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Subject[PATCH] gpiolib: devres: shrink devm_gpiochip_add_data_with_key()
Date
From: Bartosz Golaszewski <bgolaszewski@baylibre.com>

If all we want to manage is a single pointer, there's no need to
manually allocate and add a new devres. We can simply use
devm_add_action_or_reset() and shrink the code by a good bit.

Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
---
drivers/gpio/gpiolib-devres.c | 19 ++++---------------
1 file changed, 4 insertions(+), 15 deletions(-)

diff --git a/drivers/gpio/gpiolib-devres.c b/drivers/gpio/gpiolib-devres.c
index 7dbce4c4ebdf..0a292dd3e2a6 100644
--- a/drivers/gpio/gpiolib-devres.c
+++ b/drivers/gpio/gpiolib-devres.c
@@ -479,9 +479,9 @@ void devm_gpio_free(struct device *dev, unsigned int gpio)
}
EXPORT_SYMBOL_GPL(devm_gpio_free);

-static void devm_gpio_chip_release(struct device *dev, void *res)
+static void devm_gpio_chip_release(void *data)
{
- struct gpio_chip *gc = *(struct gpio_chip **)res;
+ struct gpio_chip *gc = data;

gpiochip_remove(gc);
}
@@ -507,23 +507,12 @@ int devm_gpiochip_add_data_with_key(struct device *dev, struct gpio_chip *gc, vo
struct lock_class_key *lock_key,
struct lock_class_key *request_key)
{
- struct gpio_chip **ptr;
int ret;

- ptr = devres_alloc(devm_gpio_chip_release, sizeof(*ptr),
- GFP_KERNEL);
- if (!ptr)
- return -ENOMEM;
-
ret = gpiochip_add_data_with_key(gc, data, lock_key, request_key);
- if (ret < 0) {
- devres_free(ptr);
+ if (ret < 0)
return ret;
- }

- *ptr = gc;
- devres_add(dev, ptr);
-
- return 0;
+ return devm_add_action_or_reset(dev, devm_gpio_chip_release, gc);
}
EXPORT_SYMBOL_GPL(devm_gpiochip_add_data_with_key);
--
2.29.1
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