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gpio: constify opaque pointer in gpio_device_find() match function

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The match function used in gpio_device_find() should not modify the
contents of passed opaque pointer, because such modification would not
be necessary for actual matching and it could lead to quite unreadable,
spaghetti code.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
[Bartosz: fix coding style in header]
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
This commit is contained in:
Krzysztof Kozlowski
2024-02-08 21:27:04 +01:00
committed by Bartosz Golaszewski
parent 104e00bbc7
commit faf6efd2e5
4 changed files with 10 additions and 8 deletions
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3
include/linux/gpio/driver.h
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@@ -629,7 +629,8 @@ int devm_gpiochip_add_data_with_key(struct device *dev, struct gpio_chip *gc,
struct lock_class_key *request_key);
struct gpio_device *gpio_device_find(void *data,
int (*match)(struct gpio_chip *gc, void *data));
int (*match)(struct gpio_chip *gc,
const void *data));
struct gpio_device *gpio_device_find_by_label(const char *label);
struct gpio_device *gpio_device_find_by_fwnode(const struct fwnode_handle *fwnode);