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gpio: move sysfs mock device to the gpio_device

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Since gpio_device is the struct that survives if the backing
gpio_chip is removed, move the sysfs mock device to this state
container so it becomes part of the dangling state of the
GPIO device on removal.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Linus Walleij
2016-02-09 13:21:06 +01:00
parent 9efd9e6956
commit afbc4f312b
4 changed files with 21 additions and 19 deletions
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11
drivers/gpio/gpiolib.h
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@@ -27,6 +27,8 @@ struct acpi_device;
* @id: numerical ID number for the GPIO chip
* @dev: the GPIO device struct
* @chrdev: character device for the GPIO device
* @mockdev: class device used by the deprecated sysfs interface (may be
* NULL)
* @owner: helps prevent removal of modules exporting active GPIOs
* @chip: pointer to the corresponding gpiochip, holding static
* data for this device
@@ -41,6 +43,7 @@ struct gpio_device {
int id;
struct device dev;
struct cdev chrdev;
struct device *mockdev;
struct module *owner;
struct gpio_chip *chip;
struct list_head list;
@@ -190,17 +193,17 @@ static int __maybe_unused gpio_chip_hwgpio(const struct gpio_desc *desc)
#ifdef CONFIG_GPIO_SYSFS
int gpiochip_sysfs_register(struct gpio_chip *chip);
void gpiochip_sysfs_unregister(struct gpio_chip *chip);
int gpiochip_sysfs_register(struct gpio_device *gdev);
void gpiochip_sysfs_unregister(struct gpio_device *gdev);
#else
static inline int gpiochip_sysfs_register(struct gpio_chip *chip)
static inline int gpiochip_sysfs_register(struct gpio_device *gdev)
{
return 0;
}
static inline void gpiochip_sysfs_unregister(struct gpio_chip *chip)
static inline void gpiochip_sysfs_unregister(struct gpio_device *gdev)
{
}