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pinctrl: samsung: Fix device node refcount leaks in S3C64xx wakeup controller init

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[ Upstream commit 7f028caadf6c37580d0f59c6c094ed09afc04062 ]

In s3c64xx_eint_eint0_init() the for_each_child_of_node() loop is used
with a break to find a matching child node.  Although each iteration of
for_each_child_of_node puts the previous node, but early exit from loop
misses it.  This leads to leak of device node.

Cc: <stable@vger.kernel.org>
Fixes: 61dd72613177 ("pinctrl: Add pinctrl-s3c64xx driver")
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Krzysztof Kozlowski 2019-08-05 18:27:09 +02:00 committed by Greg Kroah-Hartman
parent d7fbce5a24
commit af9b59cb70
1 changed files with 3 additions and 0 deletions
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3
drivers/pinctrl/samsung/pinctrl-s3c64xx.c
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@ -713,6 +713,7 @@ static int s3c64xx_eint_eint0_init(struct samsung_pinctrl_drv_data *d)
data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
if (!data) {
dev_err(dev, "could not allocate memory for wkup eint data\n");
of_node_put(eint0_np);
return -ENOMEM;
}
data->drvdata = d;
@ -723,6 +724,7 @@ static int s3c64xx_eint_eint0_init(struct samsung_pinctrl_drv_data *d)
irq = irq_of_parse_and_map(eint0_np, i);
if (!irq) {
dev_err(dev, "failed to get wakeup EINT IRQ %d\n", i);
of_node_put(eint0_np);
return -ENXIO;
}
@ -730,6 +732,7 @@ static int s3c64xx_eint_eint0_init(struct samsung_pinctrl_drv_data *d)
s3c64xx_eint0_handlers[i],
data);
}
of_node_put(eint0_np);
bank = d->pin_banks;
for (i = 0; i < d->nr_banks; ++i, ++bank) {