[<prev] [next>] [thread-next>] [day] [month] [year] [list]
Message-Id: <20240818194401.172248-1-chou.cosmo@gmail.com>
Date: Mon, 19 Aug 2024 03:44:01 +0800
From: Cosmo Chou <chou.cosmo@...il.com>
To: linux@...ck-us.net,
jdelvare@...e.com,
chou.cosmo@...il.com
Cc: linux-hwmon@...r.kernel.org,
linux-kernel@...r.kernel.org,
cosmo.chou@...ntatw.com
Subject: [PATCH] hwmon: (pt5161l) Fix invalid temperature reading
The temperature reading function was using a signed long for the ADC
code, which could lead to mishandling of invalid codes on 32-bit
platforms. This allowed out-of-range ADC codes to be incorrectly
interpreted as valid values and used in temperature calculations.
Change adc_code to u32 to ensure that invalid ADC codes are correctly
identified on all platforms.
Fixes: 1b2ca93cd059 ("hwmon: Add driver for Astera Labs PT5161L retimer")
Signed-off-by: Cosmo Chou <chou.cosmo@...il.com>
---
drivers/hwmon/pt5161l.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/hwmon/pt5161l.c b/drivers/hwmon/pt5161l.c
index b0d58a26d499..46dd5c1723cf 100644
--- a/drivers/hwmon/pt5161l.c
+++ b/drivers/hwmon/pt5161l.c
@@ -427,7 +427,7 @@ static int pt5161l_read(struct device *dev, enum hwmon_sensor_types type,
struct pt5161l_data *data = dev_get_drvdata(dev);
int ret;
u8 buf[8];
- long adc_code;
+ u32 adc_code;
switch (attr) {
case hwmon_temp_input:
--
2.34.1
Powered by blists - more mailing lists