#include <linux/uio.h>
#include <linux/cdev.h>
#include <linux/device.h>
+#include <linux/mutex.h>
#include <asm/uaccess.h>
int inuse;
};
-static struct class_simple *raw_class;
+static struct class *raw_class;
static struct raw_device_data raw_devices[MAX_RAW_MINORS];
-static DECLARE_MUTEX(raw_mutex);
+static DEFINE_MUTEX(raw_mutex);
static struct file_operations raw_ctl_fops; /* forward declaration */
/*
return 0;
}
- down(&raw_mutex);
+ mutex_lock(&raw_mutex);
/*
* All we need to do on open is check that the device is bound.
filp->f_dentry->d_inode->i_mapping =
bdev->bd_inode->i_mapping;
filp->private_data = bdev;
- up(&raw_mutex);
+ mutex_unlock(&raw_mutex);
return 0;
out2:
out1:
blkdev_put(bdev);
out:
- up(&raw_mutex);
+ mutex_unlock(&raw_mutex);
return err;
}
const int minor= iminor(inode);
struct block_device *bdev;
- down(&raw_mutex);
+ mutex_lock(&raw_mutex);
bdev = raw_devices[minor].binding;
if (--raw_devices[minor].inuse == 0) {
/* Here inode->i_mapping == bdev->bd_inode->i_mapping */
inode->i_mapping = &inode->i_data;
inode->i_mapping->backing_dev_info = &default_backing_dev_info;
}
- up(&raw_mutex);
+ mutex_unlock(&raw_mutex);
bd_release(bdev);
blkdev_put(bdev);
static void bind_device(struct raw_config_request *rq)
{
- class_simple_device_remove(MKDEV(RAW_MAJOR, rq->raw_minor));
- class_simple_device_add(raw_class, MKDEV(RAW_MAJOR, rq->raw_minor),
+ class_device_destroy(raw_class, MKDEV(RAW_MAJOR, rq->raw_minor));
+ class_device_create(raw_class, NULL, MKDEV(RAW_MAJOR, rq->raw_minor),
NULL, "raw%d", rq->raw_minor);
}
goto out;
}
- down(&raw_mutex);
+ mutex_lock(&raw_mutex);
if (rawdev->inuse) {
- up(&raw_mutex);
+ mutex_unlock(&raw_mutex);
err = -EBUSY;
goto out;
}
if (rq.block_major == 0 && rq.block_minor == 0) {
/* unbind */
rawdev->binding = NULL;
- class_simple_device_remove(MKDEV(RAW_MAJOR,
- rq.raw_minor));
+ class_device_destroy(raw_class,
+ MKDEV(RAW_MAJOR, rq.raw_minor));
} else {
rawdev->binding = bdget(dev);
if (rawdev->binding == NULL)
bind_device(&rq);
}
}
- up(&raw_mutex);
+ mutex_unlock(&raw_mutex);
} else {
struct block_device *bdev;
- down(&raw_mutex);
+ mutex_lock(&raw_mutex);
bdev = rawdev->binding;
if (bdev) {
rq.block_major = MAJOR(bdev->bd_dev);
} else {
rq.block_major = rq.block_minor = 0;
}
- up(&raw_mutex);
+ mutex_unlock(&raw_mutex);
if (copy_to_user((void __user *)arg, &rq, sizeof(rq))) {
err = -EFAULT;
goto out;
goto error;
}
- raw_class = class_simple_create(THIS_MODULE, "raw");
+ raw_class = class_create(THIS_MODULE, "raw");
if (IS_ERR(raw_class)) {
printk(KERN_ERR "Error creating raw class.\n");
cdev_del(&raw_cdev);
unregister_chrdev_region(dev, MAX_RAW_MINORS);
goto error;
}
- class_simple_device_add(raw_class, MKDEV(RAW_MAJOR, 0), NULL, "rawctl");
+ class_device_create(raw_class, NULL, MKDEV(RAW_MAJOR, 0), NULL, "rawctl");
devfs_mk_cdev(MKDEV(RAW_MAJOR, 0),
S_IFCHR | S_IRUGO | S_IWUGO,
devfs_remove("raw/raw%d", i);
devfs_remove("raw/rawctl");
devfs_remove("raw");
- class_simple_device_remove(MKDEV(RAW_MAJOR, 0));
- class_simple_destroy(raw_class);
+ class_device_destroy(raw_class, MKDEV(RAW_MAJOR, 0));
+ class_destroy(raw_class);
cdev_del(&raw_cdev);
unregister_chrdev_region(MKDEV(RAW_MAJOR, 0), MAX_RAW_MINORS);
}