[PATCH] drm: reduce default drm vblank off delay to 50ms

Daniel Vetter daniel at ffwll.ch
Tue Oct 30 12:20:44 PDT 2012

On Tue, Oct 30, 2012 at 8:09 PM, Jesse Barnes <jbarnes at virtuousgeek.org> wrote:
> People keep whining about this, but no one seems to send a patch.  This
> *ought* to be safe now that we've dealt with the hw races in Mario's
> updated code, and fixed the bugs we know about in VT switch, DPMS, and
> multi-head configuraions.
> Signed-off-by: Jesse Barnes <jbarnes at virtuousgeek.org>

Afaik the fundamental race of enabling the vblank is still there, so
this is just duct-tape. And our hw has the required registers (on
gen5+ at least) to close this race for real and abolish all "disable
vblank irq later to paper over races and smooth things out). Hence I
think we should dtrt and so

Nacked-by: Daniel Vetter <daniel at ffwll.ch>

Also discussed with Jesse on irc, we've had fun ;-)
Daniel Vetter
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 - http://blog.ffwll.ch

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