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Message-Id: <20230207142952.51844-13-andriy.shevchenko@linux.intel.com>
Date:   Tue,  7 Feb 2023 16:29:52 +0200
From:   Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Linus Walleij <linus.walleij@...aro.org>,
        Arnd Bergmann <arnd@...db.de>,
        Bartosz Golaszewski <bartosz.golaszewski@...aro.org>,
        Tony Lindgren <tony@...mide.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        Geert Uytterhoeven <geert@...ux-m68k.org>,
        Christophe Leroy <christophe.leroy@...roup.eu>,
        Michael Ellerman <mpe@...erman.id.au>,
        Devarsh Thakkar <devarsht@...com>,
        Dmitry Torokhov <dmitry.torokhov@...il.com>,
        Stefan Schmidt <stefan@...enfreihafen.org>,
        Miquel Raynal <miquel.raynal@...tlin.com>,
        linux-gpio@...r.kernel.org, linux-doc@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        linux-doc-tw-discuss@...ts.sourceforge.net,
        linux-arm-kernel@...ts.infradead.org, linux-omap@...r.kernel.org,
        linux-samsung-soc@...r.kernel.org, linux-m68k@...ts.linux-m68k.org,
        linuxppc-dev@...ts.ozlabs.org, linux-sh@...r.kernel.org,
        linux-acpi@...r.kernel.org, linux-input@...r.kernel.org,
        linux-media@...r.kernel.org, linux-wpan@...r.kernel.org,
        netdev@...r.kernel.org, linux-wireless@...r.kernel.org,
        brcm80211-dev-list.pdl@...adcom.com,
        SHA-cyfmac-dev-list@...ineon.com, linux-arch@...r.kernel.org,
        devicetree@...r.kernel.org
Cc:     Bartosz Golaszewski <brgl@...ev.pl>,
        Jonathan Corbet <corbet@....net>, Alex Shi <alexs@...nel.org>,
        Yanteng Si <siyanteng@...ngson.cn>,
        Hu Haowen <src.res@...il.cn>,
        Russell King <linux@...linux.org.uk>,
        Aaro Koskinen <aaro.koskinen@....fi>,
        Janusz Krzysztofik <jmkrzyszt@...il.com>,
        Andrew Lunn <andrew@...n.ch>,
        Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>,
        Gregory Clement <gregory.clement@...tlin.com>,
        Alim Akhtar <alim.akhtar@...sung.com>,
        Nicholas Piggin <npiggin@...il.com>,
        Yoshinori Sato <ysato@...rs.sourceforge.jp>,
        Rich Felker <dalias@...c.org>,
        Mun Yew Tham <mun.yew.tham@...el.com>,
        Keerthy <j-keerthy@...com>,
        Mika Westerberg <mika.westerberg@...ux.intel.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Alexander Aring <alex.aring@...il.com>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Arend van Spriel <aspriel@...il.com>,
        Franky Lin <franky.lin@...adcom.com>,
        Hante Meuleman <hante.meuleman@...adcom.com>,
        Kalle Valo <kvalo@...nel.org>, Qiang Zhao <qiang.zhao@....com>,
        Li Yang <leoyang.li@....com>, Lee Jones <lee@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Frank Rowand <frowand.list@...il.com>
Subject: [PATCH v3 12/12] gpiolib: Clean up headers

There is a few things done:
- include only the headers we are direct user of
- when pointer is in use, provide a forward declaration
- add missing headers
- group generic headers and subsystem headers
- sort each group alphabetically

Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
---
 drivers/gpio/gpiolib-acpi.c   | 10 ++++++----
 drivers/gpio/gpiolib-acpi.h   |  1 -
 drivers/gpio/gpiolib-of.c     |  6 ++++--
 drivers/gpio/gpiolib-of.h     |  1 -
 drivers/gpio/gpiolib-swnode.c |  5 +++--
 drivers/gpio/gpiolib-sysfs.c  | 21 ++++++++++++++++-----
 drivers/gpio/gpiolib.c        |  9 ++++++---
 include/linux/gpio.h          |  9 +++------
 include/linux/gpio/consumer.h | 14 ++++++++++----
 include/linux/gpio/driver.h   | 30 +++++++++++++++++++++++-------
 10 files changed, 71 insertions(+), 35 deletions(-)

diff --git a/drivers/gpio/gpiolib-acpi.c b/drivers/gpio/gpiolib-acpi.c
index bb583cea366c..3871dade186a 100644
--- a/drivers/gpio/gpiolib-acpi.c
+++ b/drivers/gpio/gpiolib-acpi.c
@@ -7,17 +7,19 @@
  *          Mika Westerberg <mika.westerberg@...ux.intel.com>
  */
 
+#include <linux/acpi.h>
 #include <linux/dmi.h>
 #include <linux/errno.h>
-#include <linux/gpio/consumer.h>
-#include <linux/gpio/driver.h>
-#include <linux/gpio/machine.h>
 #include <linux/export.h>
-#include <linux/acpi.h>
 #include <linux/interrupt.h>
+#include <linux/irq.h>
 #include <linux/mutex.h>
 #include <linux/pinctrl/pinctrl.h>
 
+#include <linux/gpio/consumer.h>
+#include <linux/gpio/driver.h>
+#include <linux/gpio/machine.h>
+
 #include "gpiolib.h"
 #include "gpiolib-acpi.h"
 
diff --git a/drivers/gpio/gpiolib-acpi.h b/drivers/gpio/gpiolib-acpi.h
index 5fa315b3c912..a6f3be0bb921 100644
--- a/drivers/gpio/gpiolib-acpi.h
+++ b/drivers/gpio/gpiolib-acpi.h
@@ -9,7 +9,6 @@
 #define GPIOLIB_ACPI_H
 
 #include <linux/err.h>
-#include <linux/errno.h>
 #include <linux/types.h>
 
 #include <linux/gpio/consumer.h>
diff --git a/drivers/gpio/gpiolib-of.c b/drivers/gpio/gpiolib-of.c
index 0f699af438b0..1436cdb5fa26 100644
--- a/drivers/gpio/gpiolib-of.c
+++ b/drivers/gpio/gpiolib-of.c
@@ -10,14 +10,16 @@
 #include <linux/device.h>
 #include <linux/err.h>
 #include <linux/errno.h>
-#include <linux/module.h>
 #include <linux/io.h>
-#include <linux/gpio/consumer.h>
+#include <linux/module.h>
 #include <linux/of.h>
 #include <linux/of_address.h>
 #include <linux/of_gpio.h>
 #include <linux/pinctrl/pinctrl.h>
 #include <linux/slab.h>
+#include <linux/string.h>
+
+#include <linux/gpio/consumer.h>
 #include <linux/gpio/machine.h>
 
 #include "gpiolib.h"
diff --git a/drivers/gpio/gpiolib-of.h b/drivers/gpio/gpiolib-of.h
index e5bb065d82ef..6b3a5347c5d9 100644
--- a/drivers/gpio/gpiolib-of.h
+++ b/drivers/gpio/gpiolib-of.h
@@ -4,7 +4,6 @@
 #define GPIOLIB_OF_H
 
 #include <linux/err.h>
-#include <linux/errno.h>
 #include <linux/types.h>
 
 #include <linux/notifier.h>
diff --git a/drivers/gpio/gpiolib-swnode.c b/drivers/gpio/gpiolib-swnode.c
index dd9ccac214d1..b5a6eaf3729b 100644
--- a/drivers/gpio/gpiolib-swnode.c
+++ b/drivers/gpio/gpiolib-swnode.c
@@ -6,13 +6,14 @@
  */
 #include <linux/err.h>
 #include <linux/errno.h>
-#include <linux/gpio/consumer.h>
-#include <linux/gpio/driver.h>
 #include <linux/kernel.h>
 #include <linux/printk.h>
 #include <linux/property.h>
 #include <linux/string.h>
 
