• Benjamin Herrenschmidt's avatar
    [PATCH] powerpc: more g5 overtemp problem fix · f12f4d90
    Benjamin Herrenschmidt authored
    Some G5s still occasionally experience shutdowns due to overtemp
    conditions despite the recent fix. After analyzing logs from such
    machines, it appears that the overtemp code is a bit too quick at
    shutting the machine down when reaching the critical temperature (tmax +
    8) and doesn't leave the fan enough time to actually cool it down. This
    happens if the temperature of a CPU suddenly rises too high in a very
    short period of time, or occasionally on boot (that is the CPUs are
    already overtemp by the time the driver loads).
    
    This patches makes the code a bit more relaxed, leaving a few seconds to
    the fans to do their job before kicking the machine shutown.
    Signed-off-by: default avatarBenjamin Herrenschmidt <benh@kernel.crashing.org>
    Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
    f12f4d90
therm_pm72.c 56 KB