linux-kernel - [PATCH 5.12 476/677] gpio: guard gpiochip_irqchip_add_domain() with GPIOLIB

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Message-Id: <20210512144853.166617268@linuxfoundation.org>
Date:   Wed, 12 May 2021 16:48:42 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Michael Walle <michael@...le.cc>,
        Álvaro Fernández Rojas 
        <noltari@...il.com>, Linus Walleij <linus.walleij@...aro.org>,
        Bartosz Golaszewski <bgolaszewski@...libre.com>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.12 476/677] gpio: guard gpiochip_irqchip_add_domain() with GPIOLIB_IRQCHIP

From: Álvaro Fernández Rojas <noltari@...il.com>

[ Upstream commit 9c7d24693d864f90b27aad5d15fbfe226c02898b ]

The current code doesn't check if GPIOLIB_IRQCHIP is enabled, which results in
a compilation error when trying to build gpio-regmap if CONFIG_GPIOLIB_IRQCHIP
isn't enabled.

Fixes: 6a45b0e2589f ("gpiolib: Introduce gpiochip_irqchip_add_domain()")
Suggested-by: Michael Walle <michael@...le.cc>
Signed-off-by: Álvaro Fernández Rojas <noltari@...il.com>
Reviewed-by: Linus Walleij <linus.walleij@...aro.org>
Reviewed-by: Michael Walle <michael@...le.cc>
Acked-by: Bartosz Golaszewski <bgolaszewski@...libre.com>
Link: https://lore.kernel.org/r/20210324081923.20379-2-noltari@gmail.com
Signed-off-by: Linus Walleij <linus.walleij@...aro.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 include/linux/gpio/driver.h | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/include/linux/gpio/driver.h b/include/linux/gpio/driver.h
index 286de0520574..ecf0032a0995 100644
--- a/include/linux/gpio/driver.h
+++ b/include/linux/gpio/driver.h
@@ -624,8 +624,17 @@ void gpiochip_irq_domain_deactivate(struct irq_domain *domain,
 bool gpiochip_irqchip_irq_valid(const struct gpio_chip *gc,
 				unsigned int offset);
 
+#ifdef CONFIG_GPIOLIB_IRQCHIP
 int gpiochip_irqchip_add_domain(struct gpio_chip *gc,
 				struct irq_domain *domain);
+#else
+static inline int gpiochip_irqchip_add_domain(struct gpio_chip *gc,
+					      struct irq_domain *domain)
+{
+	WARN_ON(1);
+	return -EINVAL;
+}
+#endif
 
 int gpiochip_generic_request(struct gpio_chip *gc, unsigned int offset);
 void gpiochip_generic_free(struct gpio_chip *gc, unsigned int offset);
-- 
2.30.2