Fixed 1 test.

theano/tensor/signal/pool.py

@@ -1060,7 +1060,7 @@ class DownsampleFactorMaxGradGrad(OpenMPOp):
         img_cols = x.shape[-1] + 2 * pd1
 
         # pad the image and its gradients
-        if pd0 == 0 and pd1 == 0:
+        if pd0 != 0 and pd1 != 0:
             y_padded = numpy.zeros(
                 (x.shape[0], x.shape[1], img_rows, img_cols),
                 dtype=x.dtype) + x.min() - 1

theano/tensor/signal/tests/test_pool.py

@@ -884,5 +884,6 @@ class TestDownsampleFactorMax(utt.InferShapeTester):
                 assert any(isinstance(n.op, AveragePoolGrad)
                            for n in f.maker.fgraph.toposort())
 
+
 if __name__ == '__main__':
     unittest.main()