On 07/17/12 20:47, Anton Vorontsov wrote:
- file = debugfs_create_file("record_ftrace", 0600, dir, NULL,
&pstore_knob_fops);
- if (IS_ERR_OR_NULL(file)) {
err = PTR_ERR(file);
pr_err("%s: unable to create pstore/ftrace file: %d\n",
__func__, err);
goto err_file;
- }
debugfs only returns NULL on failure.