Dien Pham 31ec38ec9c thermal/drivers/rcar_gen3: Fix undefined temperature if negative ... [ Upstream commit 5f8f06425a ] As description for DIV_ROUND_CLOSEST in file include/linux/kernel.h. "Result is undefined for negative divisors if the dividend variable type is unsigned and for negative dividends if the divisor variable type is unsigned." In current code, the FIXPT_DIV uses DIV_ROUND_CLOSEST but has not checked sign of divisor before using. It makes undefined temperature value in case the value is negative. This patch fixes to satisfy DIV_ROUND_CLOSEST description and fix bug too. Note that the variable name "reg" is not good because it should be the same type as rcar_gen3_thermal_read(). However, it's better to rename the "reg" in a further patch as cleanup. Signed-off-by: Van Do <van.do.xw@renesas.com> Signed-off-by: Dien Pham <dien.pham.ry@renesas.com> [shimoda: minor fixes, add Fixes tag] Fixes: 564e73d283 ("thermal: rcar_gen3_thermal: Add R-Car Gen3 thermal driver") Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Reviewed-by: Niklas Soderlund <niklas.soderlund+renesas@ragnatech.se> Tested-by: Niklas Soderlund <niklas.soderlund+renesas@ragnatech.se> Reviewed-by: Amit Kucheria <amit.kucheria@linaro.org> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Link: https://lore.kernel.org/r/1593085099-2057-1-git-send-email-yoshihiro.shimoda.uh@renesas.com Signed-off-by: Sasha Levin <sashal@kernel.org>		2020-07-09 09:37:53 +02:00
..
broadcom	thermal: brcmstb_thermal: Do not use DT coefficients	2020-03-05 16:43:50 +01:00
intel	Merge branch 'for-5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux	2019-09-27 11:35:13 -07:00
qcom
samsung
st
tegra
ti-soc-thermal	thermal/drivers/ti-soc-thermal: Avoid dereferencing ERR_PTR	2020-06-24 17:50:23 +02:00
armada_thermal.c
clock_cooling.c
cpu_cooling.c	cpufreq: Use per-policy frequency QoS	2019-10-21 02:05:21 +02:00
da9062-thermal.c
db8500_thermal.c	thermal: db8500: Depromote debug print	2020-03-05 16:43:50 +01:00
devfreq_cooling.c
dove_thermal.c
fair_share.c
gov_bang_bang.c
hisi_thermal.c
imx_thermal.c
Kconfig	thermal: db8500: Finalize device tree conversion	2019-09-24 22:54:49 -07:00
kirkwood_thermal.c
Makefile
max77620_thermal.c
mtk_thermal.c	thermal/drivers/mediatek: Fix bank number settings on mt8183	2020-07-09 09:37:53 +02:00
of-thermal.c
power_allocator.c
qoriq_thermal.c
rcar_gen3_thermal.c	thermal/drivers/rcar_gen3: Fix undefined temperature if negative	2020-07-09 09:37:53 +02:00
rcar_thermal.c
rockchip_thermal.c
spear_thermal.c
step_wise.c
tango_thermal.c
thermal-generic-adc.c
thermal_core.c	thermal: Fix deadlock in thermal thermal_zone_device_check	2019-12-13 08:43:21 +01:00
thermal_core.h
thermal_helpers.c
thermal_hwmon.c
thermal_hwmon.h
thermal_mmio.c
thermal_sysfs.c
uniphier_thermal.c
user_space.c
zx2967_thermal.c