Merge tag 'leds-for-5.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/j.anaszewski/linux-leds

Pull LED updates from Jacek Anaszewski:
 "In this cycle we've finally managed to contribute the patch set
  sorting out LED naming issues. Besides that there are many changes
  scattered among various LED class drivers and triggers.

  LED naming related improvements:

   - add new 'function' and 'color' fwnode properties and deprecate
     'label' property which has been frequently abused for conveying
     vendor specific names that have been available in sysfs anyway

   - introduce a set of standard LED_FUNCTION* definitions

   - introduce a set of standard LED_COLOR_ID* definitions

   - add a new {devm_}led_classdev_register_ext() API with the
     capability of automatic LED name composition basing on the
     properties available in the passed fwnode; the function is
     backwards compatible in a sense that it uses 'label' data, if
     present in the fwnode, for creating LED name

   - add tools/leds/get_led_device_info.sh script for retrieving LED
     vendor, product and bus names, if applicable; it also performs
     basic validation of an LED name

   - update following drivers and their DT bindings to use the new LED
     registration API:

        - leds-an30259a, leds-gpio, leds-as3645a, leds-aat1290, leds-cr0014114,
          leds-lm3601x, leds-lm3692x, leds-lp8860, leds-lt3593, leds-sc27xx-blt

  Other LED class improvements:

   - replace {devm_}led_classdev_register() macros with inlines

   - allow to call led_classdev_unregister() unconditionally

   - switch to use fwnode instead of be stuck with OF one

  LED triggers improvements:

   - led-triggers:
        - fix dereferencing of null pointer
        - fix a memory leak bug

   - ledtrig-gpio:
        - GPIO 0 is valid

  Drop superseeded apu2/3 support from leds-apu since for apu2+ a newer,
  more complete driver exists, based on a generic driver for the AMD
  SOCs gpio-controller, supporting LEDs as well other devices:

   - drop profile field from priv data

   - drop iosize field from priv data

   - drop enum_apu_led_platform_types

   - drop superseeded apu2/3 led support

   - add pr_fmt prefix for better log output

   - fix error message on probing failure

  Other misc fixes and improvements to existing LED class drivers:

   - leds-ns2, leds-max77650:
        - add of_node_put() before return

   - leds-pwm, leds-is31fl32xx:
        - use struct_size() helper

   - leds-lm3697, leds-lm36274, leds-lm3532:
        - switch to use fwnode_property_count_uXX()

   - leds-lm3532:
        - fix brightness control for i2c mode
        - change the define for the fs current register
        - fixes for the driver for stability
        - add full scale current configuration
        - dt: Add property for full scale current.
        - avoid potentially unpaired regulator calls
        - move static keyword to the front of declarations
        - fix optional led-max-microamp prop error handling

   - leds-max77650:
        - add of_node_put() before return
        - add MODULE_ALIAS()
        - Switch to fwnode property API

   - leds-as3645a:
        - fix misuse of strlcpy

   - leds-netxbig:
        - add of_node_put() in netxbig_leds_get_of_pdata()
        - remove legacy board-file support

   - leds-is31fl319x:
        - simplify getting the adapter of a client

   - leds-ti-lmu-common:
        - fix coccinelle issue
        - move static keyword to the front of declaration

   - leds-syscon:
        - use resource managed variant of device register

   - leds-ktd2692:
        - fix a typo in the name of a constant

   - leds-lp5562:
        - allow firmware files up to the maximum length

   - leds-an30259a:
        - fix typo

   - leds-pca953x:
        - include the right header"

* tag 'leds-for-5.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/j.anaszewski/linux-leds: (72 commits)
  leds: lm3532: Fix optional led-max-microamp prop error handling
  led: triggers: Fix dereferencing of null pointer
  leds: ti-lmu-common: Move static keyword to the front of declaration
  leds: lm3532: Move static keyword to the front of declarations
  leds: trigger: gpio: GPIO 0 is valid
  leds: pwm: Use struct_size() helper
  leds: is31fl32xx: Use struct_size() helper
  leds: ti-lmu-common: Fix coccinelle issue in TI LMU
  leds: lm3532: Avoid potentially unpaired regulator calls
  leds: syscon: Use resource managed variant of device register
  leds: Replace {devm_}led_classdev_register() macros with inlines
  leds: Allow to call led_classdev_unregister() unconditionally
  leds: lm3532: Add full scale current configuration
  dt: lm3532: Add property for full scale current.
  leds: lm3532: Fixes for the driver for stability
  leds: lm3532: Change the define for the fs current register
  leds: lm3532: Fix brightness control for i2c mode
  leds: Switch to use fwnode instead of be stuck with OF one
  leds: max77650: Switch to fwnode property API
  led: triggers: Fix a memory leak bug
  ...

