I compiled a vanilla 3.10.8 kernel on my DNS-323 arm box... still getting this bug:
root@a110755:~# uname -r
3.10.8-orion5x
root@a110755:~# pwmconfig
# pwmconfig revision 5857 (2010-08-22)
This program will search your sensors for pulse width modulation (pwm)
controls, and test each one to see if it controls a fan on
your motherboard. Note that many motherboards do not have pwm
circuitry installed, even if your sensor chip supports pwm.
We will attempt to briefly stop each fan using the pwm controls.
The program will attempt to restore each fan to full speed
after testing. However, it is ** very important ** that you
physically verify that the fans have been to full speed
after the program has completed.
Found the following devices:
hwmon0/device is g760a
Found the following PWM controls:
hwmon0/device/pwm1
[ 382.279864] i2c i2c-0: mv64xxx: I2C bus locked, block: 1, time_left: 0
[ 384.279860] i2c i2c-0: mv64xxx: I2C bus locked, block: 1, time_left: 0
[ 386.279861] i2c i2c-0: mv64xxx: I2C bus locked, block: 1, time_left: 0
[ 388.279859] i2c i2c-0: mv64xxx: I2C bus locked, block: 1, time_left: 0
Giving the fans some time to reach full speed...
Found the following fan sensors:
[ 395.349854] i2c i2c-0: mv64xxx: I2C bus locked, block: 1, time_left: 0
[ 397.349861] i2c i2c-0: mv64xxx: I2C bus locked, block: 1, time_left: 0
[ 399.349853] i2c i2c-0: mv64xxx: I2C bus locked, block: 1, time_left: 0
hwmon0/device/fan1_input current speed: 0 ... skipping!
There are no working fan sensors, all readings are 0.
Make sure you have a 3-wire fan connected.
You may also need to increase the fan divisors.
See doc/fan-divisors for more information.