remove cdev_set_name completely as it is not needed.

drivers/char/tty_io.c

@@ -2274,9 +2274,6 @@ int tty_register_driver(struct tty_driver *driver)
 		driver->termios_locked = NULL;
 	}
 
-	cdev_set_name(&driver->cdev, driver->name);
-	for (s = strchr(driver->cdev.kobj.name, '/'); s; s = strchr(s, '/'))
-		*s = '!';
 	cdev_init(&driver->cdev, &tty_fops);
 	driver->cdev.owner = driver->owner;
 	error = cdev_add(&driver->cdev, dev, driver->num);
@@ -2414,7 +2411,6 @@ static struct cdev vc0_cdev;
  */
 static int __init tty_init(void)
 {
-	cdev_set_name(&tty_cdev, "dev.tty");
 	cdev_init(&tty_cdev, &tty_fops);
 	if (cdev_add(&tty_cdev, MKDEV(TTYAUX_MAJOR, 0), 1) ||
 	    register_chrdev_region(MKDEV(TTYAUX_MAJOR, 0), 1, "/dev/tty") < 0)
@@ -2422,7 +2418,6 @@ static int __init tty_init(void)
 	devfs_mk_cdev(MKDEV(TTYAUX_MAJOR, 0), S_IFCHR|S_IRUGO|S_IWUGO, "tty");
 	class_simple_device_add(tty_class, MKDEV(TTYAUX_MAJOR, 0), NULL, "tty");
 
-	cdev_set_name(&console_cdev, "dev.console");
 	cdev_init(&console_cdev, &console_fops);
 	if (cdev_add(&console_cdev, MKDEV(TTYAUX_MAJOR, 1), 1) ||
 	    register_chrdev_region(MKDEV(TTYAUX_MAJOR, 1), 1, "/dev/console") < 0)
@@ -2431,7 +2426,6 @@ static int __init tty_init(void)
 	class_simple_device_add(tty_class, MKDEV(TTYAUX_MAJOR, 1), NULL, "console");
 
 #ifdef CONFIG_UNIX98_PTYS
-	cdev_set_name(&ptmx_cdev, "dev.ptmx");
 	cdev_init(&ptmx_cdev, &tty_fops);
 	if (cdev_add(&ptmx_cdev, MKDEV(TTYAUX_MAJOR, 2), 1) ||
 	    register_chrdev_region(MKDEV(TTYAUX_MAJOR, 2), 1, "/dev/ptmx") < 0)
@@ -2441,7 +2435,6 @@ static int __init tty_init(void)
 #endif
 
 #ifdef CONFIG_VT
-	cdev_set_name(&vc0_cdev, "dev.vc0");
 	cdev_init(&vc0_cdev, &console_fops);
 	if (cdev_add(&vc0_cdev, MKDEV(TTY_MAJOR, 0), 1) ||
 	    register_chrdev_region(MKDEV(TTY_MAJOR, 0), 1, "/dev/vc/0") < 0)

drivers/ieee1394/amdtp.c

@@ -1266,7 +1266,6 @@ static int __init amdtp_init_module (void)
 {
 	cdev_init(&amdtp_cdev, &amdtp_fops);
 	amdtp_cdev.owner = THIS_MODULE;
-	cdev_set_name(&amdtp_cdev, "amdtp");
 	if (cdev_add(&amdtp_cdev, IEEE1394_AMDTP_DEV, 16)) {
 		HPSB_ERR("amdtp: unable to add char device");
  		return -EIO;

drivers/ieee1394/dv1394.c

@@ -2616,7 +2616,6 @@ static int __init dv1394_init_module(void)
 
 	cdev_init(&dv1394_cdev, &dv1394_fops);
 	dv1394_cdev.owner = THIS_MODULE;
-	cdev_set_name(&dv1394_cdev, "dv1394");
 	ret = cdev_add(&dv1394_cdev, IEEE1394_DV1394_DEV, 16);
 	if (ret) {
 		printk(KERN_ERR "dv1394: unable to register character device\n");

drivers/ieee1394/raw1394.c

@@ -2746,7 +2746,6 @@ static int __init init_raw1394(void)
 
 	cdev_init(&raw1394_cdev, &raw1394_fops);
 	raw1394_cdev.owner = THIS_MODULE;
-	cdev_set_name(&raw1394_cdev, RAW1394_DEVICE_NAME);
 	ret = cdev_add(&raw1394_cdev, IEEE1394_RAW1394_DEV, 1);
 	if (ret) {
 		/* jmc: leaves reference to (static) raw1394_cdev */

drivers/ieee1394/video1394.c

@@ -1457,7 +1457,6 @@ static int __init video1394_init_module (void)
 
 	cdev_init(&video1394_cdev, &video1394_fops);
 	video1394_cdev.owner = THIS_MODULE;
-	cdev_set_name(&video1394_cdev, VIDEO1394_DRIVER_NAME);
 	ret = cdev_add(&video1394_cdev, IEEE1394_VIDEO1394_DEV, 16);
 	if (ret) {
 		PRINT_G(KERN_ERR, "video1394: unable to get minor device block");

drivers/s390/char/tape_class.c

@@ -46,9 +46,6 @@ struct cdev *register_tape_dev(
 	cdev->owner = fops->owner;
 	cdev->ops   = fops;
 	cdev->dev   = dev;
-	cdev_set_name(cdev, devname);
-	for (s = strchr(cdev->kobj.name, '/'); s; s = strchr(s, '/'))
-		*s = '!';
 
 	rc = cdev_add(cdev, cdev->dev, 1);
 	if (rc) {

drivers/scsi/sg.c

@@ -1409,7 +1409,6 @@ sg_add(struct class_device *cl_dev)
 	SCSI_LOG_TIMEOUT(3, printk("sg_add: dev=%d \n", k));
 	memset(sdp, 0, sizeof(*sdp));
 	sprintf(disk->disk_name, "sg%d", k);
-	cdev_set_name(cdev, disk->disk_name);
 	cdev->owner = THIS_MODULE;
 	cdev->ops = &sg_fops;
 	disk->major = SCSI_GENERIC_MAJOR;

drivers/scsi/st.c

@@ -3888,7 +3888,6 @@ static int st_probe(struct device *dev)
 				       dev_num);
 				goto out_free_tape;
 			}
-			cdev_set_name(cdev, "%sm%d%s", disk->disk_name, mode, j ? "n" : "");
 			cdev->owner = THIS_MODULE;
 			cdev->ops = &st_fops;
 

include/linux/cdev.h

@@ -25,7 +25,5 @@ void cdev_del(struct cdev *);
 
 void cd_forget(struct inode *);
 
-#define cdev_set_name(cdev, args...) kobject_set_name(&((cdev)->kobj), ##args)
-
 #endif
 #endif