[intel] assert that buffers are not mapped at last unreference.

bufmgr_fake doesn't care about it, but with ttm we would end up with the
buffer remaining referenced until application exit.

diff --git a/src/mesa/drivers/dri/common/dri_bufmgr_fake.c b/src/mesa/drivers/dri/common/dri_bufmgr_fake.c
index 5cd96f0..f022552 100644 (file)
--- a/src/mesa/drivers/dri/common/dri_bufmgr_fake.c
+++ b/src/mesa/drivers/dri/common/dri_bufmgr_fake.c
@@ -665,6 +665,7 @@ dri_fake_bo_unreference(dri_bo *bo)
 
    _glthread_LOCK_MUTEX(bufmgr_fake->mutex);
    if (--bo_fake->refcount == 0) {
+      assert(bo_fake->map_count == 0);
       /* No remaining references, so free it */
       if (bo_fake->block)
         free_block(bufmgr_fake, bo_fake->block);