[v3,5/6] pwm: core: Remove unused devm_pwm_put()

Message ID 20210607122458.40073-5-andriy.shevchenko@linux.intel.com
State Accepted
Commit c333b936c1530e76eba4e81091874d1217046131
Headers show
Series
  • [v3,1/6] docs: firmware-guide: ACPI: Add a PWM example
Related show

Commit Message

Andy Shevchenko June 7, 2021, 12:24 p.m.
There are no users and seems no will come of the devm_pwm_put().
Remove the function.

While at it, slightly update documentation.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Uwe Kleine-K├Ânig <u.kleine-koenig@pengutronix.de>
---
v3: added Rb tag (Uwe)
v2: new patch

 .../driver-api/driver-model/devres.rst        |  3 ++-
 Documentation/driver-api/pwm.rst              |  3 ++-
 drivers/pwm/core.c                            | 25 -------------------
 include/linux/pwm.h                           |  5 ----
 4 files changed, 4 insertions(+), 32 deletions(-)

Patch

diff --git a/Documentation/driver-api/driver-model/devres.rst b/Documentation/driver-api/driver-model/devres.rst
index e7e209232246..d2948139411e 100644
--- a/Documentation/driver-api/driver-model/devres.rst
+++ b/Documentation/driver-api/driver-model/devres.rst
@@ -409,7 +409,8 @@  POWER
 
 PWM
   devm_pwm_get()
-  devm_pwm_put()
+  devm_of_pwm_get()
+  devm_fwnode_pwm_get()
 
 REGULATOR
   devm_regulator_bulk_get()
diff --git a/Documentation/driver-api/pwm.rst b/Documentation/driver-api/pwm.rst
index 750734a7f874..ccb06e485756 100644
--- a/Documentation/driver-api/pwm.rst
+++ b/Documentation/driver-api/pwm.rst
@@ -40,7 +40,8 @@  after usage with pwm_free().
 
 New users should use the pwm_get() function and pass to it the consumer
 device or a consumer name. pwm_put() is used to free the PWM device. Managed
-variants of these functions, devm_pwm_get() and devm_pwm_put(), also exist.
+variants of the getter, devm_pwm_get(), devm_of_pwm_get(),
+devm_fwnode_pwm_get(), also exist.
 
 After being requested, a PWM has to be configured using::
 
diff --git a/drivers/pwm/core.c b/drivers/pwm/core.c
index 05a86060d430..4133abb74798 100644
--- a/drivers/pwm/core.c
+++ b/drivers/pwm/core.c
@@ -1165,31 +1165,6 @@  struct pwm_device *devm_fwnode_pwm_get(struct device *dev,
 }
 EXPORT_SYMBOL_GPL(devm_fwnode_pwm_get);
 
-static int devm_pwm_match(struct device *dev, void *res, void *data)
-{
-	struct pwm_device **p = res;
-
-	if (WARN_ON(!p || !*p))
-		return 0;
-
-	return *p == data;
-}
-
-/**
- * devm_pwm_put() - resource managed pwm_put()
- * @dev: device for PWM consumer
- * @pwm: PWM device
- *
- * Release a PWM previously allocated using devm_pwm_get(). Calling this
- * function is usually not needed because devm-allocated resources are
- * automatically released on driver detach.
- */
-void devm_pwm_put(struct device *dev, struct pwm_device *pwm)
-{
-	WARN_ON(devres_release(dev, devm_pwm_release, devm_pwm_match, pwm));
-}
-EXPORT_SYMBOL_GPL(devm_pwm_put);
-
 #ifdef CONFIG_DEBUG_FS
 static void pwm_dbg_show(struct pwm_chip *chip, struct seq_file *s)
 {
diff --git a/include/linux/pwm.h b/include/linux/pwm.h
index 5a73251d28e3..91af518d5037 100644
--- a/include/linux/pwm.h
+++ b/include/linux/pwm.h
@@ -423,7 +423,6 @@  struct pwm_device *devm_of_pwm_get(struct device *dev, struct device_node *np,
 struct pwm_device *devm_fwnode_pwm_get(struct device *dev,
 				       struct fwnode_handle *fwnode,
 				       const char *con_id);
-void devm_pwm_put(struct device *dev, struct pwm_device *pwm);
 #else
 static inline struct pwm_device *pwm_request(int pwm_id, const char *label)
 {
@@ -530,10 +529,6 @@  devm_fwnode_pwm_get(struct device *dev, struct fwnode_handle *fwnode,
 {
 	return ERR_PTR(-ENODEV);
 }
-
-static inline void devm_pwm_put(struct device *dev, struct pwm_device *pwm)
-{
-}
 #endif
 
 static inline void pwm_apply_args(struct pwm_device *pwm)