Messages in this thread | | | Date | Thu, 13 May 2010 09:16:31 -0700 (PDT) | From | Linus Torvalds <> | Subject | Re: [git pull] Input updates for 2.6.34-rc6 |
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On Thu, 13 May 2010, Dmitry Torokhov wrote: > > 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)?
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.
Linus
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