[PATCH] check for vtsema before calling into driver output & crtc routines

[Jesse Barnes]

This is a fix for #14444.  Seems to work ok, so unless there are objections 
I'll go ahead and push.

Jesse
-------------- next part --------------
A non-text attachment was scrubbed...
Name: xserver-set-prop-vt-sema-4.patch
Type: text/x-diff
Size: 814 bytes
Desc: not available
URL: <http://lists.x.org/archives/xorg/attachments/20080317/cdf928e5/attachment.patch>