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gpio: make flags mandatory for gpiod_get functions

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Now that all[1] users of the gpiod_get functions are converted to make
use of the up to now optional flags parameter, make it mandatory which
allows to remove some cpp magic.

[1] all but etraxfs-uart which is broken anyhow and I'm allowed to
    ignore it by Jesper Nilsson :-)

Acked-by: Alexandre Courbot <acourbot@nvidia.com>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
This commit is contained in:
Uwe Kleine-König 2015-02-11 11:52:37 +01:00
parent eac4778019
commit b17d1bf16c
3 changed files with 40 additions and 76 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
drivers/gpio/devres.c
View File

@ -59,13 +59,13 @@ static int devm_gpiod_match_array(struct device *dev, void *res, void *data)
* automatically disposed on driver detach. See gpiod_get() for detailed
* information about behavior and return values.
*/
struct gpio_desc *__must_check __devm_gpiod_get(struct device *dev,
struct gpio_desc *__must_check devm_gpiod_get(struct device *dev,
const char *con_id,
enum gpiod_flags flags)
{
return devm_gpiod_get_index(dev, con_id, 0, flags);
}
EXPORT_SYMBOL(__devm_gpiod_get);
EXPORT_SYMBOL(devm_gpiod_get);
/**
* devm_gpiod_get_optional - Resource-managed gpiod_get_optional()
@ -77,13 +77,13 @@ EXPORT_SYMBOL(__devm_gpiod_get);
* are automatically disposed on driver detach. See gpiod_get_optional() for
* detailed information about behavior and return values.
*/
struct gpio_desc *__must_check __devm_gpiod_get_optional(struct device *dev,
struct gpio_desc *__must_check devm_gpiod_get_optional(struct device *dev,
const char *con_id,
enum gpiod_flags flags)
{
return devm_gpiod_get_index_optional(dev, con_id, 0, flags);
}
EXPORT_SYMBOL(__devm_gpiod_get_optional);
EXPORT_SYMBOL(devm_gpiod_get_optional);
/**
* devm_gpiod_get_index - Resource-managed gpiod_get_index()
@ -96,7 +96,7 @@ EXPORT_SYMBOL(__devm_gpiod_get_optional);
* automatically disposed on driver detach. See gpiod_get_index() for detailed
* information about behavior and return values.
*/
struct gpio_desc *__must_check __devm_gpiod_get_index(struct device *dev,
struct gpio_desc *__must_check devm_gpiod_get_index(struct device *dev,
const char *con_id,
unsigned int idx,
enum gpiod_flags flags)
@ -120,7 +120,7 @@ struct gpio_desc *__must_check __devm_gpiod_get_index(struct device *dev,
return desc;
}
EXPORT_SYMBOL(__devm_gpiod_get_index);
EXPORT_SYMBOL(devm_gpiod_get_index);
/**
* devm_get_gpiod_from_child - get a GPIO descriptor from a device's child node
@ -182,10 +182,10 @@ EXPORT_SYMBOL(devm_get_gpiod_from_child);
* gpiod_get_index_optional() for detailed information about behavior and
* return values.
*/
struct gpio_desc *__must_check __devm_gpiod_get_index_optional(struct device *dev,
struct gpio_desc *__must_check devm_gpiod_get_index_optional(struct device *dev,
const char *con_id,
unsigned int index,
enum gpiod_flags flags)
enum gpiod_flags flags)
{
struct gpio_desc *desc;
@ -197,7 +197,7 @@ struct gpio_desc *__must_check __devm_gpiod_get_index_optional(struct device *de
return desc;
}
EXPORT_SYMBOL(__devm_gpiod_get_index_optional);
EXPORT_SYMBOL(devm_gpiod_get_index_optional);
/**
* devm_gpiod_get_array - Resource-managed gpiod_get_array()

