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authorJiri Slaby <jslaby@suse.cz>2011-05-26 16:25:17 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2011-05-26 17:12:34 -0700
commitdcb3a08e69629ea65a3e9647da730bfaf670497d (patch)
treeda89f661c9e0b2ae3d1dabcc3e27dcf06d2ae8fa /Documentation
parent02d54f092697b6046e466e447cc694b0e6ed45d0 (diff)
Documentation: configfs examples crash fix
When configfs_register_subsystem() fails, we unregister too many subsystems in configfs_example_init. Decrement i by one to not unregister non-registered subsystem. [akpm@linux-foundation.org: coding-style fixes] Signed-off-by: Jiri Slaby <jslaby@suse.cz> Cc: Joel Becker <joel.becker@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/filesystems/configfs/configfs_example_explicit.c6
-rw-r--r--Documentation/filesystems/configfs/configfs_example_macros.c6
2 files changed, 4 insertions, 8 deletions
diff --git a/Documentation/filesystems/configfs/configfs_example_explicit.c b/Documentation/filesystems/configfs/configfs_example_explicit.c
index fd53869f563..1420233dfa5 100644
--- a/Documentation/filesystems/configfs/configfs_example_explicit.c
+++ b/Documentation/filesystems/configfs/configfs_example_explicit.c
@@ -464,9 +464,8 @@ static int __init configfs_example_init(void)
return 0;
out_unregister:
- for (; i >= 0; i--) {
+ for (i--; i >= 0; i--)
configfs_unregister_subsystem(example_subsys[i]);
- }
return ret;
}
@@ -475,9 +474,8 @@ static void __exit configfs_example_exit(void)
{
int i;
- for (i = 0; example_subsys[i]; i++) {
+ for (i = 0; example_subsys[i]; i++)
configfs_unregister_subsystem(example_subsys[i]);
- }
}
module_init(configfs_example_init);
diff --git a/Documentation/filesystems/configfs/configfs_example_macros.c b/Documentation/filesystems/configfs/configfs_example_macros.c
index d8e30a0378a..327dfbc640a 100644
--- a/Documentation/filesystems/configfs/configfs_example_macros.c
+++ b/Documentation/filesystems/configfs/configfs_example_macros.c
@@ -427,9 +427,8 @@ static int __init configfs_example_init(void)
return 0;
out_unregister:
- for (; i >= 0; i--) {
+ for (i--; i >= 0; i--)
configfs_unregister_subsystem(example_subsys[i]);
- }
return ret;
}
@@ -438,9 +437,8 @@ static void __exit configfs_example_exit(void)
{
int i;
- for (i = 0; example_subsys[i]; i++) {
+ for (i = 0; example_subsys[i]; i++)
configfs_unregister_subsystem(example_subsys[i]);
- }
}
module_init(configfs_example_init);