On Mon, Aug 17, 2015 at 11:48 PM, Jiri Pirko <[email protected]> wrote:
> Tue, Aug 18, 2015 at 08:14:48AM CEST, [email protected] wrote:
>>On Mon, Aug 17, 2015 at 10:55 PM, Jiri Pirko <[email protected]> wrote:
>>> Tue, Aug 18, 2015 at 12:36:17AM CEST, [email protected] wrote:
>>>>From: Scott Feldman <[email protected]>
>>>
>>> <snip>
>>>
>>>>+      rocker->dbg_dir = debugfs_create_dir(dbg_dir_name, rocker_dbg_root);
>>>>+      if (!rocker->dbg_dir)
>>>
>>> You still check the retval here and
>>
>>It's OK.  See include/linux/debugfs.h when CONFIG_DEBUG_FS=n.
>>debugfs_create_dir() returns ERR_PTR(-ENODEV), which is !NULL.
>
> Does not make sense to check it for NULL then. It is never NULL...

It can be NULL when CONFIG_DEBUG_FS=y.
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