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hwmon: (ina238) Correctly clamp temperature

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[ Upstream commit 98fd069dd8 ]

ina238_write_temp() was attempting to clamp the user input but was
throwing away the result. Ensure that we clamp the value to the
appropriate range before it is converted into a register value.

Fixes: 0d9f596b1f ("hwmon: (ina238) Modify the calculation formula to adapt to different chips")
Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
Link: https://lore.kernel.org/r/20250829030512.1179998-3-chris.packham@alliedtelesis.co.nz
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Chris Packham
2025-08-29 15:05:10 +12:00
committed by Greg Kroah-Hartman
parent 71895f8bc8
commit db93635601
1 changed files with 1 additions and 1 deletions
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drivers/hwmon/ina238.c
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@@ -481,7 +481,7 @@ static int ina238_write_temp(struct device *dev, u32 attr, long val)
return -EOPNOTSUPP;
/* Signed */
regval = clamp_val(val, -40000, 125000);
val = clamp_val(val, -40000, 125000);
regval = div_s64(val * 10000, data->config->temp_lsb) << data->config->temp_shift;
regval = clamp_val(regval, S16_MIN, S16_MAX) & (0xffff << data->config->temp_shift);