piix4 fails to reset? (ticket #1078)

Joe Drew jdrew at somanetworks.com
Thu Dec 19 22:14:36 CET 2002

On Thu, 2002-12-19 at 15:05, Joe Drew wrote:
> >From a module compiled with debug information:
> i2c-piix4.o: Transaction (pre): CNT=00, CMD=19, ADD=78, DAT0=25, DAT1=00
> i2c-piix4.o: SMBus busy (01). Resetting... 
> i2c-piix4.o: Failed! (01)
> It seems like the i2c bus is stuck, or the piix4 is in a pooched state.
> Why would this be, and what can I do about it?

I should have said, rather, "Why did this happen, and what can I do to
prevent it in the future?" We've the knowledge to hack the drivers here,
but we just don't know enough about SMBus to know what the problem
probably is.

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