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authorLars-Peter Clausen <lars@metafoo.de>2011-05-25 16:20:31 -0700
committerGrant Likely <grant.likely@secretlab.ca>2011-05-27 17:56:45 -0600
commit7c295975a85b049385dfe0d5ee0d4d543619fbdc (patch)
tree447683c4ddaf6e4380ad8f5f5dd20d4576f7428e
parent3474cb3cc0140f9cf6ca56983f8180b4b4c5c36a (diff)
downloadop-kernel-dev-7c295975a85b049385dfe0d5ee0d4d543619fbdc.zip
op-kernel-dev-7c295975a85b049385dfe0d5ee0d4d543619fbdc.tar.gz
gpio: make gpio_{request,free}_array gpio array parameter const
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> Acked-by: Eric Miao <eric.y.miao@gmail.com> Acked-by: Wolfram Sang <w.sang@pengutronix.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
-rw-r--r--drivers/gpio/gpiolib.c4
-rw-r--r--include/asm-generic/gpio.h4
-rw-r--r--include/linux/gpio.h4
3 files changed, 6 insertions, 6 deletions
diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c
index 137a8ca..a971e3d 100644
--- a/drivers/gpio/gpiolib.c
+++ b/drivers/gpio/gpiolib.c
@@ -1296,7 +1296,7 @@ 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;
@@ -1319,7 +1319,7 @@ 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 a98b52c..fcdcb5d 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 0f8265f..32d47e7 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();
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