On Thu, 13 May 2010 09:16:31 -0700 (PDT) Linus Torvalds wrote:

On Thu, 13 May 2010, Dmitry Torokhov wrote:

quoted

From what I remember (it was a few weeks old thread) we were hanging
when trying to read from the controller in i8042_flush(). Normally, if
controller isn't there we'd get a stream of 0xff which will never
"clear" and so after 32 reads we give up and abort controller
initialization. But on Bastien's box it just sits there.

Is there a web interface to some archive for linux-input (or was this 
thread on lkml)?

From Jan. 20, on lkml.

See http://lkml.org/lkml/2010/1/20/254

Anyway, the fact that apparently pressing the power button makes it come 
alive again implies that it's likely SCI/SMI-related. Which is not 
entirely unexpected if there is some crazy SMM thing going on. But 
presumably whatever buggy Apple code is _supposed_ to work for Windows, so 
I wonder what bug that quite simple status/data register read could 
possibly trigger.

Is it the status read or the data read that causes problems, and is it the 
first one or after doing a few? A couple of printk's in that i8042_flush() 
routine should tell us.

---
~Randy
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