From: Amitoj Kaur Chawla <amitoj1606@gmail.com>
Date: Mon, 25 Jan 2016 17:23:07 +0000 (+0530)
Subject: memory: tegra: mc: Add missing of_node_put()
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=55bb1d8355ce91662dc8760f24f578db5a595819;p=linux-beck.git

memory: tegra: mc: Add missing of_node_put()

for_each_child_of_node() performs an of_node_get() on each iteration, so
to break out of the loop an of_node_put() is required.

Found using Coccinelle. The semantic patch used for this is as follows:

// <smpl>
@@
expression e;
local idexpression n;
@@

 for_each_child_of_node(..., n) {
   ... when != of_node_put(n)
       when != e = n
(
   return n;
|
+  of_node_put(n);
?  return ...;
)
   ...
 }
// </smpl>

Signed-off-by: Amitoj Kaur Chawla <amitoj1606@gmail.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
---

diff --git a/drivers/memory/tegra/mc.c b/drivers/memory/tegra/mc.c
index 85ce4beb7f03..a4803ac192bb 100644
--- a/drivers/memory/tegra/mc.c
+++ b/drivers/memory/tegra/mc.c
@@ -186,8 +186,10 @@ static int load_timings(struct tegra_mc *mc, struct device_node *node)
 		timing = &mc->timings[i++];
 
 		err = load_one_timing(mc, timing, child);
-		if (err)
+		if (err) {
+			of_node_put(child);
 			return err;
+		}
 	}
 
 	return 0;
@@ -210,9 +212,9 @@ static int tegra_mc_setup_timings(struct tegra_mc *mc)
 			continue;
 
 		err = load_timings(mc, node);
+		of_node_put(node);
 		if (err)
 			return err;
-		of_node_put(node);
 		break;
 	}