From: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Date: Wed, 27 Sep 2023 14:29:22 +0000 (+0200)
Subject: gpiolib: add support for scope-based management to gpio_device
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=9e4555d1e54a;p=linux.git

gpiolib: add support for scope-based management to gpio_device

As the few users that need to get the reference to the GPIO device often
release it right after inspecting its properties, let's add support for
the automatic reference release to struct gpio_device.

Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---

diff --git a/include/linux/gpio/driver.h b/include/linux/gpio/driver.h
index a2060dc3344bd..1cedbc3d3200a 100644
--- a/include/linux/gpio/driver.h
+++ b/include/linux/gpio/driver.h
@@ -3,6 +3,8 @@
 #define __LINUX_GPIO_DRIVER_H
 
 #include <linux/bits.h>
+#include <linux/cleanup.h>
+#include <linux/err.h>
 #include <linux/irqchip/chained_irq.h>
 #include <linux/irqdomain.h>
 #include <linux/irqhandler.h>
@@ -609,6 +611,9 @@ struct gpio_chip *gpiochip_find(void *data,
 struct gpio_device *gpio_device_get(struct gpio_device *gdev);
 void gpio_device_put(struct gpio_device *gdev);
 
+DEFINE_FREE(gpio_device_put, struct gpio_device *,
+	    if (IS_ERR_OR_NULL(_T)) gpio_device_put(_T));
+
 bool gpiochip_line_is_irq(struct gpio_chip *gc, unsigned int offset);
 int gpiochip_reqres_irq(struct gpio_chip *gc, unsigned int offset);
 void gpiochip_relres_irq(struct gpio_chip *gc, unsigned int offset);