From: Nishka Dasgupta <nishkadg.linux@gmail.com>
To: tomasz.figa@gmail.com, krzk@kernel.org, linus.walleij@linaro.org,
linux-arm-kernel@lists.infradead.org, linux-gpio@vger.kernel.org,
linux-samsung-soc@vger.kernel.org
Cc: Nishka Dasgupta <nishkadg.linux@gmail.com>
Subject: [PATCH] pinctrl: samsung: samsung: Add of_node_put() before return
Date: Thu, 15 Aug 2019 11:39:14 +0530 [thread overview]
Message-ID: <20190815060914.3572-1-nishkadg.linux@gmail.com> (raw)
Each iteration of for_each_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
three places.
Issue found with Coccinelle.
Signed-off-by: Nishka Dasgupta <nishkadg.linux@gmail.com>
---
drivers/pinctrl/samsung/pinctrl-samsung.c | 9 +++++++--
1 file changed, 7 insertions(+), 2 deletions(-)
diff --git a/drivers/pinctrl/samsung/pinctrl-samsung.c b/drivers/pinctrl/samsung/pinctrl-samsung.c
index de0477bb469d..b24ac8f61ccd 100644
--- a/drivers/pinctrl/samsung/pinctrl-samsung.c
+++ b/drivers/pinctrl/samsung/pinctrl-samsung.c
@@ -272,6 +272,7 @@ static int samsung_dt_node_to_map(struct pinctrl_dev *pctldev,
&reserved_maps, num_maps);
if (ret < 0) {
samsung_dt_free_map(pctldev, *map, *num_maps);
+ of_node_put(np);
return ret;
}
}
@@ -785,8 +786,10 @@ static struct samsung_pmx_func *samsung_pinctrl_create_functions(
if (!of_get_child_count(cfg_np)) {
ret = samsung_pinctrl_create_function(dev, drvdata,
cfg_np, func);
- if (ret < 0)
+ if (ret < 0) {
+ of_node_put(cfg_np);
return ERR_PTR(ret);
+ }
if (ret > 0) {
++func;
++func_cnt;
@@ -797,8 +800,10 @@ static struct samsung_pmx_func *samsung_pinctrl_create_functions(
for_each_child_of_node(cfg_np, func_np) {
ret = samsung_pinctrl_create_function(dev, drvdata,
func_np, func);
- if (ret < 0)
+ if (ret < 0) {
+ of_node_put(func_np);
return ERR_PTR(ret);
+ }
if (ret > 0) {
++func;
++func_cnt;
--
2.19.1
next reply other threads:[~2019-08-15 6:09 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-15 6:09 Nishka Dasgupta [this message]
2019-08-15 6:15 ` [PATCH] pinctrl: samsung: samsung: Add of_node_put() before return Krzysztof Kozlowski
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