From 4538bfbf2d9f1fc48c07ac0cc0ee58716fe7fe96 Mon Sep 17 00:00:00 2001 From: Jared Bents Date: Fri, 18 Nov 2016 22:20:38 -0600 Subject: [PATCH] hwmon: (amc6821) sign extension temperature Converts the unsigned temperature values from the i2c read to be sign extended as defined in the datasheet so that negative temperatures are properly read. Fixes: 28e6274d8fa67 ("hwmon: (amc6821) Avoid forward declaration") Signed-off-by: Jared Bents Signed-off-by: Matt Weber [groeck: Dropped unnecessary continuation line] Signed-off-by: Guenter Roeck --- drivers/hwmon/amc6821.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/hwmon/amc6821.c b/drivers/hwmon/amc6821.c index 12e851a5af48..46b4e35fd555 100644 --- a/drivers/hwmon/amc6821.c +++ b/drivers/hwmon/amc6821.c @@ -188,8 +188,8 @@ static struct amc6821_data *amc6821_update_device(struct device *dev) !data->valid) { for (i = 0; i < TEMP_IDX_LEN; i++) - data->temp[i] = i2c_smbus_read_byte_data(client, - temp_reg[i]); + data->temp[i] = (int8_t)i2c_smbus_read_byte_data( + client, temp_reg[i]); data->stat1 = i2c_smbus_read_byte_data(client, AMC6821_REG_STAT1);