linux-kernel - [PATCH v1 5/5] gpiolib: Replace gpio_suffix

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Message-ID: <20240819132458.208677-6-andriy.shevchenko@linux.intel.com>
Date: Mon, 19 Aug 2024 16:22:47 +0300
From: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
	Bartosz Golaszewski <bartosz.golaszewski@...aro.org>,
	linux-gpio@...r.kernel.org,
	linux-acpi@...r.kernel.org,
	linux-kernel@...r.kernel.org
Cc: Mika Westerberg <mika.westerberg@...ux.intel.com>,
	Linus Walleij <linus.walleij@...aro.org>,
	Bartosz Golaszewski <brgl@...ev.pl>
Subject: [PATCH v1 5/5] gpiolib: Replace gpio_suffix_count with NULL-terminated array

There is no need to have and export the count variable for the array
in question. Instead, make it NULL-terminated.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
---
 drivers/gpio/gpiolib.c |  3 +--
 drivers/gpio/gpiolib.h | 11 +++++------
 2 files changed, 6 insertions(+), 8 deletions(-)

diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c
index 7f6060c5b5e0..08fdf06a258f 100644
--- a/drivers/gpio/gpiolib.c
+++ b/drivers/gpio/gpiolib.c
@@ -91,8 +91,7 @@ DEFINE_STATIC_SRCU(gpio_devices_srcu);
 static DEFINE_MUTEX(gpio_machine_hogs_mutex);
 static LIST_HEAD(gpio_machine_hogs);
 
-const char *const gpio_suffixes[] = { "gpios", "gpio" };
-const size_t gpio_suffix_count = ARRAY_SIZE(gpio_suffixes);
+const char *const gpio_suffixes[] = { "gpios", "gpio", NULL };
 
 static void gpiochip_free_hogs(struct gpio_chip *gc);
 static int gpiochip_add_irqchip(struct gpio_chip *gc,
diff --git a/drivers/gpio/gpiolib.h b/drivers/gpio/gpiolib.h
index d38e83d82796..3c7e80f8a0c5 100644
--- a/drivers/gpio/gpiolib.h
+++ b/drivers/gpio/gpiolib.h
@@ -89,14 +89,13 @@ static inline struct gpio_device *to_gpio_device(struct device *dev)
 	return container_of(dev, struct gpio_device, dev);
 }
 
-/* gpio suffixes used for ACPI and device tree lookup */
+/* GPIO suffixes used for ACPI and device tree lookup */
 extern const char *const gpio_suffixes[];
-extern const size_t gpio_suffix_count;
 
 #define for_each_gpio_property_name(propname, con_id)					\
-	for (unsigned int __i = 0;							\
-	     __i < gpio_suffix_count && ({						\
-		     const char *__gs = gpio_suffixes[__i];				\
+	for (const char * const *__suffixes = gpio_suffixes;				\
+	     *__suffixes && ({								\
+		const char *__gs = *__suffixes;						\
 											\
 		if (con_id)								\
 			snprintf(propname, sizeof(propname), "%s-%s", con_id, __gs);	\
@@ -104,7 +103,7 @@ extern const size_t gpio_suffix_count;
 			snprintf(propname, sizeof(propname), "%s", __gs);		\
 		1;									\
 	     });									\
-	     __i++)
+	     __suffixes++)
 
 /**
  * struct gpio_array - Opaque descriptor for a structure of GPIO array attributes
-- 
2.43.0.rc1.1336.g36b5255a03ac