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devres: Add devm_is_action_added() helper

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In some code we would like to know if the action in device managed resources
was added by devm_add_action() family of calls. Introduce a helper for that.

Reviewed-by: Raag Jadav <raag.jadav@intel.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Zijun Hu <quic_zijuhu@quicinc.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://lore.kernel.org/r/20250220162238.2738038-3-andriy.shevchenko@linux.intel.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
This commit is contained in:
Andy Shevchenko 2025-02-20 18:20:27 +02:00 • committed by Bartosz Golaszewski
parent f5e5631df5
commit e383bb8f95
2 changed files with 13 additions and 0 deletions
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11
drivers/base/devres.c
View file

@ -759,6 +759,17 @@ int __devm_add_action(struct device *dev, void (*action)(void *), void *data, co
}
EXPORT_SYMBOL_GPL(__devm_add_action);
bool devm_is_action_added(struct device *dev, void (*action)(void *), void *data)
{
struct action_devres devres = {
.data = data,
.action = action,
};
return devres_find(dev, devm_action_release, devm_action_match, &devres);
}
EXPORT_SYMBOL_GPL(devm_is_action_added);
/**
* devm_remove_action_nowarn() - removes previously added custom action
* @dev: Device that owns the action

2
include/linux/device/devres.h
View file

@ -165,4 +165,6 @@ static inline int __devm_add_action_or_reset(struct device *dev, void (*action)(
#define devm_add_action_or_reset(dev, action, data) \
__devm_add_action_or_reset(dev, action, data, #action)
bool devm_is_action_added(struct device *dev, void (*action)(void *), void *data);
#endif /* _DEVICE_DEVRES_H_ */