[PATCH] name_to_dev_t() fix

From: viro@parcelfarce.linux.theplanet.co.uk

When we register disks, we mangle the disk names that contain slashes (e.g.
cciss/c0d0) replacing them with '!' in corresponding sysfs names.  So
name_to_dev_t() should mangle the name in the same way before looking for it
in /sys/block.

init/do_mounts.c

@@ -130,7 +130,7 @@ static dev_t __init try_name(char *name, int part)
  *	Driverfs is used to check if something is a disk name - it has
  *	all known disks under bus/block/devices.  If the disk name
  *	contains slashes, name of driverfs node has them replaced with
- *	dots.  try_name() does the actual checks, assuming that driverfs
+ *	bangs.  try_name() does the actual checks, assuming that driverfs
  *	is mounted on rootfs /sys.
  */
 
@@ -169,7 +169,7 @@ dev_t __init name_to_dev_t(char *name)
 	strcpy(s, name);
 	for (p = s; *p; p++)
 		if (*p == '/')
-			*p = '.';
+			*p = '!';
 	res = try_name(s, 0);
 	if (res)
 		goto done;