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Subject[PATCH] gpio: Make gpio_{request,free}_array gpio array parameter const
Date
gpio_{request,free}_array should not (and do not) modify the passed gpio array,
so make the parameter const.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
---
drivers/gpio/gpiolib.c | 4 ++--
include/asm-generic/gpio.h | 4 ++--
include/linux/gpio.h | 4 ++--
3 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c
index 649550e..27016c4 100644
--- a/drivers/gpio/gpiolib.c
+++ b/drivers/gpio/gpiolib.c
@@ -1293,7 +1293,7 @@ EXPORT_SYMBOL_GPL(gpio_request_one);
* @array: array of the 'struct gpio'
* @num: how many GPIOs in the array
*/
-int gpio_request_array(struct gpio *array, size_t num)
+int gpio_request_array(const struct gpio *array, size_t num)
{
int i, err;

@@ -1316,7 +1316,7 @@ EXPORT_SYMBOL_GPL(gpio_request_array);
* @array: array of the 'struct gpio'
* @num: how many GPIOs in the array
*/
-void gpio_free_array(struct gpio *array, size_t num)
+void gpio_free_array(const struct gpio *array, size_t num)
{
while (num--)
gpio_free((array++)->gpio);
diff --git a/include/asm-generic/gpio.h b/include/asm-generic/gpio.h
index ff5c660..05119e7 100644
--- a/include/asm-generic/gpio.h
+++ b/include/asm-generic/gpio.h
@@ -193,8 +193,8 @@ struct gpio {
};

extern int gpio_request_one(unsigned gpio, unsigned long flags, const char *label);
-extern int gpio_request_array(struct gpio *array, size_t num);
-extern void gpio_free_array(struct gpio *array, size_t num);
+extern int gpio_request_array(const struct gpio *array, size_t num);
+extern void gpio_free_array(const struct gpio *array, size_t num);

#ifdef CONFIG_GPIO_SYSFS

diff --git a/include/linux/gpio.h b/include/linux/gpio.h
index 32720ba..b2b610f 100644
--- a/include/linux/gpio.h
+++ b/include/linux/gpio.h
@@ -41,7 +41,7 @@ static inline int gpio_request_one(unsigned gpio,
return -ENOSYS;
}

-static inline int gpio_request_array(struct gpio *array, size_t num)
+static inline int gpio_request_array(const struct gpio *array, size_t num)
{
return -ENOSYS;
}
@@ -54,7 +54,7 @@ static inline void gpio_free(unsigned gpio)
WARN_ON(1);
}

-static inline void gpio_free_array(struct gpio *array, size_t num)
+static inline void gpio_free_array(const struct gpio *array, size_t num)
{
might_sleep();

--
1.7.2.3


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