Re: Odd piixpm behavior

[Paul Goyette <paul%whooppee.com@localhost>]

On Sat, 14 Jan 2012, Paul Goyette wrote:

> While trying to look into another problem (with the sdtemp(4) modular 
> driver), I noticed something rather strange...
>
> I have three systems with different but similar ASUS motherboards:
>
>         M4A88T-M            AMD 880G / SB710
>         M4A88TD-M           AMD 880G / SB850
>         M4A88TD-V EVO/USB3  AMD 880G / SB850
>
> Under NetBSD 5.99.55, the i2c bus was disabled:
>
>         piixpm0 at pci0 dev 20 function 0
>         piixpm0: vendor 0x1002 product 0x4385 (rev. 0x41)
>         piixpm0: SMBus disabled
>
> Under NetBSD 5.99.59, it gets probed normally:
>
>         piixpm0 at pci0 dev 20 function 0
>         piixpm0: vendor 0x1002 product 0x4385 (rev. 0x41)
>         iic0 at piixpm0: I2C bus
>
> Yet under NetBSD 5.99.60, it once again is disabled!

And now it is working correctly in 5.99.63

> Clues?


BTW, I have filed PR kern/45890 to keep track of this problem.


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