hwmon: add support for THMC50 and ADM1022

[firefly-linux-kernel-4.4.55.git] / drivers / hwmon / smsc47b397.c

diff --git a/drivers/hwmon/smsc47b397.c b/drivers/hwmon/smsc47b397.c
index 3b65b0e61c49f51ed3709a5e67f5474a391065fb..45266b30ce1d760f800b79ea6f59dbd7a27d75b3 100644 (file)
--- a/drivers/hwmon/smsc47b397.c
+++ b/drivers/hwmon/smsc47b397.c
@@ -174,6 +174,8 @@ static SENSOR_DEVICE_ATTR(temp4_input, S_IRUGO, show_temp, NULL, 3);
    REG: count of 90kHz pulses / revolution */
 static int fan_from_reg(u16 reg)
 {
+       if (reg == 0 || reg == 0xffff)
+               return 0;
        return 90000 * 60 / reg;
 }