Merge tag 'regulator-v5.5' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator

Pull regulator updates from Mark Brown:
 "Another fairly quiet release for the regulator API, some work all
  around including some core work but mostly in specialist or driver
  specific code:

   - Fix for powering off boot-on regulators

   - Enhancements to the coupled regulator support introduced in the
     last release

   - Conversion of a bunch of drivers to the fwnode API for GPIOs

   - Mode support for DA9062

   - New device support for Qualcomm PM1650, PM8004 and PM895 and
     Silergy SR83X

   - Removal of obsolete AB8505 support"

* tag 'regulator-v5.5' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator: (49 commits)
  regulator: da9062: Return REGULATOR_MODE_INVALID for invalid mode
  regulator: Fix Kconfig indentation
  regulator: tps6105x: add optional devicetree support
  tps6105x: add optional devicetree support
  regulator: rn5t618: fix rc5t619 ldo10 enable
  regulator: vexpress: Use PTR_ERR_OR_ZERO() to simplify code
  dt-bindings: mfd: da9062: describe buck modes
  regulator: da9062: add of_map_mode support for bucks
  regulator: da9062: refactor buck modes into header
  regulator: stpmic1: Set a default ramp delay value
  regulator: core: Let boot-on regulators be powered off
  regulator: core: Don't try to remove device links if add failed
  regulator: ab8500: Remove SYSCLKREQ from enum ab8505_regulator_id
  regulator: ab8500: Remove AB8505 USB regulator
  regulator: fan53555: add chip id for Silergy SYR83X
  regulator: fixed: add off-on-delay
  dt-bindings: regulator: fixed: add off-on-delay-us property
  regulator: core: Allow generic coupling only for always-on regulators
  regulator: core: Release coupled_rdevs on regulator_init_coupling() error
  regulator: bd70528: Add MODULE_ALIAS to allow module auto loading
  ...

1 files changed, 16 insertions, 3 deletions

diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
index a46be221dbdc..679ad3d2ed23 100644
--- a/drivers/regulator/core.c
+++ b/drivers/regulator/core.c
@@ -1403,7 +1403,9 @@ static int set_machine_constraints(struct regulator_dev *rdev,
 			rdev_err(rdev, "failed to enable\n");
 			return ret;
 		}
-		rdev->use_count++;
+
+		if (rdev->constraints->always_on)
+			rdev->use_count++;
 	}
 
 	print_constraints(rdev);
@@ -1844,6 +1846,7 @@ struct regulator *_regulator_get(struct device *dev, const char *id,
 	struct regulator_dev *rdev;
 	struct regulator *regulator;
 	const char *devname = dev ? dev_name(dev) : "deviceless";
+	struct device_link *link;
 	int ret;
 
 	if (get_type >= MAX_GET_TYPE) {
@@ -1951,7 +1954,9 @@ struct regulator *_regulator_get(struct device *dev, const char *id,
 			rdev->use_count = 0;
 	}
 
-	device_link_add(dev, &rdev->dev, DL_FLAG_STATELESS);
+	link = device_link_add(dev, &rdev->dev, DL_FLAG_STATELESS);
+	if (!IS_ERR_OR_NULL(link))
+		regulator->device_link = true;
 
 	return regulator;
 }
@@ -2046,7 +2051,8 @@ static void _regulator_put(struct regulator *regulator)
 	debugfs_remove_recursive(regulator->debugfs);
 
 	if (regulator->dev) {
-		device_link_remove(regulator->dev, &rdev->dev);
+		if (regulator->device_link)
+			device_link_remove(regulator->dev, &rdev->dev);
 
 		/* remove any sysfs entries */
 		sysfs_remove_link(&rdev->dev.kobj, regulator->supply_name);
@@ -4963,6 +4969,12 @@ static int generic_coupler_attach(struct regulator_coupler *coupler,
 		return -EPERM;
 	}
 
+	if (!rdev->constraints->always_on) {
+		rdev_err(rdev,
+			 "Coupling of a non always-on regulator is unimplemented\n");
+		return -ENOTSUPP;
+	}
+
 	return 0;
 }
 
@@ -5198,6 +5210,7 @@ unset_supplies:
 	regulator_remove_coupling(rdev);
 	mutex_unlock(&regulator_list_mutex);
 wash:
+	kfree(rdev->coupling_desc.coupled_rdevs);
 	kfree(rdev->constraints);
 	mutex_lock(&regulator_list_mutex);
 	regulator_ena_gpio_free(rdev);