From 90205c6cbb8fd9880bf798903a99f5b8903455e2 Mon Sep 17 00:00:00 2001 From: Jean Delvare Date: Sat, 23 Jun 2007 14:58:22 +0200 Subject: hwmon/smsc47b397: Don't report missing fans as spinning at 82 RPM Also protects ourselves against a possible division by zero. Signed-off-by: Jean Delvare Signed-off-by: Mark M. Hoffman --- drivers/hwmon/smsc47b397.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'drivers/hwmon') diff --git a/drivers/hwmon/smsc47b397.c b/drivers/hwmon/smsc47b397.c index 3b65b0e61c4..45266b30ce1 100644 --- 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; } -- cgit v1.2.3-70-g09d2