#include <linux/config.h>
#include <linux/device.h>
-#include <linux/kdev_t.h>
#include <linux/err.h>
struct class_simple {
- struct class_device_attribute attr;
struct class class;
};
#define to_class_simple(d) container_of(d, struct class_simple, class)
struct simple_dev {
struct list_head node;
- dev_t dev;
struct class_device class_dev;
};
#define to_simple_dev(d) container_of(d, struct simple_dev, class_dev)
kfree(s_dev);
}
-static ssize_t show_dev(struct class_device *class_dev, char *buf)
-{
- struct simple_dev *s_dev = to_simple_dev(class_dev);
- return print_dev_t(buf, s_dev->dev);
-}
-
static void class_simple_release(struct class *class)
{
struct class_simple *cs = to_class_simple(class);
cs->class.class_release = class_simple_release;
cs->class.release = release_simple_dev;
- cs->attr.attr.name = "dev";
- cs->attr.attr.mode = S_IRUGO;
- cs->attr.attr.owner = owner;
- cs->attr.show = show_dev;
- cs->attr.store = NULL;
-
retval = class_register(&cs->class);
if (retval)
goto error;
}
memset(s_dev, 0x00, sizeof(*s_dev));
- s_dev->dev = dev;
+ s_dev->class_dev.devt = dev;
s_dev->class_dev.dev = device;
s_dev->class_dev.class = &cs->class;
if (retval)
goto error;
- class_device_create_file(&s_dev->class_dev, &cs->attr);
-
spin_lock(&simple_dev_list_lock);
list_add(&s_dev->node, &simple_dev_list);
spin_unlock(&simple_dev_list_lock);
spin_lock(&simple_dev_list_lock);
list_for_each_entry(s_dev, &simple_dev_list, node) {
- if (s_dev->dev == dev) {
+ if (s_dev->class_dev.devt == dev) {
found = 1;
break;
}