System Environment:
--------------------------

--Platform: 945G


--2D driver:
commit 548d4c0f979a72eac5d0c9c76da12f0bd05e64e1 

--3D driver:
commit 990e010394a2685c1daeaef61cf4f7e2a0ba419e

--Xserver:
commit cf20df39cc78203d17b99223908af388ecbf7d0e 

--Drm
commit b44f2da380e78769b58c751e81f376f0fa1f48aa 

--Kernel:
2.6.23.1


Bug detailed description:
-------------------------
create XvMCBlockArray and then destroy it with XvMCDestroyBlocks will fail
seems following patch will fix this:

diff --git a/src/xvmc/intel_xvmc.c b/src/xvmc/intel_xvmc.c
index 1be8cc6..3c14f73 100644
--- a/src/xvmc/intel_xvmc.c
+++ b/src/xvmc/intel_xvmc.c
@@ -513,7 +513,7 @@ Status XvMCCreateBlocks(Display *display
  */
 Status XvMCDestroyBlocks(Display *display, XvMCBlockArray *block)
 {
-    if (!display || block)
+    if (!display || !block)
         return BadValue;

     if (block->blocks)



Reproduce steps:
----------------
1. enable XvMC in xorg.conf
2. start X
3. compile and run attached case



Current result:
----------------
failed to destroy blocks created


Expected result:
----------------
should destroy blocks created successfully