From: Ninad Malwade nmalwade@nvidia.com
[ Upstream commit b8d27d2ce8dfc207e4b67b929a86f2be76fbc6ef ]
The shunt sum critical limit register value should be left shifted by one bit as its LSB-0 is a reserved bit.
Fixes: 2057bdfb7184 ("hwmon: (ina3221) Add summation feature support") Signed-off-by: Ninad Malwade nmalwade@nvidia.com Reviewed-by: Thierry Reding treding@nvidia.com Link: https://lore.kernel.org/r/20221108044508.23463-1-nmalwade@nvidia.com Signed-off-by: Guenter Roeck linux@roeck-us.net Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/hwmon/ina3221.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/hwmon/ina3221.c b/drivers/hwmon/ina3221.c index 58d3828e2ec0..14586b2fb17d 100644 --- a/drivers/hwmon/ina3221.c +++ b/drivers/hwmon/ina3221.c @@ -228,7 +228,7 @@ static int ina3221_read_value(struct ina3221_data *ina, unsigned int reg, * Shunt Voltage Sum register has 14-bit value with 1-bit shift * Other Shunt Voltage registers have 12 bits with 3-bit shift */ - if (reg == INA3221_SHUNT_SUM) + if (reg == INA3221_SHUNT_SUM || reg == INA3221_CRIT_SUM) *val = sign_extend32(regval >> 1, 14); else *val = sign_extend32(regval >> 3, 12); @@ -465,7 +465,7 @@ static int ina3221_write_curr(struct device *dev, u32 attr, * SHUNT_SUM: (1 / 40uV) << 1 = 1 / 20uV * SHUNT[1-3]: (1 / 40uV) << 3 = 1 / 5uV */ - if (reg == INA3221_SHUNT_SUM) + if (reg == INA3221_SHUNT_SUM || reg == INA3221_CRIT_SUM) regval = DIV_ROUND_CLOSEST(voltage_uv, 20) & 0xfffe; else regval = DIV_ROUND_CLOSEST(voltage_uv, 5) & 0xfff8;