http://bugzilla.kernel.org/show_bug.cgi?id=6315





------- Additional Comments From [EMAIL PROTECTED]  2006-04-24 00:03 -------
Frans, yes the breakage was more or less expected.

What you both observed confirms that something is accessing the SMBus host
controller behing the i2c-i801 driver's back. That something is acquiring the
hardware semaphore (it's almost automatic) but does NOT properly release it when
done. This semaphore can only be used if all users play fair. Here, the i2c-i801
driver (with the "use INUSE_STS" patch) will timeout on every access, waiting
for the semaphore, as soon as the other resource user accessed the device once.

Don't you have an "SMBus semaphore reset" message in your logs? If you have it,
it should be printed just once, as soon as the i2c-i801 driver is loaded.

You can revert the "use INUSE_STS" patch for now, so that the i2c-i801 driver is
again useable. I need some time to think of the next step.


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