diff options
Diffstat (limited to 'drivers/hwmon/adc128d818.c')
| -rw-r--r-- | drivers/hwmon/adc128d818.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/hwmon/adc128d818.c b/drivers/hwmon/adc128d818.c index 0625e50..ad2b47e 100644 --- a/drivers/hwmon/adc128d818.c +++ b/drivers/hwmon/adc128d818.c @@ -27,6 +27,7 @@ #include <linux/err.h> #include <linux/regulator/consumer.h> #include <linux/mutex.h> +#include <linux/bitops.h> /* Addresses to scan * The chip also supports addresses 0x35..0x37. Don't scan those addresses @@ -189,7 +190,7 @@ static ssize_t adc128_show_temp(struct device *dev, if (IS_ERR(data)) return PTR_ERR(data); - temp = (data->temp[index] << 7) >> 7; /* sign extend */ + temp = sign_extend32(data->temp[index], 8); return sprintf(buf, "%d\n", temp * 500);/* 0.5 degrees C resolution */ } |