[Beignet] [PATCH 2/4] Clear batch buffer pointer after unmap

[Zhenyu Wang]

Fix libdrm warning about unmap the unmapped buffer, as when
batch terminate we will try to do unmap again, but batch has
already been unmapped.

Signed-off-by: Zhenyu Wang <zhenyuw at linux.intel.com>
---
 src/intel/intel_batchbuffer.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/intel/intel_batchbuffer.c b/src/intel/intel_batchbuffer.c
index d3da3cc..ba6b05f 100644
--- a/src/intel/intel_batchbuffer.c
+++ b/src/intel/intel_batchbuffer.c
@@ -118,8 +118,9 @@ intel_batchbuffer_flush(intel_batchbuffer_t *batch)
 
   *(uint32_t*)batch->ptr = MI_BATCH_BUFFER_END;
   batch->ptr += 4;
-  dri_bo_unmap(batch->buffer);
   used = batch->ptr - batch->map;
+  dri_bo_unmap(batch->buffer);
+  batch->ptr = batch->map = NULL;
 
   if (!is_locked)
     intel_driver_lock_hardware(batch->intel);
-- 
2.1.1