Author: Julia Lawall <Julia.Lawall@lip6.fr> Of_node_put supports NULL as its argument, so the initial test is not necessary. Suggested by Uwe Kleine-König. The semantic patch that fixes this problem is as follows: (http://coccinelle.lip6.fr/) // @@ expression e; @@ -if (e) of_node_put(e); // Signed-off-by: Julia Lawall Reviewed-by: Michal Simek Signed-off-by: David S. Miller — drivers/net/ethernet/xilinx/xilinx_axienet_main.c | 3 …