hwmon: (nct6775) Drop unsupported fan alarm attributes for NCT6775

NCT6775 does not support alarms for fans 4 and 5. Drop the attributes.

cc: stable@vger.kernel.org # 3.10+
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

1 files changed, 7 insertions, 5 deletions

diff --git a/drivers/hwmon/nct6775.c b/drivers/hwmon/nct6775.c
index 2405ab439e80..99cec1825420 100644
--- a/drivers/hwmon/nct6775.c
+++ b/drivers/hwmon/nct6775.c
@@ -199,7 +199,7 @@ static const s8 NCT6775_ALARM_BITS[] = {
         0, 1, 2, 3, 8, 21, 20, 16,      /* in0.. in7 */
         17, -1, -1, -1, -1, -1, -1,     /* in8..in14 */
         -1,                             /* unused */
-        6, 7, 11, 10, 23,               /* fan1..fan5 */
+        6, 7, 11, -1, -1,               /* fan1..fan5 */
         -1, -1, -1,                     /* unused */
         4, 5, 13, -1, -1, -1,           /* temp1..temp6 */
         12, -1 };                       /* intrusion0, intrusion1 */
@@ -3877,10 +3877,12 @@ static int nct6775_probe(struct platform_device *pdev)
                                                  &sda_fan_input[i].dev_attr);
                         if (err)
                                 goto exit_remove;
-                        err = device_create_file(dev,
-                                                 &sda_fan_alarm[i].dev_attr);
-                        if (err)
-                                goto exit_remove;
+                        if (data->ALARM_BITS[FAN_ALARM_BASE + i] >= 0) {
+                                err = device_create_file(dev,
+                                                &sda_fan_alarm[i].dev_attr);
+                                if (err)
+                                        goto exit_remove;
+                        }
                         if (data->kind != nct6776 &&
                             data->kind != nct6779) {
                                 err = device_create_file(dev,