diff mbox series

[1/2] pwm: Add might_sleep() annotations for !CONFIG_PWM API functions

Message ID 20210909094849.313936-2-u.kleine-koenig@pengutronix.de
State Accepted
Headers show
Series pwm: add might_sleep annotations | expand

Commit Message

Uwe Kleine-König Sept. 9, 2021, 9:48 a.m. UTC 
The normal implementations of these functions make use of mutexes. To
make it obvious that these functions might sleep also add annotations to
the dummy implementations in the !CONFIG_PWM case.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
---
 include/linux/pwm.h | 9 +++++++++
 1 file changed, 9 insertions(+)
diff mbox series

Patch

diff --git a/include/linux/pwm.h b/include/linux/pwm.h
index 725c9b784e60..515e33978e97 100644
--- a/include/linux/pwm.h
+++ b/include/linux/pwm.h
@@ -429,11 +429,13 @@  struct pwm_device *devm_fwnode_pwm_get(struct device *dev,
 #else
 static inline struct pwm_device *pwm_request(int pwm_id, const char *label)
 {
+	might_sleep();
 	return ERR_PTR(-ENODEV);
 }
 
 static inline void pwm_free(struct pwm_device *pwm)
 {
+	might_sleep();
 }
 
 static inline int pwm_apply_state(struct pwm_device *pwm,
@@ -493,12 +495,14 @@  static inline struct pwm_device *pwm_request_from_chip(struct pwm_chip *chip,
 						       unsigned int index,
 						       const char *label)
 {
+	might_sleep();
 	return ERR_PTR(-ENODEV);
 }
 
 static inline struct pwm_device *pwm_get(struct device *dev,
 					 const char *consumer)
 {
+	might_sleep();
 	return ERR_PTR(-ENODEV);
 }
 
@@ -506,16 +510,19 @@  static inline struct pwm_device *of_pwm_get(struct device *dev,
 					    struct device_node *np,
 					    const char *con_id)
 {
+	might_sleep();
 	return ERR_PTR(-ENODEV);
 }
 
 static inline void pwm_put(struct pwm_device *pwm)
 {
+	might_sleep();
 }
 
 static inline struct pwm_device *devm_pwm_get(struct device *dev,
 					      const char *consumer)
 {
+	might_sleep();
 	return ERR_PTR(-ENODEV);
 }
 
@@ -523,6 +530,7 @@  static inline struct pwm_device *devm_of_pwm_get(struct device *dev,
 						 struct device_node *np,
 						 const char *con_id)
 {
+	might_sleep();
 	return ERR_PTR(-ENODEV);
 }
 
@@ -530,6 +538,7 @@  static inline struct pwm_device *
 devm_fwnode_pwm_get(struct device *dev, struct fwnode_handle *fwnode,
 		    const char *con_id)
 {
+	might_sleep();
 	return ERR_PTR(-ENODEV);
 }
 #endif