[PATCH 4/8] dm: deregister the misc device before removing /dev/mapper

From: Joe Thornber (joe@fib011235813.fsnet.co.uk)
Date: Wed Feb 26 2003 - 12:10:18 EST


Fix problem with devfs when unloading the dm module.

dm-ioctl.c: deregister the misc device, and its associated symlink
*before* removing the /dev/mapper dir. [Alasdair Kergon]

--- diff/drivers/md/dm-ioctl.c 2003-02-26 16:09:52.000000000 +0000
+++ source/drivers/md/dm-ioctl.c 2003-02-26 16:09:57.000000000 +0000
@@ -1123,17 +1123,17 @@
         return 0;
 
       failed:
+ devfs_remove(DM_DIR "/control");
+ if (misc_deregister(&_dm_misc) < 0)
+ DMERR("misc_deregister failed for control device");
         dm_hash_exit();
- misc_deregister(&_dm_misc);
         return r;
 }
 
 void dm_interface_exit(void)
 {
- dm_hash_exit();
-
         devfs_remove(DM_DIR "/control");
-
         if (misc_deregister(&_dm_misc) < 0)
                 DMERR("misc_deregister failed for control device");
+ dm_hash_exit();
 }
-
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