75 files changed, 654 insertions, 858 deletions

diff --git a/drivers/amba/tegra-ahb.c b/drivers/amba/tegra-ahb.c
index aa64eece77a6..57d3b2e2d007 100644
--- a/drivers/amba/tegra-ahb.c
+++ b/drivers/amba/tegra-ahb.c
@@ -134,22 +134,13 @@ static inline void gizmo_writel(struct tegra_ahb *ahb, u32 value, u32 offset)
 }
 
 #ifdef CONFIG_TEGRA_IOMMU_SMMU
-static int tegra_ahb_match_by_smmu(struct device *dev, const void *data)
-{
-	struct tegra_ahb *ahb = dev_get_drvdata(dev);
-	const struct device_node *dn = data;
-
-	return (ahb->dev->of_node == dn) ? 1 : 0;
-}
-
 int tegra_ahb_enable_smmu(struct device_node *dn)
 {
 	struct device *dev;
 	u32 val;
 	struct tegra_ahb *ahb;
 
-	dev = driver_find_device(&tegra_ahb_driver.driver, NULL, dn,
-				 tegra_ahb_match_by_smmu);
+	dev = driver_find_device_by_of_node(&tegra_ahb_driver.driver, dn);
 	if (!dev)
 		return -EPROBE_DEFER;
 	ahb = dev_get_drvdata(dev);
diff --git a/drivers/base/bus.c b/drivers/base/bus.c
index df3cac739813..a1d1e8256324 100644
--- a/drivers/base/bus.c
+++ b/drivers/base/bus.c
@@ -342,30 +342,6 @@ struct device *bus_find_device(struct bus_type *bus,
 }
 EXPORT_SYMBOL_GPL(bus_find_device);
 
-static int match_name(struct device *dev, const void *data)
-{
-	const char *name = data;
-
-	return sysfs_streq(name, dev_name(dev));
-}
-
-/**
- * bus_find_device_by_name - device iterator for locating a particular device of a specific name
- * @bus: bus type
- * @start: Device to begin with
- * @name: name of the device to match
- *
- * This is similar to the bus_find_device() function above, but it handles
- * searching by a name automatically, no need to write another strcmp matching
- * function.
- */
-struct device *bus_find_device_by_name(struct bus_type *bus,
-				       struct device *start, const char *name)
-{
-	return bus_find_device(bus, start, (void *)name, match_name);
-}
-EXPORT_SYMBOL_GPL(bus_find_device_by_name);
-
 /**
  * subsys_find_device_by_id - find a device with a specific enumeration number
  * @subsys: subsystem
diff --git a/drivers/base/core.c b/drivers/base/core.c
index f0dd8e38fee3..832d4eae501e 100644
--- a/drivers/base/core.c
+++ b/drivers/base/core.c
@@ -2944,13 +2944,6 @@ struct device *device_create_with_groups(struct class *class,
 }
 EXPORT_SYMBOL_GPL(device_create_with_groups);
 
-static int __match_devt(struct device *dev, const void *data)
-{
-	const dev_t *devt = data;
-
-	return dev->devt == *devt;
-}
-
 /**
  * device_destroy - removes a device that was created with device_create()
  * @class: pointer to the struct class that this device was registered with
@@ -2963,7 +2956,7 @@ void device_destroy(struct class *class, dev_t devt)
 {
 	struct device *dev;
 
-	dev = class_find_device(class, NULL, &devt, __match_devt);
+	dev = class_find_device_by_devt(class, devt);
 	if (dev) {
 		put_device(dev);
 		device_unregister(dev);
@@ -3434,8 +3427,38 @@ void device_set_of_node_from_dev(struct device *dev, const struct device *dev2)
 }
 EXPORT_SYMBOL_GPL(device_set_of_node_from_dev);
 
