Commit 2d3a5d21 authored by Johannes Thumshirn's avatar Johannes Thumshirn Committed by James Bottomley

st: Destroy st_index_idr on module exit

Destroy st_index_idr on module exit, reclaiming the allocated memory.

This was detected by the following semantic patch (written by Luis Rodriguez
<mcgrof@suse.com>)
<SmPL>
@ defines_module_init @
declarer name module_init, module_exit;
declarer name DEFINE_IDR;
identifier init;
@@

module_init(init);

@ defines_module_exit @
identifier exit;
@@

module_exit(exit);

@ declares_idr depends on defines_module_init && defines_module_exit @
identifier idr;
@@

DEFINE_IDR(idr);

@ on_exit_calls_destroy depends on declares_idr && defines_module_exit @
identifier declares_idr.idr, defines_module_exit.exit;
@@

exit(void)
{
 ...
 idr_destroy(&idr);
 ...
}

@ missing_module_idr_destroy depends on declares_idr && defines_module_exit && !on_exit_calls_destroy @
identifier declares_idr.idr, defines_module_exit.exit;
@@

exit(void)
{
 ...
 +idr_destroy(&idr);
}
</SmPL>
Signed-off-by: default avatarJohannes Thumshirn <jthumshirn@suse.de>
Reviewed-by: default avatarHannes Reinecke <hare@suse.de>
Acked-by: default avatarKai Mäkisara <kai.makisara@kolumbus.fi>
Signed-off-by: default avatarJames Bottomley <JBottomley@Odin.com>
parent da0dc9fb
......@@ -4419,6 +4419,7 @@ static void __exit exit_st(void)
unregister_chrdev_region(MKDEV(SCSI_TAPE_MAJOR, 0),
ST_MAX_TAPE_ENTRIES);
class_unregister(&st_sysfs_class);
idr_destroy(&st_index_idr);
printk(KERN_INFO "st: Unloaded.\n");
}
......
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