[05/23] gpiolib: unexport devprop_gpiochip_set_names()

Message ID 20200904154547.3836-6-brgl@bgdev.pl
State New
Headers show
Series
  • gpio: mockup: support dynamically created and removed chips
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Commit Message

Bartosz Golaszewski Sept. 4, 2020, 3:45 p.m.
From: Bartosz Golaszewski <bgolaszewski@baylibre.com>

Now that devprop_gpiochip_set_names() is only used in a single place
inside drivers/gpio/gpiolib.c, there's no need anymore for it to be
exported or to even live in its own source file. Pull this function into
the core source file for gpiolib.

Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
---
 drivers/gpio/Makefile          |  1 -
 drivers/gpio/gpiolib-devprop.c | 64 ----------------------------------
 drivers/gpio/gpiolib.c         | 48 +++++++++++++++++++++++++
 include/linux/gpio/driver.h    |  2 --
 4 files changed, 48 insertions(+), 67 deletions(-)
 delete mode 100644 drivers/gpio/gpiolib-devprop.c

Comments

Andy Shevchenko Sept. 4, 2020, 4:40 p.m. | #1
On Fri, Sep 04, 2020 at 05:45:29PM +0200, Bartosz Golaszewski wrote:
> From: Bartosz Golaszewski <bgolaszewski@baylibre.com>
> 
> Now that devprop_gpiochip_set_names() is only used in a single place
> inside drivers/gpio/gpiolib.c, there's no need anymore for it to be
> exported or to even live in its own source file. Pull this function into
> the core source file for gpiolib.

I have mixed feelings about this. We may simply unexport and attach object file
to gpiolib.o. Would it be expected to see more functions in this file in the
future?

> Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
> ---
>  drivers/gpio/Makefile          |  1 -
>  drivers/gpio/gpiolib-devprop.c | 64 ----------------------------------
>  drivers/gpio/gpiolib.c         | 48 +++++++++++++++++++++++++
>  include/linux/gpio/driver.h    |  2 --
>  4 files changed, 48 insertions(+), 67 deletions(-)
>  delete mode 100644 drivers/gpio/gpiolib-devprop.c
> 
> diff --git a/drivers/gpio/Makefile b/drivers/gpio/Makefile
> index 4f9abff4f2dc..639275eb4e4d 100644
> --- a/drivers/gpio/Makefile
> +++ b/drivers/gpio/Makefile
> @@ -6,7 +6,6 @@ ccflags-$(CONFIG_DEBUG_GPIO)	+= -DDEBUG
>  obj-$(CONFIG_GPIOLIB)		+= gpiolib.o
>  obj-$(CONFIG_GPIOLIB)		+= gpiolib-devres.o
>  obj-$(CONFIG_GPIOLIB)		+= gpiolib-legacy.o
> -obj-$(CONFIG_GPIOLIB)		+= gpiolib-devprop.o
>  obj-$(CONFIG_GPIOLIB)		+= gpiolib-cdev.o
>  obj-$(CONFIG_OF_GPIO)		+= gpiolib-of.o
>  obj-$(CONFIG_GPIO_SYSFS)	+= gpiolib-sysfs.o
> diff --git a/drivers/gpio/gpiolib-devprop.c b/drivers/gpio/gpiolib-devprop.c
> deleted file mode 100644
> index a28659b4f9c9..000000000000
> --- a/drivers/gpio/gpiolib-devprop.c
> +++ /dev/null
> @@ -1,64 +0,0 @@
> -// SPDX-License-Identifier: GPL-2.0
> -/*
> - * Device property helpers for GPIO chips.
> - *
> - * Copyright (C) 2016, Intel Corporation
> - * Author: Mika Westerberg <mika.westerberg@linux.intel.com>
> - */
> -
> -#include <linux/property.h>
> -#include <linux/slab.h>
> -#include <linux/gpio/consumer.h>
> -#include <linux/gpio/driver.h>
> -#include <linux/export.h>
> -
> -#include "gpiolib.h"
> -
> -/**
> - * devprop_gpiochip_set_names - Set GPIO line names using device properties
> - * @chip: GPIO chip whose lines should be named, if possible
> - *
> - * Looks for device property "gpio-line-names" and if it exists assigns
> - * GPIO line names for the chip. The memory allocated for the assigned
> - * names belong to the underlying software node and should not be released
> - * by the caller.
> - */
> -int devprop_gpiochip_set_names(struct gpio_chip *chip)
> -{
> -	struct gpio_device *gdev = chip->gpiodev;
> -	struct device *dev = chip->parent;
> -	const char **names;
> -	int ret, i;
> -	int count;
> -
> -	count = device_property_read_string_array(dev, "gpio-line-names",
> -						  NULL, 0);
> -	if (count < 0)
> -		return 0;
> -
> -	if (count > gdev->ngpio) {
> -		dev_warn(&gdev->dev, "gpio-line-names is length %d but should be at most length %d",
> -			 count, gdev->ngpio);
> -		count = gdev->ngpio;
> -	}
> -
> -	names = kcalloc(count, sizeof(*names), GFP_KERNEL);
> -	if (!names)
> -		return -ENOMEM;
> -
> -	ret = device_property_read_string_array(dev, "gpio-line-names",
> -						names, count);
> -	if (ret < 0) {
> -		dev_warn(&gdev->dev, "failed to read GPIO line names\n");
> -		kfree(names);
> -		return ret;
> -	}
> -
> -	for (i = 0; i < count; i++)
> -		gdev->descs[i].name = names[i];
> -
> -	kfree(names);
> -
> -	return 0;
> -}
> -EXPORT_SYMBOL_GPL(devprop_gpiochip_set_names);
> diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c
> index 0d390f0ec32c..15c99cf560ee 100644
> --- a/drivers/gpio/gpiolib.c
> +++ b/drivers/gpio/gpiolib.c
> @@ -358,6 +358,54 @@ static int gpiochip_set_desc_names(struct gpio_chip *gc)
>  	return 0;
>  }
>  
> +/*
> + * devprop_gpiochip_set_names - Set GPIO line names using device properties
> + * @chip: GPIO chip whose lines should be named, if possible
> + *
> + * Looks for device property "gpio-line-names" and if it exists assigns
> + * GPIO line names for the chip. The memory allocated for the assigned
> + * names belong to the underlying software node and should not be released
> + * by the caller.
> + */
> +static int devprop_gpiochip_set_names(struct gpio_chip *chip)
> +{
> +	struct gpio_device *gdev = chip->gpiodev;
> +	struct device *dev = chip->parent;
> +	const char **names;
> +	int ret, i;
> +	int count;
> +
> +	count = device_property_read_string_array(dev, "gpio-line-names",
> +						  NULL, 0);
> +	if (count < 0)
> +		return 0;
> +
> +	if (count > gdev->ngpio) {
> +		dev_warn(&gdev->dev, "gpio-line-names is length %d but should be at most length %d",
> +			 count, gdev->ngpio);
> +		count = gdev->ngpio;
> +	}
> +
> +	names = kcalloc(count, sizeof(*names), GFP_KERNEL);
> +	if (!names)
> +		return -ENOMEM;
> +
> +	ret = device_property_read_string_array(dev, "gpio-line-names",
> +						names, count);
> +	if (ret < 0) {
> +		dev_warn(&gdev->dev, "failed to read GPIO line names\n");
> +		kfree(names);
> +		return ret;
> +	}
> +
> +	for (i = 0; i < count; i++)
> +		gdev->descs[i].name = names[i];
> +
> +	kfree(names);
> +
> +	return 0;
> +}
> +
>  static unsigned long *gpiochip_allocate_mask(struct gpio_chip *gc)
>  {
>  	unsigned long *p;
> diff --git a/include/linux/gpio/driver.h b/include/linux/gpio/driver.h
> index 56485a040b82..4a7e295c3640 100644
> --- a/include/linux/gpio/driver.h
> +++ b/include/linux/gpio/driver.h
> @@ -756,8 +756,6 @@ struct gpio_desc *gpiochip_request_own_desc(struct gpio_chip *gc,
>  					    enum gpiod_flags dflags);
>  void gpiochip_free_own_desc(struct gpio_desc *desc);
>  
> -int devprop_gpiochip_set_names(struct gpio_chip *gc);
> -
>  #ifdef CONFIG_GPIOLIB
>  
>  /* lock/unlock as IRQ */
> -- 
> 2.26.1
>

