Re: [PATCH 4/12] atyfb: Remove unneeded calls to wait_for_idle

["Ville Syrjälä" <syrjala@sci.fi>]

On Mon, May 01, 2006 at 01:20:23PM +0300, Ville Syrjälä wrote:
> On Sat, Apr 29, 2006 at 08:32:34AM +0800, Antonino A. Daplas wrote:
> > The drawing functions of atyfb is unecessary syncing the GPU which is affecting
> > performance.  Remove the calls, any direct access by fbcon to the framebuffer
> > will always be preceeded by a call to atyfb_sync().
> 
> Still works on my Mobility :) I'll try to test with older chips later 
> this week, but I don't expect any problems. AFAIK the only case when an 
> engine sync is necessary is 3D/scaler <-> 2D transition on pre-Rage Pro 
> chips.

Now also tested with VT2, Rage II+ and IIC. No problems.

-- 
Ville Syrjälä
syrjala@sci.fi
http://www.sci.fi/~syrjala/


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