diff options
| author | Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> | 2024-02-08 21:27:04 +0100 |
|---|---|---|
| committer | Bartosz Golaszewski <bartosz.golaszewski@linaro.org> | 2024-02-12 10:18:31 +0100 |
| commit | faf6efd2e5e23d3319501132d9671c8606ef21bd (patch) | |
| tree | 8b698b9a557ea0eafb984ee1dc6337c24f62702e /drivers/gpio | |
| parent | 104e00bbc76fc2a0fe887649d01d9c15f0e08021 (diff) | |
gpio: constify opaque pointer in gpio_device_find() match function
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>
Diffstat (limited to 'drivers/gpio')
| -rw-r--r-- | drivers/gpio/gpiolib-acpi.c | 2 | ||||
| -rw-r--r-- | drivers/gpio/gpiolib-of.c | 7 | ||||
| -rw-r--r-- | drivers/gpio/gpiolib.c | 6 |
3 files changed, 8 insertions, 7 deletions
diff --git a/drivers/gpio/gpiolib-acpi.c b/drivers/gpio/gpiolib-acpi.c index cd3e9657cc36..899cd505073e 100644 --- a/drivers/gpio/gpiolib-acpi.c +++ b/drivers/gpio/gpiolib-acpi.c @@ -126,7 +126,7 @@ static DEFINE_MUTEX(acpi_gpio_deferred_req_irqs_lock); static LIST_HEAD(acpi_gpio_deferred_req_irqs_list); static bool acpi_gpio_deferred_req_irqs_done; -static int acpi_gpiochip_find(struct gpio_chip *gc, void *data) +static int acpi_gpiochip_find(struct gpio_chip *gc, const void *data) { return device_match_acpi_handle(&gc->gpiodev->dev, data); } diff --git a/drivers/gpio/gpiolib-of.c b/drivers/gpio/gpiolib-of.c index 77509aa19900..35d717fd393f 100644 --- a/drivers/gpio/gpiolib-of.c +++ b/drivers/gpio/gpiolib-of.c @@ -118,9 +118,10 @@ int of_gpio_get_count(struct device *dev, const char *con_id) return ret ? ret : -ENOENT; } -static int of_gpiochip_match_node_and_xlate(struct gpio_chip *chip, void *data) +static int of_gpiochip_match_node_and_xlate(struct gpio_chip *chip, + const void *data) { - struct of_phandle_args *gpiospec = data; + const struct of_phandle_args *gpiospec = data; return device_match_of_node(&chip->gpiodev->dev, gpiospec->np) && chip->of_xlate && @@ -852,7 +853,7 @@ static void of_gpiochip_remove_hog(struct gpio_chip *chip, gpiochip_free_own_desc(desc); } -static int of_gpiochip_match_node(struct gpio_chip *chip, void *data) +static int of_gpiochip_match_node(struct gpio_chip *chip, const void *data) { return device_match_of_node(&chip->gpiodev->dev, data); } diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c index d068788adb10..288aed5a9f6b 100644 --- a/drivers/gpio/gpiolib.c +++ b/drivers/gpio/gpiolib.c @@ -1119,7 +1119,7 @@ EXPORT_SYMBOL_GPL(gpiochip_remove); */ struct gpio_device *gpio_device_find(void *data, int (*match)(struct gpio_chip *gc, - void *data)) + const void *data)) { struct gpio_device *gdev; @@ -1141,7 +1141,7 @@ struct gpio_device *gpio_device_find(void *data, } EXPORT_SYMBOL_GPL(gpio_device_find); -static int gpio_chip_match_by_label(struct gpio_chip *gc, void *label) +static int gpio_chip_match_by_label(struct gpio_chip *gc, const void *label) { return gc->label && !strcmp(gc->label, label); } @@ -1161,7 +1161,7 @@ struct gpio_device *gpio_device_find_by_label(const char *label) } EXPORT_SYMBOL_GPL(gpio_device_find_by_label); -static int gpio_chip_match_by_fwnode(struct gpio_chip *gc, void *fwnode) +static int gpio_chip_match_by_fwnode(struct gpio_chip *gc, const void *fwnode) { return device_match_fwnode(&gc->gpiodev->dev, fwnode); } |