Rename missed instances.

theano/gpuarray/dnn.py

@@ -1592,9 +1592,9 @@ class GpuDnnReduction(DnnBase):
         self.c_axis = self._convert_axis(axis)
         # axis is a list of axes to reduce on
         self.axis = axis
-        if arg and (red_op != 'max' and red_op != 'min'):
+        if return_indices and (red_op != 'max' and red_op != 'min'):
             raise ValueError("Can't request indices for something other than min or max")
-        self.arg = arg
+        self.return_indices = return_indices
 
     def _convert_axis(self, axis):
         if axis is None:
@@ -1623,7 +1623,7 @@ class GpuDnnReduction(DnnBase):
             if not (self.c_axis & (1 << i)):
                 bcast.append(inp.broadcastable[i])
         outs = [inp.type.clone(dtype=self.dtype, broadcastable=bcast)()]
-        if self.arg:
+        if self.return_indices:
             outs.append(GpuArrayType(dtype='uint32', broadcastable=bcast,
                                      context_name=ctx_name)())