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gpiolib: Add GPIOCHIP_NAME definition

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The string literal "gpiochip" is used in several places.
Add a definition for it, and use it everywhere, to make sure everything
stays in sync.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20191127084253.16356-2-geert+renesas@glider.be
Reviewed-by: Ulrich Hecht <uli+renesas@fpond.eu>
Reviewed-by: Eugeniu Rosca <erosca@de.adit-jv.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Geert Uytterhoeven 2019-11-27 09:42:47 +01:00 committed by Linus Walleij
parent e42617b825
commit ddd8891e01
3 changed files with 7 additions and 6 deletions
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7
drivers/gpio/gpiolib-sysfs.c
View File

@ -762,10 +762,9 @@ int gpiochip_sysfs_register(struct gpio_device *gdev)
parent = &gdev->dev;
/* use chip->base for the ID; it's already known to be unique */
dev = device_create_with_groups(&gpio_class, parent,
MKDEV(0, 0),
chip, gpiochip_groups,
"gpiochip%d", chip->base);
dev = device_create_with_groups(&gpio_class, parent, MKDEV(0, 0), chip,
gpiochip_groups, GPIOCHIP_NAME "%d",
chip->base);
if (IS_ERR(dev))
return PTR_ERR(dev);

4
drivers/gpio/gpiolib.c
View File

@ -1419,7 +1419,7 @@ int gpiochip_add_data_with_key(struct gpio_chip *chip, void *data,
ret = gdev->id;
goto err_free_gdev;
}
dev_set_name(&gdev->dev, "gpiochip%d", gdev->id);
dev_set_name(&gdev->dev, GPIOCHIP_NAME "%d", gdev->id);
device_initialize(&gdev->dev);
dev_set_drvdata(&gdev->dev, gdev);
if (chip->parent && chip->parent->driver)
@ -5104,7 +5104,7 @@ static int __init gpiolib_dev_init(void)
return ret;
}
ret = alloc_chrdev_region(&gpio_devt, 0, GPIO_DEV_MAX, "gpiochip");
ret = alloc_chrdev_region(&gpio_devt, 0, GPIO_DEV_MAX, GPIOCHIP_NAME);
if (ret < 0) {
pr_err("gpiolib: failed to allocate char dev region\n");
bus_unregister(&gpio_bus_type);

2
drivers/gpio/gpiolib.h
View File

@ -16,6 +16,8 @@
#include <linux/module.h>
#include <linux/cdev.h>
#define GPIOCHIP_NAME "gpiochip"
/**
* struct gpio_device - internal state container for GPIO devices
* @id: numerical ID number for the GPIO chip