Hi Krzysztof, > During probe the regulator (if present) was enabled but not disabled > in case of failure. So an unsuccessful probe lead to enabling the > regulator which was actually not needed because the device was not > enabled. > > Additionally each deferred probe lead to increase of regulator enable > count so it would not be effectively disabled during removal of the > device.
Thanks for catching this. > > Signed-off-by: Krzysztof Kozlowski <[email protected]> > Fixes: 498d22f616f6 ("thermal: exynos: Support for TMU regulator > defined at device tree") Cc: <[email protected]> > > --- > > I am not entirely convinced that this should go to stable. Leaving a > regulator enabled in case of probe failure (no exynos TMU device) or > after deferred probe (regulator won't be disabled during device > removal) is not a critical issue, just leaks power. > --- > drivers/thermal/samsung/exynos_tmu.c | 2 ++ > 1 file changed, 2 insertions(+) > > diff --git a/drivers/thermal/samsung/exynos_tmu.c > b/drivers/thermal/samsung/exynos_tmu.c index > 531f4b179871..13c3aceed19d 100644 --- > a/drivers/thermal/samsung/exynos_tmu.c +++ > b/drivers/thermal/samsung/exynos_tmu.c @@ -1392,6 +1392,8 @@ > err_clk_sec: if (!IS_ERR(data->clk_sec)) > clk_unprepare(data->clk_sec); > err_sensor: > + if (!IS_ERR_OR_NULL(data->regulator)) > + regulator_disable(data->regulator); > thermal_zone_of_sensor_unregister(&pdev->dev, data->tzd); > > return ret; Acked-by: Lukasz Majewski <[email protected]> I will test it and afterwards add to samsung-thermal tree. -- Best regards, Lukasz Majewski Samsung R&D Institute Poland (SRPOL) | Linux Platform Group -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