+#include <linux/gpio/consumer.h>
+#include <linux/gpio/driver.h>
+
 #include "gpiolib.h"
 #include "gpiolib-swnode.h"
 
diff --git a/drivers/gpio/gpiolib-sysfs.c b/drivers/gpio/gpiolib-sysfs.c
index 6e4267944f80..c1cbf71329f0 100644
--- a/drivers/gpio/gpiolib-sysfs.c
+++ b/drivers/gpio/gpiolib-sysfs.c
@@ -1,18 +1,29 @@
 // SPDX-License-Identifier: GPL-2.0
+
+#include <linux/bitops.h>
+#include <linux/device.h>
 #include <linux/idr.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/kdev_t.h>
+#include <linux/kstrtox.h>
+#include <linux/list.h>
 #include <linux/mutex.h>
-#include <linux/device.h>
+#include <linux/printk.h>
+#include <linux/slab.h>
+#include <linux/spinlock.h>
+#include <linux/string.h>
 #include <linux/sysfs.h>
+#include <linux/types.h>
+
 #include <linux/gpio/consumer.h>
 #include <linux/gpio/driver.h>
-#include <linux/interrupt.h>
-#include <linux/kdev_t.h>
-#include <linux/slab.h>
-#include <linux/ctype.h>
 
 #include "gpiolib.h"
 #include "gpiolib-sysfs.h"
 
+struct kernfs_node;
+
 #define GPIO_IRQF_TRIGGER_NONE		0
 #define GPIO_IRQF_TRIGGER_FALLING	BIT(0)
 #define GPIO_IRQF_TRIGGER_RISING	BIT(1)
diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c
index 99a2c77c3711..900f6573c070 100644
--- a/drivers/gpio/gpiolib.c
+++ b/drivers/gpio/gpiolib.c
@@ -6,22 +6,25 @@
 #include <linux/debugfs.h>
 #include <linux/device.h>
 #include <linux/err.h>
+#include <linux/errno.h>
 #include <linux/file.h>
 #include <linux/fs.h>
-#include <linux/gpio.h>
-#include <linux/gpio/driver.h>
-#include <linux/gpio/machine.h>
 #include <linux/idr.h>
 #include <linux/interrupt.h>
 #include <linux/irq.h>
 #include <linux/kernel.h>
 #include <linux/list.h>
 #include <linux/module.h>
+#include <linux/of.h>
 #include <linux/pinctrl/consumer.h>
 #include <linux/seq_file.h>
 #include <linux/slab.h>
 #include <linux/spinlock.h>
 
+#include <linux/gpio.h>
+#include <linux/gpio/driver.h>
+#include <linux/gpio/machine.h>
+
 #include <uapi/linux/gpio.h>
 
 #include "gpiolib-acpi.h"
diff --git a/include/linux/gpio.h b/include/linux/gpio.h
index 84bb49939d6e..574c45be924b 100644
--- a/include/linux/gpio.h
+++ b/include/linux/gpio.h
@@ -12,7 +12,7 @@
 #ifndef __LINUX_GPIO_H
 #define __LINUX_GPIO_H
 
-#include <linux/errno.h>
+struct device;
 
 /* see Documentation/driver-api/gpio/legacy.rst */
 
@@ -132,20 +132,17 @@ void gpio_free_array(const struct gpio *array, size_t num);
 
 /* CONFIG_GPIOLIB: bindings for managed devices that want to request gpios */
 
-struct device;
-
 int devm_gpio_request(struct device *dev, unsigned gpio, const char *label);
 int devm_gpio_request_one(struct device *dev, unsigned gpio,
 			  unsigned long flags, const char *label);
 
 #else /* ! CONFIG_GPIOLIB */
 
-#include <linux/bug.h>
 #include <linux/kernel.h>
 #include <linux/types.h>
 
-struct device;
-struct gpio_chip;
+#include <asm/bug.h>
+#include <asm/errno.h>
 
 static inline bool gpio_is_valid(int number)
 {
diff --git a/include/linux/gpio/consumer.h b/include/linux/gpio/consumer.h
index 5432e5d5fbfb..1c4385a00f88 100644
--- a/include/linux/gpio/consumer.h
+++ b/include/linux/gpio/consumer.h
@@ -3,15 +3,14 @@
 #define __LINUX_GPIO_CONSUMER_H
 
