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ramips: gpio: fix compilation if CONFIG_GPIO_SYSFS=n

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If CONFIG_GPIO_SYSFS=n, compilation fails with
  drivers/built-in.o: In function `gpio_export_with_name':
  include/asm-generic/gpio.h:128: undefined reference to `__gpiod_export'

This is because the stub in that case has the wrong name,
_gpiod_export() - note the missing underscore (_) at the
start.

Fix the stub, and add the correct prototype for the real
implementation.

Signed-off-by: André Draszik <git@andred.net>
This commit is contained in:
André Draszik 2018-02-22 11:04:28 +00:00 committed by John Crispin
parent 4fd8722056
commit cff2dedebc
1 changed files with 3 additions and 12 deletions
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15
target/linux/ramips/patches-4.9/0024-GPIO-add-named-gpio-exports.patch
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@ -127,11 +127,10 @@ Signed-off-by: John Crispin <blogic@openwrt.org>
static int match_export(struct device *dev, const void *desc)
--- a/include/asm-generic/gpio.h
+++ b/include/asm-generic/gpio.h
@@ -126,6 +126,12 @@ static inline int gpio_export(unsigned g
@@ -126,6 +126,11 @@ static inline int gpio_export(unsigned g
return gpiod_export(gpio_to_desc(gpio), direction_may_change);
}
+int __gpiod_export(struct gpio_desc *desc, bool direction_may_change, const char *name);
+static inline int gpio_export_with_name(unsigned gpio, bool direction_may_change, const char *name)
+{
+ return __gpiod_export(gpio_to_desc(gpio), direction_may_change, name);
@ -142,21 +141,13 @@ Signed-off-by: John Crispin <blogic@openwrt.org>
{
--- a/include/linux/gpio/consumer.h
+++ b/include/linux/gpio/consumer.h
@@ -427,6 +427,7 @@ static inline struct gpio_desc *devm_get
#if IS_ENABLED(CONFIG_GPIOLIB) && IS_ENABLED(CONFIG_GPIO_SYSFS)
+int _gpiod_export(struct gpio_desc *desc, bool direction_may_change, const char *name);
int gpiod_export(struct gpio_desc *desc, bool direction_may_change);
int gpiod_export_link(struct device *dev, const char *name,
struct gpio_desc *desc);
@@ -434,6 +435,13 @@ void gpiod_unexport(struct gpio_desc *de
#else /* CONFIG_GPIOLIB && CONFIG_GPIO_SYSFS */
+static inline int _gpiod_export(struct gpio_desc *desc,
+ bool direction_may_change,
+ const char *name)
+ bool direction_may_change,
+ const char *name)
+{
+ return -ENOSYS;
+}