On Thu, 7 Apr 2011 01:01:18 -0700, D.B. Tsai wrote: > Thank you for clarification. But is it possible that when I/O ports is > controlled by motherboard, the kernels can still "read" the > information from the I/O ports rather than read and write data to I/O > ports? I think in this case, at least, I can monitor my fan speed > without really controlling the ports, and I think it's still safe. Please don't top-post. Unfortunately not, because almost all hwmon chips use an index/data I/O port pair for register access. So you need to write to the index I/O port even for register reads. And non-synchronized concurrent access to such I/O port pair is disastrous. -- Jean Delvare _______________________________________________ lm-sensors mailing list lm-sensors@xxxxxxxxxxxxxx http://lists.lm-sensors.org/mailman/listinfo/lm-sensors