+int device_match_name(struct device *dev, const void *name)
+{
+	return sysfs_streq(dev_name(dev), name);
+}
+EXPORT_SYMBOL_GPL(device_match_name);
+
 int device_match_of_node(struct device *dev, const void *np)
 {
 	return dev->of_node == np;
 }
 EXPORT_SYMBOL_GPL(device_match_of_node);
+
+int device_match_fwnode(struct device *dev, const void *fwnode)
+{
+	return dev_fwnode(dev) == fwnode;
+}
+EXPORT_SYMBOL_GPL(device_match_fwnode);
+
+int device_match_devt(struct device *dev, const void *pdevt)
+{
+	return dev->devt == *(dev_t *)pdevt;
+}
+EXPORT_SYMBOL_GPL(device_match_devt);
+
+int device_match_acpi_dev(struct device *dev, const void *adev)
+{
+	return ACPI_COMPANION(dev) == adev;
+}
+EXPORT_SYMBOL(device_match_acpi_dev);
+
+int device_match_any(struct device *dev, const void *unused)
+{
+	return 1;
+}
+EXPORT_SYMBOL_GPL(device_match_any);
diff --git a/drivers/base/devcon.c b/drivers/base/devcon.c
index 09f28479b243..1d488dc5dd0c 100644
--- a/drivers/base/devcon.c
+++ b/drivers/base/devcon.c
@@ -133,19 +133,13 @@ static struct bus_type *generic_match_buses[] = {
 	NULL,
 };
 
-static int device_fwnode_match(struct device *dev, const void *fwnode)
-{
-	return dev_fwnode(dev) == fwnode;
-}
-
 static void *device_connection_fwnode_match(struct device_connection *con)
 {
 	struct bus_type *bus;
 	struct device *dev;
 
 	for (bus = generic_match_buses[0]; bus; bus++) {
-		dev = bus_find_device(bus, NULL, (void *)con->fwnode,
-				      device_fwnode_match);
+		dev = bus_find_device_by_fwnode(bus, con->fwnode);
 		if (dev && !strncmp(dev_name(dev), con->id, strlen(con->id)))
 			return dev;
 
diff --git a/drivers/base/platform.c b/drivers/base/platform.c
index ec974ba9c0c4..eb018378d60a 100644
--- a/drivers/base/platform.c
+++ b/drivers/base/platform.c
@@ -1202,6 +1202,20 @@ struct bus_type platform_bus_type = {
 };
 EXPORT_SYMBOL_GPL(platform_bus_type);
 
+/**
+ * platform_find_device_by_driver - Find a platform device with a given
+ * driver.
+ * @start: The device to start the search from.
+ * @drv: The device driver to look for.
+ */
+struct device *platform_find_device_by_driver(struct device *start,
+					      const struct device_driver *drv)
+{
+	return bus_find_device(&platform_bus_type, start, drv,
+			       (void *)platform_match);
+}
+EXPORT_SYMBOL_GPL(platform_find_device_by_driver);
+
 int __init platform_bus_init(void)
 {
 	int error;
diff --git a/drivers/fpga/fpga-bridge.c b/drivers/fpga/fpga-bridge.c
index 80bd8f1b2aa6..4bab9028940a 100644
--- a/drivers/fpga/fpga-bridge.c
+++ b/drivers/fpga/fpga-bridge.c
@@ -19,11 +19,6 @@ static struct class *fpga_bridge_class;
 /* Lock for adding/removing bridges to linked lists*/
 static spinlock_t bridge_list_lock;
 
-static int fpga_bridge_of_node_match(struct device *dev, const void *data)
-{
-	return dev->of_node == data;
-}
-
 /**
  * fpga_bridge_enable - Enable transactions on the bridge
  *
@@ -104,8 +99,7 @@ struct fpga_bridge *of_fpga_bridge_get(struct device_node *np,
 {
 	struct device *dev;
 
-	dev = class_find_device(fpga_bridge_class, NULL, np,
-				fpga_bridge_of_node_match);
+	dev = class_find_device_by_of_node(fpga_bridge_class, np);
 	if (!dev)
 		return ERR_PTR(-ENODEV);
 
diff --git a/drivers/fpga/fpga-mgr.c b/drivers/fpga/fpga-mgr.c
index c3866816456a..e05104f5e40c 100644
--- a/drivers/fpga/fpga-mgr.c
+++ b/drivers/fpga/fpga-mgr.c
@@ -482,11 +482,6 @@ struct fpga_manager *fpga_mgr_get(struct device *dev)
 }
 EXPORT_SYMBOL_GPL(fpga_mgr_get);
 
