1 files changed, 8 insertions, 11 deletions

diff --git a/drivers/hwmon/applesmc.c b/drivers/hwmon/applesmc.c
index f41585ecbe2b..75f87f125dac 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,