On Thu, Apr 28, 2022 at 8:50 PM Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> wrote: > > On Thu, Apr 28, 2022 at 8:30 AM Rafael J. Wysocki <rafael@xxxxxxxxxx> wrote: > > > > - Make the ACPI processor driver avoid falling back to C3 type of > > C-states when C3 cannot be requested (Ville Syrjälä). > > Hmm. > > Doesn't this avoid C3 for _everybody_ rather than some conditional > "when C3 cannot be requested"? The bug was that if acpi_idle_bm_check() returned 1, it would "fall back" to the same state via safe_state_index. > Of course, it looks like the 'has_lpi' state still potentially allows > C3 even for busmastering sleeps. Maybe that is what you meant. That too. Thanks for pulling! Rafael
