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pinctrl: freescale: imx: Add of_node_put() before return

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Each iteration of for_each_child_of_node() puts the previous node;
however, in the case of a return from the middle of the loop, there is no
put, thus causing a memory leak. Hence put of_node_put() statements as
required before two mid-loop return statements.
Issue found with Coccinelle.

Signed-off-by: Nishka Dasgupta <nishkadg.linux@gmail.com>
Link: https://lore.kernel.org/r/20190808074720.15754-1-nishkadg.linux@gmail.com
Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Nishka Dasgupta 2019-08-08 13:17:20 +05:30 committed by Linus Walleij
parent 5a6bc29032
commit bf4b87b0d0
1 changed files with 10 additions and 3 deletions
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13
drivers/pinctrl/freescale/pinctrl-imx.c
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@ -672,8 +672,10 @@ static int imx_pinctrl_parse_functions(struct device_node *np,
grp = devm_kzalloc(ipctl->dev, sizeof(struct group_desc),
GFP_KERNEL);
if (!grp)
if (!grp) {
of_node_put(child);
return -ENOMEM;
}
mutex_lock(&ipctl->mutex);
radix_tree_insert(&pctl->pin_group_tree,
@ -697,12 +699,17 @@ static bool imx_pinctrl_dt_is_flat_functions(struct device_node *np)
struct device_node *pinctrl_np;
for_each_child_of_node(np, function_np) {
if (of_property_read_bool(function_np, "fsl,pins"))
if (of_property_read_bool(function_np, "fsl,pins")) {
of_node_put(function_np);
return true;
}
for_each_child_of_node(function_np, pinctrl_np) {
if (of_property_read_bool(pinctrl_np, "fsl,pins"))
if (of_property_read_bool(pinctrl_np, "fsl,pins")) {
of_node_put(pinctrl_np);
of_node_put(function_np);
return false;
}
}
}