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Wysocki" , Danilo Krummrich , Linus Walleij , Bartosz Golaszewski Subject: [PATCH v1 2/4] devres: Add devm_is_action_added() helper Date: Thu, 20 Feb 2025 15:44:58 +0200 Message-ID: <20250220141645.2694039-3-andriy.shevchenko@linux.intel.com> X-Mailer: git-send-email 2.45.1.3035.g276e886db78b In-Reply-To: <20250220141645.2694039-1-andriy.shevchenko@linux.intel.com> References: <20250220141645.2694039-1-andriy.shevchenko@linux.intel.com> Precedence: bulk X-Mailing-List: linux-gpio@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 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. Signed-off-by: Andy Shevchenko --- drivers/base/devres.c | 11 +++++++++++ include/linux/device/devres.h | 2 ++ 2 files changed, 13 insertions(+) diff --git a/drivers/base/devres.c b/drivers/base/devres.c index 93e7779ef21e..7c2babfa9396 100644 --- a/drivers/base/devres.c +++ b/drivers/base/devres.c @@ -749,6 +749,17 @@ 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 diff --git a/include/linux/device/devres.h b/include/linux/device/devres.h index 9cd1787ef28e..ae696d10faff 100644 --- a/include/linux/device/devres.h +++ b/include/linux/device/devres.h @@ -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_ */