On Sat, Jul 31, 2021 at 11:36 AM Heiner Kallweit [off-list ref] wrote:

Seeing an erroneous use of pm_runtime_resume_and_get() in a patch I wonder
whether we should annotate this function as __must_check. If the caller
doesn't check the return code he doesn't know whether usage counter was
bumped or not. Therefore I see a good chance that this results in a usage
counter imbalance.

Sounds reasonable.  Please send a patch to make that change.