linux-kernel - [PATCH] gpio: Avoid using pin ranges with !PINCTRL

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Message-Id: <20200330090257.2332864-1-thierry.reding@gmail.com>
Date:   Mon, 30 Mar 2020 11:02:57 +0200
From:   Thierry Reding <thierry.reding@...il.com>
To:     Linus Walleij <linus.walleij@...aro.org>,
        Bartosz Golaszewski <bgolaszewski@...libre.com>
Cc:     linux-gpio@...r.kernel.org, linux-kernel@...r.kernel.org,
        Stephen Rothwell <sfr@...b.auug.org.au>,
        kbuild test robot <lkp@...el.com>
Subject: [PATCH] gpio: Avoid using pin ranges with !PINCTRL

From: Thierry Reding <treding@...dia.com>

Do not use the struct gpio_device's .pin_ranges field if the PINCTRL
Kconfig symbol is not selected to avoid build failures.

Fixes: d2fbe53a806e ("gpio: Support GPIO controllers without pin-ranges")
Reported-by: Stephen Rothwell <sfr@...b.auug.org.au>
Reported-by: kbuild test robot <lkp@...el.com>
Signed-off-by: Thierry Reding <treding@...dia.com>
---
 drivers/gpio/gpiolib.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c
index e6f9def09f55..5c245883c9c5 100644
--- a/drivers/gpio/gpiolib.c
+++ b/drivers/gpio/gpiolib.c
@@ -2753,10 +2753,12 @@ static inline void gpiochip_irqchip_free_valid_mask(struct gpio_chip *gpiochip)
  */
 int gpiochip_generic_request(struct gpio_chip *chip, unsigned offset)
 {
-	if (!list_empty(&chip->gpiodev->pin_ranges))
-		return pinctrl_gpio_request(chip->gpiodev->base + offset);
+#ifdef CONFIG_PINCTRL
+	if (list_empty(&chip->gpiodev->pin_ranges))
+		return 0;
+#endif
 
-	return 0;
+	return pinctrl_gpio_request(chip->gpiodev->base + offset);
 }
 EXPORT_SYMBOL_GPL(gpiochip_generic_request);
 
-- 
2.24.1