[1/2] slimbus: qcom-ngd-ctrl: Add of_node_put() before return

Message ID 20190818093902.29993-2-srinivas.kandagatla@linaro.org
State New
Headers show
Series
  • slimbus: patches(set 1) for 5.4
Related show

Commit Message

Srinivas Kandagatla Aug. 18, 2019, 9:39 a.m.
From: Nishka Dasgupta <nishkadg.linux@gmail.com>


Each iteration of for_each_available_child_of_node puts the previous
node, but in the case of a return from the middle of the loop, there is
no put, thus causing a memory leak. Hence add an of_node_put before the
return in two places.
Issue found with Coccinelle.

Signed-off-by: Nishka Dasgupta <nishkadg.linux@gmail.com>

Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>

---
 drivers/slimbus/qcom-ngd-ctrl.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

-- 
2.21.0

Patch

diff --git a/drivers/slimbus/qcom-ngd-ctrl.c b/drivers/slimbus/qcom-ngd-ctrl.c
index f3585777324c..29fbab55c3b3 100644
--- a/drivers/slimbus/qcom-ngd-ctrl.c
+++ b/drivers/slimbus/qcom-ngd-ctrl.c
@@ -1338,12 +1338,15 @@  static int of_qcom_slim_ngd_register(struct device *parent,
 			continue;
 
 		ngd = kzalloc(sizeof(*ngd), GFP_KERNEL);
-		if (!ngd)
+		if (!ngd) {
+			of_node_put(node);
 			return -ENOMEM;
+		}
 
 		ngd->pdev = platform_device_alloc(QCOM_SLIM_NGD_DRV_NAME, id);
 		if (!ngd->pdev) {
 			kfree(ngd);
+			of_node_put(node);
 			return -ENOMEM;
 		}
 		ngd->id = id;