-static int fpga_mgr_of_node_match(struct device *dev, const void *data)
-{
-	return dev->of_node == data;
-}
-
 /**
  * of_fpga_mgr_get - Given a device node, get a reference to a fpga mgr.
  *
@@ -498,8 +493,7 @@ struct fpga_manager *of_fpga_mgr_get(struct device_node *node)
 {
 	struct device *dev;
 
-	dev = class_find_device(fpga_mgr_class, NULL, node,
-				fpga_mgr_of_node_match);
+	dev = class_find_device_by_of_node(fpga_mgr_class, node);
 	if (!dev)
 		return ERR_PTR(-ENODEV);
 
diff --git a/drivers/gpu/drm/drm_mipi_dsi.c b/drivers/gpu/drm/drm_mipi_dsi.c
index ad19df0686c9..bd2498bbd74a 100644
--- a/drivers/gpu/drm/drm_mipi_dsi.c
+++ b/drivers/gpu/drm/drm_mipi_dsi.c
@@ -93,11 +93,6 @@ static struct bus_type mipi_dsi_bus_type = {
 	.pm = &mipi_dsi_device_pm_ops,
 };
 
-static int of_device_match(struct device *dev, const void *data)
-{
-	return dev->of_node == data;
-}
-
 /**
  * of_find_mipi_dsi_device_by_node() - find the MIPI DSI device matching a
  *    device tree node
@@ -110,7 +105,7 @@ struct mipi_dsi_device *of_find_mipi_dsi_device_by_node(struct device_node *np)
 {
 	struct device *dev;
 
-	dev = bus_find_device(&mipi_dsi_bus_type, NULL, np, of_device_match);
+	dev = bus_find_device_by_of_node(&mipi_dsi_bus_type, np);
 
 	return dev ? to_mipi_dsi_device(dev) : NULL;
 }
diff --git a/drivers/gpu/drm/exynos/exynos_drm_drv.c b/drivers/gpu/drm/exynos/exynos_drm_drv.c
index 58baf49d9926..badab94be2d6 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_drv.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_drv.c
@@ -242,9 +242,7 @@ static struct component_match *exynos_drm_match_add(struct device *dev)
 		if (!info->driver || !(info->flags & DRM_COMPONENT_DRIVER))
 			continue;
 
-		while ((d = bus_find_device(&platform_bus_type, p,
-					    &info->driver->driver,
-					    (void *)platform_bus_type.match))) {
+		while ((d = platform_find_device_by_driver(p, &info->driver->driver))) {
 			put_device(p);
 
 			if (!(info->flags & DRM_FIMC_DEVICE) ||
@@ -412,9 +410,8 @@ static void exynos_drm_unregister_devices(void)
 		if (!info->driver || !(info->flags & DRM_VIRTUAL_DEVICE))
 			continue;
 
-		while ((dev = bus_find_device(&platform_bus_type, NULL,
-					    &info->driver->driver,
-					    (void *)platform_bus_type.match))) {
+		while ((dev = platform_find_device_by_driver(NULL,
+						&info->driver->driver))) {
 			put_device(dev);
 			platform_device_unregister(to_platform_device(dev));
 		}
diff --git a/drivers/gpu/drm/mcde/mcde_drv.c b/drivers/gpu/drm/mcde/mcde_drv.c
index baf63fb6850a..c07abf9e201c 100644
--- a/drivers/gpu/drm/mcde/mcde_drv.c
+++ b/drivers/gpu/drm/mcde/mcde_drv.c
@@ -477,8 +477,7 @@ static int mcde_probe(struct platform_device *pdev)
 		struct device_driver *drv = &mcde_component_drivers[i]->driver;
 		struct device *p = NULL, *d;
 
