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.