acer aspire one fan module (acerhdf) not working with kernel 3.7.5-1

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https://bbs.archlinux.org – Running the old Acer Aspire One (AOA150) and having the same problem. Just upgraded my system after a long while without any problems except the fan's running continuously despite temperatures being well below threshold.   The kernel version here's 3.7.9 now with no change, apparently. I've tweaked the module options and reloaded it many times without effect. I wonder if this is some minor kernel regression back to the days when fan control for these Acers didn't work well. Searches on the net only came up with old references to the issue. This being the only new (HowTos)