-		while ((d = bus_find_device(&platform_bus_type, p, drv,
-					    (void *)platform_bus_type.match))) {
+		while ((d = platform_find_device_by_driver(p, drv))) {
 			put_device(p);
 			component_match_add(dev, &match, mcde_compare_dev, d);
 			p = d;
diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_drv.c b/drivers/gpu/drm/rockchip/rockchip_drm_drv.c
index 53d2c5bd61dc..38dc26376961 100644
--- a/drivers/gpu/drm/rockchip/rockchip_drm_drv.c
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_drv.c
@@ -330,8 +330,7 @@ static struct component_match *rockchip_drm_match_add(struct device *dev)
 		struct device *p = NULL, *d;
 
 		do {
-			d = bus_find_device(&platform_bus_type, p, &drv->driver,
-					    (void *)platform_bus_type.match);
+			d = platform_find_device_by_driver(p, &drv->driver);
 			put_device(p);
 			p = d;
 
diff --git a/drivers/gpu/drm/vc4/vc4_drv.c b/drivers/gpu/drm/vc4/vc4_drv.c
index bf11930e40e1..1551c8253bec 100644
--- a/drivers/gpu/drm/vc4/vc4_drv.c
+++ b/drivers/gpu/drm/vc4/vc4_drv.c
@@ -237,8 +237,7 @@ static void vc4_match_add_drivers(struct device *dev,
 		struct device_driver *drv = &drivers[i]->driver;
 		struct device *p = NULL, *d;
 
-		while ((d = bus_find_device(&platform_bus_type, p, drv,
-					    (void *)platform_bus_type.match))) {
+		while ((d = platform_find_device_by_driver(p, drv))) {
 			put_device(p);
 			component_match_add(dev, match, compare_dev, d);
 			p = d;
diff --git a/drivers/hwtracing/coresight/coresight-platform.c b/drivers/hwtracing/coresight/coresight-platform.c
index dad7d96c5943..3c5bee429105 100644
--- a/drivers/hwtracing/coresight/coresight-platform.c
+++ b/drivers/hwtracing/coresight/coresight-platform.c
@@ -37,11 +37,6 @@ static int coresight_alloc_conns(struct device *dev,
 	return 0;
 }
 
-int coresight_device_fwnode_match(struct device *dev, const void *fwnode)
-{
-	return dev_fwnode(dev) == fwnode;
-}
-
 static struct device *
 coresight_find_device_by_fwnode(struct fwnode_handle *fwnode)
 {
@@ -51,8 +46,7 @@ coresight_find_device_by_fwnode(struct fwnode_handle *fwnode)
 	 * If we have a non-configurable replicator, it will be found on the
 	 * platform bus.
 	 */
-	dev = bus_find_device(&platform_bus_type, NULL,
-			      fwnode, coresight_device_fwnode_match);
+	dev = bus_find_device_by_fwnode(&platform_bus_type, fwnode);
 	if (dev)
 		return dev;
 
@@ -60,8 +54,7 @@ coresight_find_device_by_fwnode(struct fwnode_handle *fwnode)
 	 * We have a configurable component - circle through the AMBA bus
 	 * looking for the device that matches the endpoint node.
 	 */
-	return bus_find_device(&amba_bustype, NULL,
-			       fwnode, coresight_device_fwnode_match);
+	return bus_find_device_by_fwnode(&amba_bustype, fwnode);
 }
 
 #ifdef CONFIG_OF
diff --git a/drivers/hwtracing/coresight/coresight-priv.h b/drivers/hwtracing/coresight/coresight-priv.h
index 7d401790dd7e..61d7f9ff054d 100644
--- a/drivers/hwtracing/coresight/coresight-priv.h
+++ b/drivers/hwtracing/coresight/coresight-priv.h
@@ -202,6 +202,4 @@ static inline void *coresight_get_uci_data(const struct amba_id *id)
 
 void coresight_release_platform_data(struct coresight_platform_data *pdata);
 
-int coresight_device_fwnode_match(struct device *dev, const void *fwnode);
-
 #endif
diff --git a/drivers/hwtracing/coresight/coresight.c b/drivers/hwtracing/coresight/coresight.c
index 55db77f6410b..6453c67a4d01 100644
--- a/drivers/hwtracing/coresight/coresight.c
+++ b/drivers/hwtracing/coresight/coresight.c
@@ -1046,9 +1046,7 @@ static void coresight_fixup_device_conns(struct coresight_device *csdev)
 		struct coresight_connection *conn = &csdev->pdata->conns[i];
 		struct device *dev = NULL;
 
