lkdtm: 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: Arnd Bergmann <arnd@arndb.de>
Cc: linux-kernel@vger.kernel.org
Acked-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/misc/lkdtm/core.c b/drivers/misc/lkdtm/core.c
index 1972dad966f54ccccf4f6fa536d8267a83dfff9b..bae3b3763f3ec9240c34347c290bb26e5e47e1f6 100644 (file)
--- a/drivers/misc/lkdtm/core.c
+++ b/drivers/misc/lkdtm/core.c
@@ -429,22 +429,13 @@ static int __init lkdtm_module_init(void)
 
        /* Register debugfs interface */
        lkdtm_debugfs_root = debugfs_create_dir("provoke-crash", NULL);
-       if (!lkdtm_debugfs_root) {
-               pr_err("creating root dir failed\n");
-               return -ENODEV;
-       }
 
        /* Install debugfs trigger files. */
        for (i = 0; i < ARRAY_SIZE(crashpoints); i++) {
                struct crashpoint *cur = &crashpoints[i];
-               struct dentry *de;
 
-               de = debugfs_create_file(cur->name, 0644, lkdtm_debugfs_root,
-                                        cur, &cur->fops);
-               if (de == NULL) {
-                       pr_err("could not create crashpoint %s\n", cur->name);
-                       goto out_err;
-               }
+               debugfs_create_file(cur->name, 0644, lkdtm_debugfs_root, cur,
+                                   &cur->fops);
        }
 
        /* Install crashpoint if one was selected. */