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Subject[PATCH] pinctrl: nuvoton: Add missing fwnode_handle_put in wpcm450_gpio_register
Date
In one of the error paths of the device_for_each_child_node() loop
in wpcm450_gpio_register, add missing call to fwnode_handle_put.

Signed-off-by: Peng Wu <wupeng58@huawei.com>
---
drivers/pinctrl/nuvoton/pinctrl-wpcm450.c | 23 +++++++++++++++++------
1 file changed, 17 insertions(+), 6 deletions(-)

diff --git a/drivers/pinctrl/nuvoton/pinctrl-wpcm450.c b/drivers/pinctrl/nuvoton/pinctrl-wpcm450.c
index 0dbeb91f0bf2..de4388b512d7 100644
--- a/drivers/pinctrl/nuvoton/pinctrl-wpcm450.c
+++ b/drivers/pinctrl/nuvoton/pinctrl-wpcm450.c
@@ -1038,15 +1038,19 @@ static int wpcm450_gpio_register(struct platform_device *pdev,
continue;

ret = fwnode_property_read_u32(child, "reg", &reg);
- if (ret < 0)
+ if (ret < 0) {
+ fwnode_handle_put(child);
return ret;
+ }

gpio = &pctrl->gpio_bank[reg];
gpio->pctrl = pctrl;

- if (reg >= WPCM450_NUM_BANKS)
+ if (reg >= WPCM450_NUM_BANKS) {
+ fwnode_handle_put(child);
return dev_err_probe(dev, -EINVAL,
- "GPIO index %d out of range!\n", reg);
+ "GPIO index %d out of range!\n", reg);
+ }

bank = &wpcm450_banks[reg];
gpio->bank = bank;
@@ -1060,8 +1064,10 @@ static int wpcm450_gpio_register(struct platform_device *pdev,
}
ret = bgpio_init(&gpio->gc, dev, 4,
dat, set, NULL, dirout, NULL, flags);
- if (ret < 0)
+ if (ret < 0) {
+ fwnode_handle_put(child);
return dev_err_probe(dev, ret, "GPIO initialization failed\n");
+ }

gpio->gc.ngpio = bank->length;
gpio->gc.set_config = wpcm450_gpio_set_config;
@@ -1074,8 +1080,11 @@ static int wpcm450_gpio_register(struct platform_device *pdev,
girq->parent_handler = wpcm450_gpio_irqhandler;
girq->parents = devm_kcalloc(dev, WPCM450_NUM_GPIO_IRQS,
sizeof(*girq->parents), GFP_KERNEL);
- if (!girq->parents)
+ if (!girq->parents) {
+ fwnode_handle_put(child);
return -ENOMEM;
+ }
+
girq->default_type = IRQ_TYPE_NONE;
girq->handler = handle_bad_irq;

@@ -1091,8 +1100,10 @@ static int wpcm450_gpio_register(struct platform_device *pdev,
}

ret = devm_gpiochip_add_data(dev, &gpio->gc, gpio);
- if (ret)
+ if (ret) {
+ fwnode_handle_put(child);
return dev_err_probe(dev, ret, "Failed to add GPIO chip\n");
+ }
}

return 0;
--
2.17.1
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