-		dev = bus_find_device(&coresight_bustype, NULL,
-				      (void *)conn->child_fwnode,
-				      coresight_device_fwnode_match);
+		dev = bus_find_device_by_fwnode(&coresight_bustype, conn->child_fwnode);
 		if (dev) {
 			conn->child_dev = to_coresight_device(dev);
 			/* and put reference from 'bus_find_device()' */
diff --git a/drivers/hwtracing/intel_th/core.c b/drivers/hwtracing/intel_th/core.c
index 55922896d862..d5c1821b31c6 100644
--- a/drivers/hwtracing/intel_th/core.c
+++ b/drivers/hwtracing/intel_th/core.c
@@ -789,12 +789,6 @@ static int intel_th_populate(struct intel_th *th)
 	return 0;
 }
 
-static int match_devt(struct device *dev, const void *data)
-{
-	dev_t devt = (dev_t)(unsigned long)(void *)data;
-	return dev->devt == devt;
-}
-
 static int intel_th_output_open(struct inode *inode, struct file *file)
 {
 	const struct file_operations *fops;
@@ -802,9 +796,7 @@ static int intel_th_output_open(struct inode *inode, struct file *file)
 	struct device *dev;
 	int err;
 
-	dev = bus_find_device(&intel_th_bus, NULL,
-			      (void *)(unsigned long)inode->i_rdev,
-			      match_devt);
+	dev = bus_find_device_by_devt(&intel_th_bus, inode->i_rdev);
 	if (!dev || !dev->driver)
 		return -ENODEV;
 
diff --git a/drivers/hwtracing/stm/core.c b/drivers/hwtracing/stm/core.c
index 181e7ff1ec4f..603b83ac5085 100644
--- a/drivers/hwtracing/stm/core.c
+++ b/drivers/hwtracing/stm/core.c
@@ -89,13 +89,6 @@ static struct class stm_class = {
 	.dev_groups	= stm_groups,
 };
 
-static int stm_dev_match(struct device *dev, const void *data)
-{
-	const char *name = data;
-
-	return sysfs_streq(name, dev_name(dev));
-}
-
 /**
  * stm_find_device() - find stm device by name
  * @buf:	character buffer containing the name
@@ -116,7 +109,7 @@ struct stm_device *stm_find_device(const char *buf)
 	if (!stm_core_up)
 		return NULL;
 
-	dev = class_find_device(&stm_class, NULL, buf, stm_dev_match);
+	dev = class_find_device_by_name(&stm_class, buf);
 	if (!dev)
 		return NULL;
 
diff --git a/drivers/i2c/busses/i2c-amd-mp2-pci.c b/drivers/i2c/busses/i2c-amd-mp2-pci.c
index c7fe3b44a860..5e4800d72e00 100644
--- a/drivers/i2c/busses/i2c-amd-mp2-pci.c
+++ b/drivers/i2c/busses/i2c-amd-mp2-pci.c
@@ -457,18 +457,12 @@ static struct pci_driver amd_mp2_pci_driver = {
 };
 module_pci_driver(amd_mp2_pci_driver);
 
-static int amd_mp2_device_match(struct device *dev, const void *data)
-{
-	return 1;
-}
-
 struct amd_mp2_dev *amd_mp2_find_device(void)
 {
 	struct device *dev;
 	struct pci_dev *pci_dev;
 
-	dev = driver_find_device(&amd_mp2_pci_driver.driver, NULL, NULL,
-				 amd_mp2_device_match);
+	dev = driver_find_next_device(&amd_mp2_pci_driver.driver, NULL);
 	if (!dev)
 		return NULL;
 
diff --git a/drivers/i2c/i2c-core-acpi.c b/drivers/i2c/i2c-core-acpi.c
index 4dbbc9a35f65..bb6b39fe343a 100644
--- a/drivers/i2c/i2c-core-acpi.c
+++ b/drivers/i2c/i2c-core-acpi.c
@@ -344,27 +344,10 @@ u32 i2c_acpi_find_bus_speed(struct device *dev)
 }
 EXPORT_SYMBOL_GPL(i2c_acpi_find_bus_speed);
 
-static int i2c_acpi_find_match_adapter(struct device *dev, const void *data)
-{
-	struct i2c_adapter *adapter = i2c_verify_adapter(dev);
-
-	if (!adapter)
-		return 0;
-
-	return ACPI_HANDLE(dev) == (acpi_handle)data;
-}
-
-static int i2c_acpi_find_match_device(struct device *dev, const void *data)
-{
-	return ACPI_COMPANION(dev) == data;
-}
-
 struct i2c_adapter *i2c_acpi_find_adapter_by_handle(acpi_handle handle)
 {
-	struct device *dev;
+	struct device *dev = bus_find_device_by_acpi_dev(&i2c_bus_type, handle);
 
