On Tue, Sep 14, 2021 at 06:35:26PM -0300, Gaston Gonzalez wrote: > usleep_range() should be used instead of sleep() when sleepings range > from 10 us to 20 ms, [1]. > > Reported by checkpatch.pl > > [1] Documentation/timers/timers-howto.txt For this particular warning, you should probably just ignore it, if you can't test it... You need a Signed-off-by. Please run checkpatch.pl on your patches. regards, dan carpenter