16
drivers/gpio/gpiolib.c
View File

@ -1894,12 +1894,12 @@ EXPORT_SYMBOL_GPL(gpiod_count);
* dev, -ENOENT if no GPIO has been assigned to the requested function, or
* another IS_ERR() code if an error occurred while trying to acquire the GPIO.
*/
struct gpio_desc *__must_check __gpiod_get(struct device *dev, const char *con_id,
struct gpio_desc *__must_check gpiod_get(struct device *dev, const char *con_id,
enum gpiod_flags flags)
{
return gpiod_get_index(dev, con_id, 0, flags);
}
EXPORT_SYMBOL_GPL(__gpiod_get);
EXPORT_SYMBOL_GPL(gpiod_get);
/**
* gpiod_get_optional - obtain an optional GPIO for a given GPIO function
@ -1911,13 +1911,13 @@ EXPORT_SYMBOL_GPL(__gpiod_get);
* the requested function it will return NULL. This is convenient for drivers
* that need to handle optional GPIOs.
*/
struct gpio_desc *__must_check __gpiod_get_optional(struct device *dev,
struct gpio_desc *__must_check gpiod_get_optional(struct device *dev,
const char *con_id,
enum gpiod_flags flags)
{
return gpiod_get_index_optional(dev, con_id, 0, flags);
}
EXPORT_SYMBOL_GPL(__gpiod_get_optional);
EXPORT_SYMBOL_GPL(gpiod_get_optional);
/**
@ -1974,7 +1974,7 @@ static int gpiod_configure_flags(struct gpio_desc *desc, const char *con_id,
* requested function and/or index, or another IS_ERR() code if an error
* occurred while trying to acquire the GPIO.
*/
struct gpio_desc *__must_check __gpiod_get_index(struct device *dev,
struct gpio_desc *__must_check gpiod_get_index(struct device *dev,
const char *con_id,
unsigned int idx,
enum gpiod_flags flags)
@ -2023,7 +2023,7 @@ struct gpio_desc *__must_check __gpiod_get_index(struct device *dev,
return desc;
}
EXPORT_SYMBOL_GPL(__gpiod_get_index);
EXPORT_SYMBOL_GPL(gpiod_get_index);
/**
* fwnode_get_named_gpiod - obtain a GPIO from firmware node
@ -2092,7 +2092,7 @@ EXPORT_SYMBOL_GPL(fwnode_get_named_gpiod);
* specified index was assigned to the requested function it will return NULL.
* This is convenient for drivers that need to handle optional GPIOs.
*/
struct gpio_desc *__must_check __gpiod_get_index_optional(struct device *dev,
struct gpio_desc *__must_check gpiod_get_index_optional(struct device *dev,
const char *con_id,
unsigned int index,
enum gpiod_flags flags)
@ -2107,7 +2107,7 @@ struct gpio_desc *__must_check __gpiod_get_index_optional(struct device *dev,
return desc;
}
EXPORT_SYMBOL_GPL(__gpiod_get_index_optional);
EXPORT_SYMBOL_GPL(gpiod_get_index_optional);
/**
* gpiod_hog - Hog the specified GPIO desc given the provided flags