 #include <linux/bits.h>
-#include <linux/bug.h>
-#include <linux/compiler_types.h>
-#include <linux/err.h>
+#include <linux/types.h>
 
 struct acpi_device;
 struct device;
 struct fwnode_handle;
-struct gpio_desc;
+
 struct gpio_array;
+struct gpio_desc;
 
 /**
  * struct gpio_descs - Struct containing an array of descriptors that can be
@@ -185,8 +184,11 @@ struct gpio_desc *devm_fwnode_gpiod_get_index(struct device *dev,
 
 #else /* CONFIG_GPIOLIB */
 
+#include <linux/err.h>
 #include <linux/kernel.h>
 
+#include <asm/bug.h>
+
 static inline int gpiod_count(struct device *dev, const char *con_id)
 {
 	return 0;
@@ -616,6 +618,8 @@ struct gpio_desc *acpi_get_and_request_gpiod(char *path, unsigned int pin, char
 
 #else  /* CONFIG_GPIOLIB && CONFIG_ACPI */
 
+#include <linux/err.h>
+
 static inline int acpi_dev_add_driver_gpios(struct acpi_device *adev,
 			      const struct acpi_gpio_mapping *gpios)
 {
@@ -647,6 +651,8 @@ void gpiod_unexport(struct gpio_desc *desc);
 
 #else  /* CONFIG_GPIOLIB && CONFIG_GPIO_SYSFS */
 
+#include <asm/errno.h>
+
 static inline int gpiod_export(struct gpio_desc *desc,
 			       bool direction_may_change)
 {
diff --git a/include/linux/gpio/driver.h b/include/linux/gpio/driver.h
index 262a84ce9bcb..5c6db5533be6 100644
--- a/include/linux/gpio/driver.h
+++ b/include/linux/gpio/driver.h
@@ -2,27 +2,35 @@
 #ifndef __LINUX_GPIO_DRIVER_H
 #define __LINUX_GPIO_DRIVER_H
 
-#include <linux/device.h>
-#include <linux/irq.h>
+#include <linux/bits.h>
 #include <linux/irqchip/chained_irq.h>
 #include <linux/irqdomain.h>
+#include <linux/irqhandler.h>
 #include <linux/lockdep.h>
 #include <linux/pinctrl/pinconf-generic.h>
 #include <linux/pinctrl/pinctrl.h>
 #include <linux/property.h>
+#include <linux/spinlock_types.h>
 #include <linux/types.h>
 
+#ifdef CONFIG_GENERIC_MSI_IRQ
 #include <asm/msi.h>
+#endif
 
-struct gpio_desc;
+struct device;
+struct irq_chip;
+struct irq_data;
+struct module;
 struct of_phandle_args;
+struct pinctrl_dev;
 struct seq_file;
-struct gpio_device;
-struct module;
-enum gpiod_flags;
-enum gpio_lookup_flags;
 
 struct gpio_chip;
+struct gpio_desc;
+struct gpio_device;
+
+enum gpio_lookup_flags;
+enum gpiod_flags;
 
 union gpio_irq_fwspec {
 	struct irq_fwspec	fwspec;
@@ -679,6 +687,10 @@ bool gpiochip_irqchip_irq_valid(const struct gpio_chip *gc,
 int gpiochip_irqchip_add_domain(struct gpio_chip *gc,
 				struct irq_domain *domain);
 #else
+
+#include <asm/bug.h>
+#include <asm/errno.h>
+
 static inline int gpiochip_irqchip_add_domain(struct gpio_chip *gc,
 					      struct irq_domain *domain)
 {
@@ -756,6 +768,10 @@ struct gpio_chip *gpiod_to_chip(const struct gpio_desc *desc);
 
 #else /* CONFIG_GPIOLIB */
 
+#include <linux/err.h>
+
+#include <asm/bug.h>
+
 static inline struct gpio_chip *gpiod_to_chip(const struct gpio_desc *desc)
 {
 	/* GPIO can never have been requested */
-- 
2.39.1

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