Patch

diff --git a/drivers/gpio/Makefile b/drivers/gpio/Makefile
index 4f9abff4f2dc..639275eb4e4d 100644
--- a/drivers/gpio/Makefile
+++ b/drivers/gpio/Makefile
@@ -6,7 +6,6 @@  ccflags-$(CONFIG_DEBUG_GPIO)	+= -DDEBUG
 obj-$(CONFIG_GPIOLIB)		+= gpiolib.o
 obj-$(CONFIG_GPIOLIB)		+= gpiolib-devres.o
 obj-$(CONFIG_GPIOLIB)		+= gpiolib-legacy.o
-obj-$(CONFIG_GPIOLIB)		+= gpiolib-devprop.o
 obj-$(CONFIG_GPIOLIB)		+= gpiolib-cdev.o
 obj-$(CONFIG_OF_GPIO)		+= gpiolib-of.o
 obj-$(CONFIG_GPIO_SYSFS)	+= gpiolib-sysfs.o
diff --git a/drivers/gpio/gpiolib-devprop.c b/drivers/gpio/gpiolib-devprop.c
deleted file mode 100644
index a28659b4f9c9..000000000000
--- a/drivers/gpio/gpiolib-devprop.c
+++ /dev/null
@@ -1,64 +0,0 @@ 
-// SPDX-License-Identifier: GPL-2.0
-/*
- * Device property helpers for GPIO chips.
- *
- * Copyright (C) 2016, Intel Corporation
- * Author: Mika Westerberg <mika.westerberg@linux.intel.com>
- */
-
-#include <linux/property.h>
-#include <linux/slab.h>
-#include <linux/gpio/consumer.h>
-#include <linux/gpio/driver.h>
-#include <linux/export.h>
-
-#include "gpiolib.h"
-
-/**
- * devprop_gpiochip_set_names - Set GPIO line names using device properties
- * @chip: GPIO chip whose lines should be named, if possible
- *
- * Looks for device property "gpio-line-names" and if it exists assigns
- * GPIO line names for the chip. The memory allocated for the assigned
- * names belong to the underlying software node and should not be released
- * by the caller.
- */
-int devprop_gpiochip_set_names(struct gpio_chip *chip)
-{
-	struct gpio_device *gdev = chip->gpiodev;
-	struct device *dev = chip->parent;
-	const char **names;
-	int ret, i;
-	int count;
-
-	count = device_property_read_string_array(dev, "gpio-line-names",
-						  NULL, 0);
-	if (count < 0)
-		return 0;
-
-	if (count > gdev->ngpio) {
-		dev_warn(&gdev->dev, "gpio-line-names is length %d but should be at most length %d",
-			 count, gdev->ngpio);
-		count = gdev->ngpio;
-	}
-
-	names = kcalloc(count, sizeof(*names), GFP_KERNEL);
-	if (!names)
-		return -ENOMEM;
-
-	ret = device_property_read_string_array(dev, "gpio-line-names",
-						names, count);
-	if (ret < 0) {
-		dev_warn(&gdev->dev, "failed to read GPIO line names\n");
-		kfree(names);
-		return ret;
-	}
-
-	for (i = 0; i < count; i++)
-		gdev->descs[i].name = names[i];
-
-	kfree(names);
-
-	return 0;
-}
-EXPORT_SYMBOL_GPL(devprop_gpiochip_set_names);
diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c
index 0d390f0ec32c..15c99cf560ee 100644
--- a/drivers/gpio/gpiolib.c
+++ b/drivers/gpio/gpiolib.c
@@ -358,6 +358,54 @@  static int gpiochip_set_desc_names(struct gpio_chip *gc)
 	return 0;
 }
 
+/*
+ * devprop_gpiochip_set_names - Set GPIO line names using device properties
+ * @chip: GPIO chip whose lines should be named, if possible
+ *
+ * Looks for device property "gpio-line-names" and if it exists assigns
+ * GPIO line names for the chip. The memory allocated for the assigned
+ * names belong to the underlying software node and should not be released
+ * by the caller.
+ */
+static int devprop_gpiochip_set_names(struct gpio_chip *chip)
+{
+	struct gpio_device *gdev = chip->gpiodev;
+	struct device *dev = chip->parent;
+	const char **names;
+	int ret, i;
+	int count;
+
+	count = device_property_read_string_array(dev, "gpio-line-names",
+						  NULL, 0);
+	if (count < 0)
+		return 0;
+
+	if (count > gdev->ngpio) {
+		dev_warn(&gdev->dev, "gpio-line-names is length %d but should be at most length %d",
+			 count, gdev->ngpio);
+		count = gdev->ngpio;
+	}
+
+	names = kcalloc(count, sizeof(*names), GFP_KERNEL);
+	if (!names)
+		return -ENOMEM;
+
+	ret = device_property_read_string_array(dev, "gpio-line-names",
+						names, count);
+	if (ret < 0) {
+		dev_warn(&gdev->dev, "failed to read GPIO line names\n");
+		kfree(names);
+		return ret;
+	}
+
+	for (i = 0; i < count; i++)
+		gdev->descs[i].name = names[i];
+
+	kfree(names);
+
+	return 0;
+}
+
 static unsigned long *gpiochip_allocate_mask(struct gpio_chip *gc)
 {
 	unsigned long *p;
diff --git a/include/linux/gpio/driver.h b/include/linux/gpio/driver.h
index 56485a040b82..4a7e295c3640 100644
--- a/include/linux/gpio/driver.h
+++ b/include/linux/gpio/driver.h
@@ -756,8 +756,6 @@  struct gpio_desc *gpiochip_request_own_desc(struct gpio_chip *gc,
 					    enum gpiod_flags dflags);
 void gpiochip_free_own_desc(struct gpio_desc *desc);
 
-int devprop_gpiochip_set_names(struct gpio_chip *gc);
-
 #ifdef CONFIG_GPIOLIB
 
 /* lock/unlock as IRQ */