https://bugzilla.kernel.org/show_bug.cgi?id=119211
--- Comment #15 from Stas Sergeev stsp@list.ru ---
I should mention, my pwm1_min is 0 and pwm1_max is 255.
Same here. IMHO pwm1_min should contain the value that keeps the fan rotating at a minimal safe speed. Putting 0 there makes it entirely useless.