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From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Amy Shih <amy.shih@advantech.com.tw>,
	Guenter Roeck <linux@roeck-us.net>,
	Sasha Levin <sashal@kernel.org>,
	linux-hwmon@vger.kernel.org
Subject: [PATCH AUTOSEL 5.4 28/32] hwmon: (nct7904) Fix incorrect range of temperature limit registers
Date: Fri, 22 May 2020 10:50:40 -0400
Message-ID: <20200522145044.434677-28-sashal@kernel.org> (raw)
In-Reply-To: <20200522145044.434677-1-sashal@kernel.org>

From: Amy Shih <amy.shih@advantech.com.tw>

[ Upstream commit 7b2fd270af27edaf02acb41a7babe805a9441914 ]

The format of temperature limitation registers are 8-bit 2's complement
and the range is -128~127.
Converts the reading value to signed char to fix the incorrect range
of temperature limitation registers.

Signed-off-by: Amy Shih <amy.shih@advantech.com.tw>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/hwmon/nct7904.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/hwmon/nct7904.c b/drivers/hwmon/nct7904.c
index 281c81edabc6..dfb122b5e1b7 100644
--- a/drivers/hwmon/nct7904.c
+++ b/drivers/hwmon/nct7904.c
@@ -356,6 +356,7 @@ static int nct7904_read_temp(struct device *dev, u32 attr, int channel,
 	struct nct7904_data *data = dev_get_drvdata(dev);
 	int ret, temp;
 	unsigned int reg1, reg2, reg3;
+	s8 temps;
 
 	switch (attr) {
 	case hwmon_temp_input:
@@ -461,7 +462,8 @@ static int nct7904_read_temp(struct device *dev, u32 attr, int channel,
 
 	if (ret < 0)
 		return ret;
-	*val = ret * 1000;
+	temps = ret;
+	*val = temps * 1000;
 	return 0;
 }
 
-- 
2.25.1


  parent reply index

Thread overview: 32+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-05-22 14:50 [PATCH AUTOSEL 5.4 01/32] ARM: dts: rockchip: fix phy nodename for rk3228-evb Sasha Levin
2020-05-22 14:50 ` [PATCH AUTOSEL 5.4 02/32] ARM: dts: rockchip: fix phy nodename for rk3229-xms6 Sasha Levin
2020-05-22 14:50 ` [PATCH AUTOSEL 5.4 03/32] arm64: dts: rockchip: fix status for &gmac2phy in rk3328-evb.dts Sasha Levin
2020-05-22 14:50 ` [PATCH AUTOSEL 5.4 04/32] arm64: dts: rockchip: swap interrupts interrupt-names rk3399 gpu node Sasha Levin
2020-05-22 14:50 ` [PATCH AUTOSEL 5.4 05/32] ARM: dts: rockchip: swap clock-names of gpu nodes Sasha Levin
2020-05-22 14:50 ` [PATCH AUTOSEL 5.4 06/32] ARM: dts: rockchip: fix pinctrl sub nodename for spi in rk322x.dtsi Sasha Levin
2020-05-22 14:50 ` [PATCH AUTOSEL 5.4 07/32] gpio: tegra: mask GPIO IRQs during IRQ shutdown Sasha Levin
2020-05-22 14:50 ` [PATCH AUTOSEL 5.4 08/32] ALSA: usb-audio: add mapping for ASRock TRX40 Creator Sasha Levin
2020-05-22 14:50 ` [PATCH AUTOSEL 5.4 09/32] net: microchip: encx24j600: add missed kthread_stop Sasha Levin
2020-05-22 14:50 ` [PATCH AUTOSEL 5.4 10/32] gfs2: move privileged user check to gfs2_quota_lock_check Sasha Levin
2020-05-22 14:50 ` [PATCH AUTOSEL 5.4 11/32] gfs2: don't call quota_unhold if quotas are not locked Sasha Levin
2020-05-22 14:50 ` [PATCH AUTOSEL 5.4 12/32] gfs2: Grab glock reference sooner in gfs2_add_revoke Sasha Levin
2020-05-22 14:50 ` [PATCH AUTOSEL 5.4 13/32] drm/amdgpu: drop unnecessary cancel_delayed_work_sync on PG ungate Sasha Levin
2020-05-22 14:50 ` [PATCH AUTOSEL 5.4 14/32] drm/amd/powerplay: perform PG ungate prior to CG ungate Sasha Levin
2020-05-22 14:50 ` [PATCH AUTOSEL 5.4 15/32] drm/amdgpu: Use GEM obj reference for KFD BOs Sasha Levin
2020-05-22 14:50 ` [PATCH AUTOSEL 5.4 16/32] Revert "gfs2: Don't demote a glock until its revokes are written" Sasha Levin
2020-05-22 14:50 ` [PATCH AUTOSEL 5.4 17/32] cachefiles: Fix race between read_waiter and read_copier involving op->to_do Sasha Levin
2020-05-22 14:50 ` [PATCH AUTOSEL 5.4 18/32] usb: dwc3: pci: Enable extcon driver for Intel Merrifield Sasha Levin
2020-05-22 14:50 ` [PATCH AUTOSEL 5.4 19/32] usb: phy: twl6030-usb: Fix a resource leak in an error handling path in 'twl6030_usb_probe()' Sasha Levin
2020-05-22 14:50 ` [PATCH AUTOSEL 5.4 20/32] usb: gadget: legacy: fix redundant initialization warnings Sasha Levin
2020-05-22 14:50 ` [PATCH AUTOSEL 5.4 21/32] net: freescale: select CONFIG_FIXED_PHY where needed Sasha Levin
2020-05-22 14:50 ` [PATCH AUTOSEL 5.4 22/32] IB/i40iw: Remove bogus call to netdev_master_upper_dev_get() Sasha Levin
2020-05-22 14:50 ` [PATCH AUTOSEL 5.4 23/32] riscv: stacktrace: Fix undefined reference to `walk_stackframe' Sasha Levin
2020-05-22 14:50 ` [PATCH AUTOSEL 5.4 24/32] clk: ti: am33xx: fix RTC clock parent Sasha Levin
2020-05-22 14:50 ` [PATCH AUTOSEL 5.4 25/32] csky: Fixup msa highest 3 bits mask Sasha Levin
2020-05-22 14:50 ` [PATCH AUTOSEL 5.4 26/32] csky: Fixup perf callchain unwind Sasha Levin
2020-05-22 14:50 ` [PATCH AUTOSEL 5.4 27/32] csky: Fixup remove duplicate irq_disable Sasha Levin
2020-05-22 14:50 ` Sasha Levin [this message]
2020-05-22 14:50 ` [PATCH AUTOSEL 5.4 29/32] cifs: Fix null pointer check in cifs_read Sasha Levin
2020-05-22 14:50 ` [PATCH AUTOSEL 5.4 30/32] csky: Fixup raw_copy_from_user() Sasha Levin
2020-05-22 14:50 ` [PATCH AUTOSEL 5.4 31/32] samples: bpf: Fix build error Sasha Levin
2020-05-22 14:50 ` [PATCH AUTOSEL 5.4 32/32] drivers: net: hamradio: Fix suspicious RCU usage warning in bpqether.c Sasha Levin

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