pstore: no need to check return value of debugfs_create functions

When calling debugfs functions, there is no need to ever check the
return value.  The function can work or not, but the code logic should
never do something different based on this.

Cc: Kees Cook <keescook@chromium.org>
Cc: Anton Vorontsov <anton@enomsg.org>
Cc: Colin Cross <ccross@android.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Kees Cook <keescook@chromium.org>

diff --git a/fs/pstore/ftrace.c b/fs/pstore/ftrace.c
index 8e0a17ce3180bc5bd172252a86e748d5f8f912fc..bfbfc269807020cc91b1cba4421bafc732e76999 100644 (file)
--- a/fs/pstore/ftrace.c
+++ b/fs/pstore/ftrace.c
@@ -112,27 +112,13 @@ static struct dentry *pstore_ftrace_dir;
 
 void pstore_register_ftrace(void)
 {
-       struct dentry *file;
-
        if (!psinfo->write)
                return;
 
        pstore_ftrace_dir = debugfs_create_dir("pstore", NULL);
-       if (!pstore_ftrace_dir) {
-               pr_err("%s: unable to create pstore directory\n", __func__);
-               return;
-       }
-
-       file = debugfs_create_file("record_ftrace", 0600, pstore_ftrace_dir,
-                                  NULL, &pstore_knob_fops);
-       if (!file) {
-               pr_err("%s: unable to create record_ftrace file\n", __func__);
-               goto err_file;
-       }
 
-       return;
-err_file:
-       debugfs_remove(pstore_ftrace_dir);
+       debugfs_create_file("record_ftrace", 0600, pstore_ftrace_dir, NULL,
+                           &pstore_knob_fops);
 }
 
 void pstore_unregister_ftrace(void)