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gpio: sysfs: rename gpiochip registration functions

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Rename the gpio-chip export/unexport functions to the more descriptive
names gpiochip_sysfs_register and gpiochip_sysfs_unregister.

Signed-off-by: Johan Hovold <johan@kernel.org>
Reviewed-by: Alexandre Courbot <acourbot@nvidia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Johan Hovold 2015-05-04 17:10:32 +02:00 committed by Linus Walleij
parent 6a4b6b0a3b
commit 426577bd88
3 changed files with 15 additions and 13 deletions
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16
drivers/gpio/gpiolib-sysfs.c
View File

@ -765,13 +765,14 @@ void gpiod_unexport(struct gpio_desc *desc)
}
EXPORT_SYMBOL_GPL(gpiod_unexport);
int gpiochip_export(struct gpio_chip *chip)
int gpiochip_sysfs_register(struct gpio_chip *chip)
{
struct device *dev;
/* Many systems register gpio chips for SOC support very early,
/*
* Many systems add gpio chips for SOC support very early,
* before driver model support is available. In those cases we
* export this later, in gpiolib_sysfs_init() ... here we just
* register later, in gpiolib_sysfs_init() ... here we just
* verify that _some_ field of gpio_class got initialized.
*/
if (!gpio_class.p)
@ -791,7 +792,7 @@ int gpiochip_export(struct gpio_chip *chip)
return 0;
}
void gpiochip_unexport(struct gpio_chip *chip)
void gpiochip_sysfs_unregister(struct gpio_chip *chip)
{
struct gpio_desc *desc;
unsigned int i;
@ -836,15 +837,16 @@ static int __init gpiolib_sysfs_init(void)
continue;
/*
* TODO we yield gpio_lock here because gpiochip_export()
* acquires a mutex. This is unsafe and needs to be fixed.
* TODO we yield gpio_lock here because
* gpiochip_sysfs_register() acquires a mutex. This is unsafe
* and needs to be fixed.
*
* Also it would be nice to use gpiochip_find() here so we
* can keep gpio_chips local to gpiolib.c, but the yield of
* gpio_lock prevents us from doing this.
*/
spin_unlock_irqrestore(&gpio_lock, flags);
status = gpiochip_export(chip);
status = gpiochip_sysfs_register(chip);
spin_lock_irqsave(&gpio_lock, flags);
}
spin_unlock_irqrestore(&gpio_lock, flags);

4
drivers/gpio/gpiolib.c
View File

@ -285,7 +285,7 @@ int gpiochip_add(struct gpio_chip *chip)
of_gpiochip_add(chip);
acpi_gpiochip_add(chip);
status = gpiochip_export(chip);
status = gpiochip_sysfs_register(chip);
if (status)
goto err_remove_chip;
@ -330,7 +330,7 @@ void gpiochip_remove(struct gpio_chip *chip)
unsigned id;
bool requested = false;
gpiochip_unexport(chip);
gpiochip_sysfs_unregister(chip);
gpiochip_irqchip_remove(chip);

8
drivers/gpio/gpiolib.h
View File

@ -151,17 +151,17 @@ static int __maybe_unused gpio_chip_hwgpio(const struct gpio_desc *desc)
#ifdef CONFIG_GPIO_SYSFS
int gpiochip_export(struct gpio_chip *chip);
void gpiochip_unexport(struct gpio_chip *chip);
int gpiochip_sysfs_register(struct gpio_chip *chip);
void gpiochip_sysfs_unregister(struct gpio_chip *chip);
#else
static inline int gpiochip_export(struct gpio_chip *chip)
static inline int gpiochip_sysfs_register(struct gpio_chip *chip)
{
return 0;
}
static inline void gpiochip_unexport(struct gpio_chip *chip)
static inline void gpiochip_sysfs_unregister(struct gpio_chip *chip)
{
}