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iio: triggers: Use macros to avoid boilerplate assignment of owner. 

This trig_ops.owner assignment occurs in all trigger drivers and
can be simply automated using a macro as has been done in many
other places in the kernel.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Lars-Peter Clausen <lars@metafoo.de>
This commit is contained in:
Jonathan Cameron 2017-07-23 17:25:44 +01:00 committed by Jonathan Cameron
parent 63b19547cc
commit 035c70aeb6
2 changed files with 24 additions and 11 deletions
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18
drivers/iio/industrialio-trigger.c
View File

@ -66,10 +66,13 @@ ATTRIBUTE_GROUPS(iio_trig_dev);
static struct iio_trigger *__iio_trigger_find_by_name(const char *name);
int iio_trigger_register(struct iio_trigger *trig_info)
int __iio_trigger_register(struct iio_trigger *trig_info,
struct module *this_mod)
{
int ret;
trig_info->owner = this_mod;
/* trig_info->ops is required for the module member */
if (!trig_info->ops)
return -EINVAL;
@ -105,7 +108,7 @@ error_unregister_id:
ida_simple_remove(&iio_trigger_ida, trig_info->id);
return ret;
}
EXPORT_SYMBOL(iio_trigger_register);
EXPORT_SYMBOL(__iio_trigger_register);
void iio_trigger_unregister(struct iio_trigger *trig_info)
{
@ -663,9 +666,10 @@ static void devm_iio_trigger_unreg(struct device *dev, void *res)
}
/**
* devm_iio_trigger_register - Resource-managed iio_trigger_register()
* __devm_iio_trigger_register - Resource-managed iio_trigger_register()
* @dev: device this trigger was allocated for
* @trig_info: trigger to register
* @this_mod: module registering the trigger
*
* Managed iio_trigger_register(). The IIO trigger registered with this
* function is automatically unregistered on driver detach. This function
@ -678,7 +682,9 @@ static void devm_iio_trigger_unreg(struct device *dev, void *res)
* RETURNS:
* 0 on success, negative error number on failure.
*/
int devm_iio_trigger_register(struct device *dev, struct iio_trigger *trig_info)
int __devm_iio_trigger_register(struct device *dev,
struct iio_trigger *trig_info,
struct module *this_mod)
{
struct iio_trigger **ptr;
int ret;
@ -688,7 +694,7 @@ int devm_iio_trigger_register(struct device *dev, struct iio_trigger *trig_info)
return -ENOMEM;
*ptr = trig_info;
ret = iio_trigger_register(trig_info);
ret = __iio_trigger_register(trig_info, this_mod);
if (!ret)
devres_add(dev, ptr);
else
@ -696,7 +702,7 @@ int devm_iio_trigger_register(struct device *dev, struct iio_trigger *trig_info)
return ret;
}
EXPORT_SYMBOL_GPL(devm_iio_trigger_register);
EXPORT_SYMBOL_GPL(__devm_iio_trigger_register);
/**
* devm_iio_trigger_unregister - Resource-managed iio_trigger_unregister()

17
include/linux/iio/trigger.h
View File

@ -62,6 +62,7 @@ struct iio_trigger_ops {
**/
struct iio_trigger {
const struct iio_trigger_ops *ops;
struct module *owner;
int id;
const char *name;
struct device dev;
@ -87,14 +88,14 @@ static inline struct iio_trigger *to_iio_trigger(struct device *d)
static inline void iio_trigger_put(struct iio_trigger *trig)
{
module_put(trig->ops->owner);
module_put(trig->owner);
put_device(&trig->dev);
}
static inline struct iio_trigger *iio_trigger_get(struct iio_trigger *trig)
{
get_device(&trig->dev);
__module_get(trig->ops->owner);
__module_get(trig->owner);
return trig;
}
@ -127,10 +128,16 @@ static inline void *iio_trigger_get_drvdata(struct iio_trigger *trig)
* iio_trigger_register() - register a trigger with the IIO core
* @trig_info: trigger to be registered
**/
int iio_trigger_register(struct iio_trigger *trig_info);
#define iio_trigger_register(trig_info) \
__iio_trigger_register((trig_info), THIS_MODULE)
int __iio_trigger_register(struct iio_trigger *trig_info,
struct module *this_mod);
int devm_iio_trigger_register(struct device *dev,
struct iio_trigger *trig_info);
#define devm_iio_trigger_register(dev, trig_info) \
__devm_iio_trigger_register((dev), (trig_info), THIS_MODULE)
int __devm_iio_trigger_register(struct device *dev,
struct iio_trigger *trig_info,
struct module *this_mod);
/**
* iio_trigger_unregister() - unregister a trigger from the core