class;
struct device *bs_device;
static int bs_Major;

//static int device_open(struct inode *, struct file *);
//static int device_release(struct inode *, struct file *);
//static ssize_t device_read(struct file *, char *, size_t, loff_t *);
//static ssize_t device_write(struct file *, const char *, size_t, loff_t *);

static struct file_operations fops = {
// .read = device_read,
// .write = device_write,
// .open = device_open,
// .release = device_release
};


static int bs1_init_module(void)
{
printk("<0>Module BS1 init\n" );
bs_Major = register_chrdev(0,"bs-device", &fops);
if (bs_Major<0) {
printk(KERN_WARNING "Kann keine Major-Nummer bekommen!");
return bs_Major;
}
bs_class = class_create(THIS_MODULE,"bs-class");
bs_device = device_create(bs_class,NULL,MKDEV(bs_Major,0),"bs-device");
// DEVICE_ATTR(name,0644,show_debug, NULL);
return 0;
}

static void bs1_exit_module(void)
{
printk("<0>Module BS1 exit\n" );
class_destroy(bs_class);
device_destroy(bs_class,MKDEV(bs_Major,0));
unregister_chrdev(bs_Major,"bs-device");
}

module_init(bs1_init_module);
module_exit(bs1_exit_module);

[srinivasa_rao]

Hi,

I am facing one problem with device attribute functions.

I am using below macro for registering

static DEVICE_ATTR(state, S_IRUGO | S_IWUSR, xmd_boot_modem_state_show,
xmd_boot_modem_state_store);

and
status = device_create_file(&pdev->dev, &dev_attr_state);

here in my code xmd_boot_modem_state_store() is not getting called.

Just i wanted to know what makes these functions gets called.

Kindly help me in this regard.