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pinctrl: nomadik: fix possible object reference leak 

The of_find_device_by_node takes a reference to the struct device
when find the match device ,we should release it when fail.

Signed-off-by: WangBo <wang.bo116@zte.com.cn>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
WangBo 2019-02-15 16:01:36 +08:00 committed by Linus Walleij
parent e003ec6aa9
commit 7c6daeaf0a
1 changed files with 13 additions and 4 deletions
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17
drivers/pinctrl/nomadik/pinctrl-nomadik.c
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@ -1056,17 +1056,22 @@ static struct nmk_gpio_chip *nmk_gpio_populate_chip(struct device_node *np,
}
if (of_property_read_u32(np, "gpio-bank", &id)) {
dev_err(&pdev->dev, "populate: gpio-bank property not found\n");
platform_device_put(gpio_pdev);
return ERR_PTR(-EINVAL);
}
/* Already populated? */
nmk_chip = nmk_gpio_chips[id];
if (nmk_chip)
if (nmk_chip) {
platform_device_put(gpio_pdev);
return nmk_chip;
}
nmk_chip = devm_kzalloc(&pdev->dev, sizeof(*nmk_chip), GFP_KERNEL);
if (!nmk_chip)
if (!nmk_chip) {
platform_device_put(gpio_pdev);
return ERR_PTR(-ENOMEM);
}
nmk_chip->bank = id;
chip = &nmk_chip->chip;
@ -1077,13 +1082,17 @@ static struct nmk_gpio_chip *nmk_gpio_populate_chip(struct device_node *np,
res = platform_get_resource(gpio_pdev, IORESOURCE_MEM, 0);
base = devm_ioremap_resource(&pdev->dev, res);
if (IS_ERR(base))
if (IS_ERR(base)) {
platform_device_put(gpio_pdev);
return ERR_CAST(base);
}
nmk_chip->addr = base;
clk = clk_get(&gpio_pdev->dev, NULL);
if (IS_ERR(clk))
if (IS_ERR(clk)) {
platform_device_put(gpio_pdev);
return (void *) clk;
}
clk_prepare(clk);
nmk_chip->clk = clk;