Jan 25 2016

memory: tegra: tegra124-emc: Add missing of_node_put() 

Author: Amitoj Kaur Chawla <amitoj1606@gmail.com>

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:

// 
@@
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 ...;
)
   ...
 }
// 

Signed-off-by: Amitoj Kaur Chawla 
Signed-off-by: Thierry Reding 

---
 drivers/memory/tegra/tegra124-emc.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)
 
diff --git a/drivers/memory/tegra/tegra124-emc.c b/drivers/memory/tegra/tegra124-emc.c
index 3dac7be..02a6317 100644
--- a/drivers/memory/tegra/tegra124-emc.c
+++ b/drivers/memory/tegra/tegra124-emc.c
@@ -970,8 +970,10 @@ static int tegra_emc_load_timings_from_dt(struct tegra_emc *emc,
 		timing = &emc->timings[i++];
 
 		err = load_one_timing_from_dt(emc, timing, child);
-		if (err)
+		if (err) {
+			of_node_put(child);
 			return err;
+		}
 	}
 
 	sort(emc->timings, emc->num_timings, sizeof(*timing), cmp_timings,

qlambert