1 files changed, 12 insertions, 11 deletions

diff --git a/drivers/char/raw.c b/drivers/char/raw.c
index 30e4cbe..15a7b40 100644
--- a/drivers/char/raw.c
+++ b/drivers/char/raw.c
@@ -19,6 +19,7 @@
 #include <linux/uio.h>
 #include <linux/cdev.h>
 #include <linux/device.h>
+#include <linux/mutex.h>
 
 #include <asm/uaccess.h>
 
@@ -29,7 +30,7 @@ struct raw_device_data {
 
 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 */
 
 /*
@@ -53,7 +54,7 @@ static int raw_open(struct inode *inode, struct file *filp)
 		return 0;
 	}
 
-	down(&raw_mutex);
+	mutex_lock(&raw_mutex);
 
 	/*
 	 * All we need to do on open is check that the device is bound.
@@ -78,7 +79,7 @@ static int raw_open(struct inode *inode, struct file *filp)
 		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:
@@ -86,7 +87,7 @@ out2:
 out1:
 	blkdev_put(bdev);
 out:
-	up(&raw_mutex);
+	mutex_unlock(&raw_mutex);
 	return err;
 }
 
@@ -99,14 +100,14 @@ static int raw_release(struct inode *inode, struct file *filp)
 	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);
@@ -187,9 +188,9 @@ static int raw_ctl_ioctl(struct inode *inode, struct file *filp,
 				goto out;
 			}
 
-			down(&raw_mutex);
+			mutex_lock(&raw_mutex);
 			if (rawdev->inuse) {
-				up(&raw_mutex);
+				mutex_unlock(&raw_mutex);
 				err = -EBUSY;
 				goto out;
 			}
@@ -211,11 +212,11 @@ static int raw_ctl_ioctl(struct inode *inode, struct file *filp,
 					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);
@@ -223,7 +224,7 @@ static int raw_ctl_ioctl(struct inode *inode, struct file *filp,
 			} 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;