Messages in this thread |  | | Date | Wed, 14 Dec 2022 15:45:57 +0100 | From | Johan Hovold <> | Subject | Re: [PATCH 2/4] thermal/drivers/exynos: fix set_trip_temp() deadlock |
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On Wed, Dec 14, 2022 at 02:16:15PM +0100, Johan Hovold wrote: > The set_trip_temp() callback is used when changing the trip temperature > through sysfs. As it is called with the thermal-zone-device lock held > it must not use thermal_zone_get_trip() directly or it will deadlock. > > Fixes: 169865e317f2 ("thermal/drivers/exynos: Use generic thermal_zone_get_trip() function") > Signed-off-by: Johan Hovold <johan+linaro@kernel.org> > --- > drivers/thermal/samsung/exynos_tmu.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/drivers/thermal/samsung/exynos_tmu.c b/drivers/thermal/samsung/exynos_tmu.c > index 37465af59262..cf9028f80415 100644 > --- a/drivers/thermal/samsung/exynos_tmu.c > +++ b/drivers/thermal/samsung/exynos_tmu.c > @@ -354,7 +354,7 @@ static void exynos4210_tmu_set_trip_temp(struct exynos_tmu_data *data, > struct thermal_trip trip; > u8 ref, th_code; > > - if (thermal_zone_get_trip(data->tzd, 0, &trip)) > + if (__thermal_zone_get_trip(data->tzd, 0, &trip)) > return; > > ref = trip.temperature / MCELSIUS;
As Daniel noted, this patch is not correct as this function is not actually a thermal_zone_device_ops::set_trip_temp callback.
Please drop this one.
Johan
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