82
include/linux/gpio/consumer.h
View File

@ -47,17 +47,17 @@ enum gpiod_flags {
int gpiod_count(struct device *dev, const char *con_id);
/* Acquire and dispose GPIOs */
struct gpio_desc *__must_check __gpiod_get(struct device *dev,
struct gpio_desc *__must_check gpiod_get(struct device *dev,
const char *con_id,
enum gpiod_flags flags);
struct gpio_desc *__must_check __gpiod_get_index(struct device *dev,
struct gpio_desc *__must_check gpiod_get_index(struct device *dev,
const char *con_id,
unsigned int idx,
enum gpiod_flags flags);
struct gpio_desc *__must_check __gpiod_get_optional(struct device *dev,
struct gpio_desc *__must_check gpiod_get_optional(struct device *dev,
const char *con_id,
enum gpiod_flags flags);
struct gpio_desc *__must_check __gpiod_get_index_optional(struct device *dev,
struct gpio_desc *__must_check gpiod_get_index_optional(struct device *dev,
const char *con_id,
unsigned int index,
enum gpiod_flags flags);
@ -70,18 +70,18 @@ struct gpio_descs *__must_check gpiod_get_array_optional(struct device *dev,
void gpiod_put(struct gpio_desc *desc);
void gpiod_put_array(struct gpio_descs *descs);
struct gpio_desc *__must_check __devm_gpiod_get(struct device *dev,
struct gpio_desc *__must_check devm_gpiod_get(struct device *dev,
const char *con_id,
enum gpiod_flags flags);
struct gpio_desc *__must_check __devm_gpiod_get_index(struct device *dev,
struct gpio_desc *__must_check devm_gpiod_get_index(struct device *dev,
const char *con_id,
unsigned int idx,
enum gpiod_flags flags);
struct gpio_desc *__must_check __devm_gpiod_get_optional(struct device *dev,
struct gpio_desc *__must_check devm_gpiod_get_optional(struct device *dev,
const char *con_id,
enum gpiod_flags flags);
struct gpio_desc *__must_check
__devm_gpiod_get_index_optional(struct device *dev, const char *con_id,
devm_gpiod_get_index_optional(struct device *dev, const char *con_id,
unsigned int index, enum gpiod_flags flags);
struct gpio_descs *__must_check devm_gpiod_get_array(struct device *dev,
const char *con_id,
@ -146,31 +146,31 @@ static inline int gpiod_count(struct device *dev, const char *con_id)
return 0;
}
static inline struct gpio_desc *__must_check __gpiod_get(struct device *dev,
const char *con_id,
enum gpiod_flags flags)
static inline struct gpio_desc *__must_check gpiod_get(struct device *dev,
const char *con_id,
enum gpiod_flags flags)
{
return ERR_PTR(-ENOSYS);
}
static inline struct gpio_desc *__must_check
__gpiod_get_index(struct device *dev,
const char *con_id,
unsigned int idx,
enum gpiod_flags flags)
gpiod_get_index(struct device *dev,
const char *con_id,
unsigned int idx,
enum gpiod_flags flags)
{
return ERR_PTR(-ENOSYS);
}
static inline struct gpio_desc *__must_check
__gpiod_get_optional(struct device *dev, const char *con_id,
enum gpiod_flags flags)
gpiod_get_optional(struct device *dev, const char *con_id,
enum gpiod_flags flags)
{
return ERR_PTR(-ENOSYS);
}
static inline struct gpio_desc *__must_check
__gpiod_get_index_optional(struct device *dev, const char *con_id,
unsigned int index, enum gpiod_flags flags)
gpiod_get_index_optional(struct device *dev, const char *con_id,
unsigned int index, enum gpiod_flags flags)
{
return ERR_PTR(-ENOSYS);
}
@ -206,7 +206,7 @@ static inline void gpiod_put_array(struct gpio_descs *descs)
}
static inline struct gpio_desc *__must_check
__devm_gpiod_get(struct device *dev,
devm_gpiod_get(struct device *dev,
const char *con_id,
enum gpiod_flags flags)
{
@ -214,7 +214,7 @@ __devm_gpiod_get(struct device *dev,
}
static inline
struct gpio_desc *__must_check
__devm_gpiod_get_index(struct device *dev,
devm_gpiod_get_index(struct device *dev,
const char *con_id,
unsigned int idx,
enum gpiod_flags flags)
@ -223,14 +223,14 @@ __devm_gpiod_get_index(struct device *dev,
}
static inline struct gpio_desc *__must_check
__devm_gpiod_get_optional(struct device *dev, const char *con_id,
devm_gpiod_get_optional(struct device *dev, const char *con_id,
enum gpiod_flags flags)
{
return ERR_PTR(-ENOSYS);
}
static inline struct gpio_desc *__must_check
__devm_gpiod_get_index_optional(struct device *dev, const char *con_id,
devm_gpiod_get_index_optional(struct device *dev, const char *con_id,
unsigned int index, enum gpiod_flags flags)
{
return ERR_PTR(-ENOSYS);
@ -424,42 +424,6 @@ static inline struct gpio_desc *devm_get_gpiod_from_child(
#endif /* CONFIG_GPIOLIB */
/*
* Vararg-hacks! This is done to transition the kernel to always pass
* the options flags argument to the below functions. During a transition
* phase these vararg macros make both old-and-newstyle code compile,
* but when all calls to the elder API are removed, these should go away
* and the __gpiod_get() etc functions above be renamed just gpiod_get()
* etc.
*/
#define __gpiod_get(dev, con_id, flags, ...) __gpiod_get(dev, con_id, flags)
#define gpiod_get(varargs...) __gpiod_get(varargs, GPIOD_ASIS)
#define __gpiod_get_index(dev, con_id, index, flags, ...) \
__gpiod_get_index(dev, con_id, index, flags)
#define gpiod_get_index(varargs...) __gpiod_get_index(varargs, GPIOD_ASIS)
#define __gpiod_get_optional(dev, con_id, flags, ...) \
__gpiod_get_optional(dev, con_id, flags)
#define gpiod_get_optional(varargs...) __gpiod_get_optional(varargs, GPIOD_ASIS)
#define __gpiod_get_index_optional(dev, con_id, index, flags, ...) \
__gpiod_get_index_optional(dev, con_id, index, flags)
#define gpiod_get_index_optional(varargs...) \
__gpiod_get_index_optional(varargs, GPIOD_ASIS)
#define __devm_gpiod_get(dev, con_id, flags, ...) \
__devm_gpiod_get(dev, con_id, flags)
#define devm_gpiod_get(varargs...) __devm_gpiod_get(varargs, GPIOD_ASIS)
#define __devm_gpiod_get_index(dev, con_id, index, flags, ...) \
__devm_gpiod_get_index(dev, con_id, index, flags)
#define devm_gpiod_get_index(varargs...) \
__devm_gpiod_get_index(varargs, GPIOD_ASIS)
#define __devm_gpiod_get_optional(dev, con_id, flags, ...) \
__devm_gpiod_get_optional(dev, con_id, flags)
#define devm_gpiod_get_optional(varargs...) \
__devm_gpiod_get_optional(varargs, GPIOD_ASIS)
#define __devm_gpiod_get_index_optional(dev, con_id, index, flags, ...) \
__devm_gpiod_get_index_optional(dev, con_id, index, flags)
#define devm_gpiod_get_index_optional(varargs...) \
__devm_gpiod_get_index_optional(varargs, GPIOD_ASIS)
#if IS_ENABLED(CONFIG_GPIOLIB) && IS_ENABLED(CONFIG_GPIO_SYSFS)
int gpiod_export(struct gpio_desc *desc, bool direction_may_change);