On Dec 27, 2010, at 12:16 PM, Ville Syrjälä wrote:
On Mon, Dec 27, 2010 at 12:58:10AM +0100, Mario Kleiner wrote:
2. There are gpu's firing spurious vblank irq's as soon as you enable
irq's
You're sure this isn't simply a matter of the driver forgetting to ack
the irq just before enabling it?
Good point. This was on radeon. I can't remember for certain if it
happened always, or only frequently. I can check that later this week
when i'm back at the test machine.
Anyway, it's good to be robust against such problems, regardless if
it is gpu quirks or driver bugs. The current implementation would
filter the redundant vblank irq and DRM_DEBUG a message if the
drm.debug parameter is set.
thanks,
-mario
--
Ville Syrjälä
syrj...@sci.fi
http://www.sci.fi/~syrjala/
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Mario Kleiner
Max Planck Institute for Biological Cybernetics
Spemannstr. 38
72076 Tuebingen
Germany
e-mail: mario.klei...@tuebingen.mpg.de
office: +49 (0)7071/601-1623
fax: +49 (0)7071/601-616
www: http://www.kyb.tuebingen.mpg.de/~kleinerm
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over public relations, for Nature cannot be fooled."
(Richard Feynman)
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