clk: tegra: delete unneeded of_node_put
authorJulia Lawall <Julia.Lawall@lip6.fr>
Fri, 9 Oct 2015 17:47:41 +0000 (19:47 +0200)
committerStephen Boyd <sboyd@codeaurora.org>
Mon, 12 Oct 2015 18:52:48 +0000 (11:52 -0700)
for_each_child_of_node performs an of_node_put on each iteration, so
putting an of_node_put before a continue results in a double put.

The semantic match that finds this problem is as follows
(http://coccinelle.lip6.fr):

// <smpl>
@@
expression root,e;
local idexpression child;
iterator name for_each_child_of_node;
@@

 for_each_child_of_node(root, child) {
   ... when != of_node_get(child)
*  of_node_put(child);
   ...
*  continue;
}
// </smpl>

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
drivers/clk/tegra/clk-emc.c

index 138a94b..e1fe8f3 100644 (file)
@@ -491,10 +491,8 @@ struct clk *tegra_clk_register_emc(void __iomem *base, struct device_node *np,
        for_each_child_of_node(np, node) {
                err = of_property_read_u32(node, "nvidia,ram-code",
                                           &node_ram_code);
-               if (err) {
-                       of_node_put(node);
+               if (err)
                        continue;
-               }
 
                /*
                 * Store timings for all ram codes as we cannot read the