On 9/3/24 8:43 AM, Li Zetao wrote: > Since the debugfs_create_dir() never returns a null pointer, checking > the return value for a null pointer is redundant, and using IS_ERR is > safe enough. Sigh, why are we seeing so many odd variants of this recently. If you'd do a bit of searching upfront, you'd find that these should not be checked at all rather than changing it from err+null to just an error pointer check. So no to this one, please do at least a tiny bit of research first before blindly making a change based on what some static analyzer told you. -- Jens Axboe