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gpio: brcmstb: check return value of gpiochip_irqchip_add()

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Because gpiochip_irqchip_add() may fail, its return value should
be checked.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: Gregory Fong <gregory.0xf0@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Masahiro Yamada 2017-08-10 07:51:27 +09:00 committed by Linus Walleij
parent a863e87c32
commit f89c6eafa3
1 changed files with 5 additions and 4 deletions
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9
drivers/gpio/gpio-brcmstb.c
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@ -339,6 +339,7 @@ static int brcmstb_gpio_irq_setup(struct platform_device *pdev,
struct brcmstb_gpio_priv *priv = bank->parent_priv;
struct device *dev = &pdev->dev;
struct device_node *np = dev->of_node;
int err;
bank->irq_chip.name = dev_name(dev);
bank->irq_chip.irq_mask = brcmstb_gpio_irq_mask;
@ -355,8 +356,6 @@ static int brcmstb_gpio_irq_setup(struct platform_device *pdev,
dev_warn(dev,
"Couldn't get wake IRQ - GPIOs will not be able to wake from sleep");
} else {
int err;
/*
* Set wakeup capability before requesting wakeup
* interrupt, so we can process boot-time "wakeups"
@ -383,8 +382,10 @@ static int brcmstb_gpio_irq_setup(struct platform_device *pdev,
if (priv->can_wake)
bank->irq_chip.irq_set_wake = brcmstb_gpio_irq_set_wake;
gpiochip_irqchip_add(&bank->gc, &bank->irq_chip, 0,
handle_simple_irq, IRQ_TYPE_NONE);
err = gpiochip_irqchip_add(&bank->gc, &bank->irq_chip, 0,
handle_simple_irq, IRQ_TYPE_NONE);
if (err)
return err;
gpiochip_set_chained_irqchip(&bank->gc, &bank->irq_chip,
priv->parent_irq, brcmstb_gpio_irq_handler);