Hi
I've just picked up linux-2.6.27-rc5 and it would appear fan speeds are
reported incorrectly now. We have it8712 rev7 on our systems. We see
speeds of around 40K RPM (!!).
The following hack fixes it - it just punts 16 bit fan support out to
rev8. It would appear our it8172 does not have 16 bit tacho support. Or
if it does, the driver isn't enabling it properly.
--- drivers/hwmon/it87.c.orig 2008-09-05 15:51:11.000000000 +0100
+++ drivers/hwmon/it87.c 2008-09-05 15:51:53.000000000 +0100
@@ -283,7 +283,7 @@
IT8712F Datasheet 0.9.1, section 8.3.5 indicates 7h ==
Version I.
These are the first revisions with 16bit tachometer support.
*/
return (data->type == it87 && data->revision >= 0x03)
- || (data->type == it8712 && data->revision >= 0x07)
+ || (data->type == it8712 && data->revision >= 0x08)
|| data->type == it8716
|| data->type == it8718;
Cheers
John
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