Merge pull request #3935 from poolio/rop_bugs

add missing return to GpuFromHost R_op

Merge pull request #3935 from poolio/rop_bugs
ff9c346e · abergeron · 752d5028 · 0d2f82a5 · ff9c346e
--- a/theano/sandbox/cuda/basic_ops.py
+++ b/theano/sandbox/cuda/basic_ops.py
@@ -152,7 +152,7 @@ class GpuFromHost(GpuOp):
    def R_op(self, inputs, eval_points):
        ev, = eval_points
-        [self(ev)]
+        return [self(ev)]
    def infer_shape(self, node, xshp):
        return xshp