-	dev = bus_find_device(&i2c_bus_type, NULL, handle,
-			      i2c_acpi_find_match_adapter);
 	return dev ? i2c_verify_adapter(dev) : NULL;
 }
 EXPORT_SYMBOL_GPL(i2c_acpi_find_adapter_by_handle);
@@ -373,8 +356,7 @@ static struct i2c_client *i2c_acpi_find_client_by_adev(struct acpi_device *adev)
 {
 	struct device *dev;
 
-	dev = bus_find_device(&i2c_bus_type, NULL, adev,
-			      i2c_acpi_find_match_device);
+	dev = bus_find_device_by_acpi_dev(&i2c_bus_type, adev);
 	return dev ? i2c_verify_client(dev) : NULL;
 }
 
diff --git a/drivers/i2c/i2c-core-of.c b/drivers/i2c/i2c-core-of.c
index d1c48dec7118..6f632d543fcc 100644
--- a/drivers/i2c/i2c-core-of.c
+++ b/drivers/i2c/i2c-core-of.c
@@ -113,11 +113,6 @@ void of_i2c_register_devices(struct i2c_adapter *adap)
 	of_node_put(bus);
 }
 
-static int of_dev_node_match(struct device *dev, const void *data)
-{
-	return dev->of_node == data;
-}
-
 static int of_dev_or_parent_node_match(struct device *dev, const void *data)
 {
 	if (dev->of_node == data)
@@ -135,7 +130,7 @@ struct i2c_client *of_find_i2c_device_by_node(struct device_node *node)
 	struct device *dev;
 	struct i2c_client *client;
 
-	dev = bus_find_device(&i2c_bus_type, NULL, node, of_dev_node_match);
+	dev = bus_find_device_by_of_node(&i2c_bus_type, node);
 	if (!dev)
 		return NULL;
 
diff --git a/drivers/infiniband/hw/hns/hns_roce_hw_v1.c b/drivers/infiniband/hw/hns/hns_roce_hw_v1.c
index c07e387a07a3..141205e76314 100644
--- a/drivers/infiniband/hw/hns/hns_roce_hw_v1.c
+++ b/drivers/infiniband/hw/hns/hns_roce_hw_v1.c
@@ -4501,19 +4501,13 @@ static const struct acpi_device_id hns_roce_acpi_match[] = {
 };
 MODULE_DEVICE_TABLE(acpi, hns_roce_acpi_match);
 
-static int hns_roce_node_match(struct device *dev, const void *fwnode)
-{
-	return dev->fwnode == fwnode;
-}
-
 static struct
 platform_device *hns_roce_find_pdev(struct fwnode_handle *fwnode)
 {
 	struct device *dev;
 
 	/* get the 'device' corresponding to the matching 'fwnode' */
-	dev = bus_find_device(&platform_bus_type, NULL,
-			      fwnode, hns_roce_node_match);
+	dev = bus_find_device_by_fwnode(&platform_bus_type, fwnode);
 	/* get the platform device */
 	return dev ? to_platform_device(dev) : NULL;
 }
diff --git a/drivers/iommu/arm-smmu-v3.c b/drivers/iommu/arm-smmu-v3.c
index 4aa414843557..8da93e730d6f 100644
--- a/drivers/iommu/arm-smmu-v3.c
+++ b/drivers/iommu/arm-smmu-v3.c
@@ -2503,16 +2503,11 @@ arm_smmu_iova_to_phys(struct iommu_domain *domain, dma_addr_t iova)
 
 static struct platform_driver arm_smmu_driver;
 
-static int arm_smmu_match_node(struct device *dev, const void *data)
-{
-	return dev->fwnode == data;
-}
-
 static
 struct arm_smmu_device *arm_smmu_get_by_fwnode(struct fwnode_handle *fwnode)
 {
-	struct device *dev = driver_find_device(&arm_smmu_driver.driver, NULL,
-						fwnode, arm_smmu_match_node);
+	struct device *dev = driver_find_device_by_fwnode(&arm_smmu_driver.driver,
+							  fwnode);
 	put_device(dev);
 	return dev ? dev_get_drvdata(dev) : NULL;
 }
diff --git a/drivers/iommu/arm-smmu.c b/drivers/iommu/arm-smmu.c
index 5b93c79371e9..c3ef0cc8f764 100644
--- a/drivers/iommu/arm-smmu.c
+++ b/drivers/iommu/arm-smmu.c
@@ -1299,16 +1299,11 @@ static bool arm_smmu_capable(enum iommu_cap cap)
 	}
 }
 
