Revert "Revert "Merge branch 'drm-gem'""

This reverts commit 7c81124d7c4a4d1da9f48cbf7e82ab1a3a970a7a.
diff --git a/src/mesa/drivers/dri/i965/brw_wm.c b/src/mesa/drivers/dri/i965/brw_wm.c
index a470a25..361312c 100644
--- a/src/mesa/drivers/dri/i965/brw_wm.c
+++ b/src/mesa/drivers/dri/i965/brw_wm.c
@@ -322,7 +322,7 @@
 }
 
 
-static int brw_prepare_wm_prog( struct brw_context *brw )
+static void brw_prepare_wm_prog(struct brw_context *brw)
 {
    struct brw_wm_prog_key key;
    struct brw_fragment_program *fp = (struct brw_fragment_program *)
@@ -339,8 +339,6 @@
 				      &brw->wm.prog_data);
    if (brw->wm.prog_bo == NULL)
       do_wm_prog(brw, fp, &key);
-
-   return dri_bufmgr_check_aperture_space(brw->wm.prog_bo);
 }