diff options
Diffstat (limited to 'drivers/hwmon/applesmc.c')
| -rw-r--r-- | drivers/hwmon/applesmc.c | 19 |
1 files changed, 8 insertions, 11 deletions
diff --git a/drivers/hwmon/applesmc.c b/drivers/hwmon/applesmc.c index f41585ecbe2..75f87f125da 100644 --- a/drivers/hwmon/applesmc.c +++ b/drivers/hwmon/applesmc.c @@ -80,6 +80,8 @@ #define FANS_MANUAL "FS! " /* r-w ui16 */ #define FAN_ID_FMT "F%dID" /* r-o char[16] */ +#define TEMP_SENSOR_TYPE "sp78" + /* List of keys used to read/write fan speeds */ static const char *const fan_speed_fmt[] = { "F%dAc", /* actual speed */ @@ -720,27 +722,22 @@ static ssize_t applesmc_show_temperature(struct device *dev, int index = smcreg.temp_begin + to_index(devattr); const struct applesmc_entry *entry; int ret; - u8 buffer[2]; - unsigned int temp; + s16 value; + int temp; entry = applesmc_get_entry_by_index(index); if (IS_ERR(entry)) return PTR_ERR(entry); - if (entry->len > 2) + if (strcmp(entry->type, TEMP_SENSOR_TYPE)) return -EINVAL; - ret = applesmc_read_entry(entry, buffer, entry->len); + ret = applesmc_read_s16(entry->key, &value); if (ret) return ret; - if (entry->len == 2) { - temp = buffer[0] * 1000; - temp += (buffer[1] >> 6) * 250; - } else { - temp = buffer[0] * 4000; - } + temp = 250 * (value >> 6); - return snprintf(sysfsbuf, PAGE_SIZE, "%u\n", temp); + return snprintf(sysfsbuf, PAGE_SIZE, "%d\n", temp); } static ssize_t applesmc_show_fan_speed(struct device *dev, |