[PATCH] paride-pt: register_chrdev fix

If the user specified `major=0' (odd thing to do), pt.c will use dynamic
allocation.  We need to pick up that major for subsequent unregister_chrdev().
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

drivers/block/paride/pt.c

@@ -943,7 +943,8 @@ static ssize_t pt_write(struct file *filp, const char __user *buf, size_t count,
 
 static int __init pt_init(void)
 {
-	int unit, err = 0;
+	int unit;
+	int err;
 
 	if (disable) {
 		err = -1;
@@ -955,14 +956,15 @@ static int __init pt_init(void)
 		goto out;
 	}
 
-	if (register_chrdev(major, name, &pt_fops)) {
+	err = register_chrdev(major, name, &pt_fops);
+	if (err < 0) {
 		printk("pt_init: unable to get major number %d\n", major);
 		for (unit = 0; unit < PT_UNITS; unit++)
 			if (pt[unit].present)
 				pi_release(pt[unit].pi);
-		err = -1;
 		goto out;
 	}
+	major = err;
 	pt_class = class_create(THIS_MODULE, "pt");
 	if (IS_ERR(pt_class)) {
 		err = PTR_ERR(pt_class);