gpio: brcmstb: check return value of gpiochip_irqchip_add()
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>
diff --git a/drivers/gpio/gpio-brcmstb.c b/drivers/gpio/gpio-brcmstb.c
index 73f2c3b..dd0308c 100644
--- a/drivers/gpio/gpio-brcmstb.c
+++ b/drivers/gpio/gpio-brcmstb.c
@@ -339,6 +339,7 @@
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 @@
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 @@
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);