Re: CVS commit: src/sys/arch

[Jukka Ruohonen <jruohonen%iki.fi@localhost>]

On Sat, Feb 06, 2010 at 01:07:08PM -0800, Paul Goyette wrote:
> If it matches a device, and there is also a "native" driver for the 
> underlying i2c controller, then there'll be two devices accessing the 
> same bus.  Bad things (tm) will happen.  This is noted in the BUGS 
> section of the acpismbus(4) man page.

On a related note, a similar warning should be probably added to aiboost(4).
At least on Linux it is known to cause weird problems and lockups if the
iic(4) is being accessed at the same time by a "native" driver (it87?).

It is also a reasonable assumption that things will get worse at this front.
The new ACPI 4.0 standard introduced a "sensor framework" of its own, and my
guess is that consumer PC manufacturers will jump on the bandwagon, trying
to hide these things in the abyss of ACPI.

- Jukka.