pinctrl: core: Remove unused devm_pinctrl_unregister()

There are no users, drop it for good.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
Signed-off-by: Linus Walleij <linusw@kernel.org>

Author: andy-shev

Documentation/driver-api/driver-model/devres.rst

@@ -408,7 +408,6 @@ PINCTRL
   devm_pinctrl_get_select()
   devm_pinctrl_register()
   devm_pinctrl_register_and_init()
-  devm_pinctrl_unregister()
 
 POWER
   devm_reboot_mode_register()

drivers/pinctrl/core.c

@@ -2323,16 +2323,6 @@ static void devm_pinctrl_dev_release(struct device *dev, void *res)
 	pinctrl_unregister(pctldev);
 }
 
-static int devm_pinctrl_dev_match(struct device *dev, void *res, void *data)
-{
-	struct pctldev **r = res;
-
-	if (WARN_ON(!r || !*r))
-		return 0;
-
-	return *r == data;
-}
-
 /**
  * devm_pinctrl_register() - Resource managed version of pinctrl_register().
  * @dev: parent device for this pin controller
@@ -2403,18 +2393,6 @@ int devm_pinctrl_register_and_init(struct device *dev,
 }
 EXPORT_SYMBOL_GPL(devm_pinctrl_register_and_init);
 
-/**
- * devm_pinctrl_unregister() - Resource managed version of pinctrl_unregister().
- * @dev: device for which resource was allocated
- * @pctldev: the pinctrl device to unregister.
- */
-void devm_pinctrl_unregister(struct device *dev, struct pinctrl_dev *pctldev)
-{
-	WARN_ON(devres_release(dev, devm_pinctrl_dev_release,
-			       devm_pinctrl_dev_match, pctldev));
-}
-EXPORT_SYMBOL_GPL(devm_pinctrl_unregister);
-
 static int __init pinctrl_init(void)
 {
 	pr_debug("initialized pinctrl subsystem\n");

include/linux/pinctrl/pinctrl.h

@@ -187,9 +187,6 @@ extern struct pinctrl_dev *devm_pinctrl_register(struct device *dev,
 				const struct pinctrl_desc *pctldesc,
 				void *driver_data);
 
-extern void devm_pinctrl_unregister(struct device *dev,
-				struct pinctrl_dev *pctldev);
-
 extern void pinctrl_add_gpio_range(struct pinctrl_dev *pctldev,
 				struct pinctrl_gpio_range *range);
 extern void pinctrl_add_gpio_ranges(struct pinctrl_dev *pctldev,