-static int arm_smmu_match_node(struct device *dev, const void *data)
-{
-	return dev->fwnode == data;
-}
-
 static
 struct arm_smmu_device *arm_smmu_get_by_fwnode(struct fwnode_handle *fwnode)
 {
-	struct device *dev = driver_find_device(&arm_smmu_driver.driver, NULL,
-						fwnode, arm_smmu_match_node);
+	struct device *dev = driver_find_device_by_fwnode(&arm_smmu_driver.driver,
+							  fwnode);
 	put_device(dev);
 	return dev ? dev_get_drvdata(dev) : NULL;
 }
diff --git a/drivers/leds/Kconfig b/drivers/leds/Kconfig
index b0fdeef10bd9..1988de1d64c0 100644
--- a/drivers/leds/Kconfig
+++ b/drivers/leds/Kconfig
@@ -74,9 +74,12 @@ config LEDS_APU
 	depends on LEDS_CLASS
 	depends on X86 && DMI
 	help
-	  This driver makes the PC Engines APU/APU2/APU3 front panel LEDs
+	  This driver makes the PC Engines APU1 front panel LEDs
 	  accessible from userspace programs through the LED subsystem.
 
+	  If you're looking for APU2/3, use the pcengines-apu2 driver.
+	  (symbol CONFIG_PCENGINES_APU2)
+
 	  To compile this driver as a module, choose M here: the
 	  module will be called leds-apu.
 
@@ -587,6 +590,7 @@ config LEDS_NETXBIG
 	tristate "LED support for Big Network series LEDs"
 	depends on LEDS_CLASS
 	depends on MACH_KIRKWOOD
+	depends on OF_GPIO
 	default y
 	help
 	  This option enables support for LEDs found on the LaCie 2Big
diff --git a/drivers/leds/led-class-flash.c b/drivers/leds/led-class-flash.c
index 94980c654d89..60c3de5c6b9f 100644
--- a/drivers/leds/led-class-flash.c
+++ b/drivers/leds/led-class-flash.c
@@ -282,8 +282,9 @@ static void led_flash_init_sysfs_groups(struct led_classdev_flash *fled_cdev)
 	led_cdev->groups = flash_groups;
 }
 
-int led_classdev_flash_register(struct device *parent,
-				struct led_classdev_flash *fled_cdev)
+int led_classdev_flash_register_ext(struct device *parent,
+				    struct led_classdev_flash *fled_cdev,
+				    struct led_init_data *init_data)
 {
 	struct led_classdev *led_cdev;
 	const struct led_flash_ops *ops;
@@ -309,13 +310,13 @@ int led_classdev_flash_register(struct device *parent,
 	}
 
 	/* Register led class device */
-	ret = led_classdev_register(parent, led_cdev);
+	ret = led_classdev_register_ext(parent, led_cdev, init_data);
 	if (ret < 0)
 		return ret;
 
 	return 0;
 }
-EXPORT_SYMBOL_GPL(led_classdev_flash_register);
+EXPORT_SYMBOL_GPL(led_classdev_flash_register_ext);
 
 void led_classdev_flash_unregister(struct led_classdev_flash *fled_cdev)
 {
diff --git a/drivers/leds/led-class.c b/drivers/leds/led-class.c
index 4793e77808e2..647b1263c579 100644
--- a/drivers/leds/led-class.c
+++ b/drivers/leds/led-class.c
@@ -14,6 +14,7 @@
 #include <linux/leds.h>
 #include <linux/list.h>
 #include <linux/module.h>
+#include <linux/property.h>
 #include <linux/slab.h>
 #include <linux/spinlock.h>
 #include <linux/timer.h>
@@ -213,13 +214,6 @@ static int led_resume(struct device *dev)
 
 static SIMPLE_DEV_PM_OPS(leds_class_dev_pm_ops, led_suspend, led_resume);
 
-static int match_name(struct device *dev, const void *data)
-{
-	if (!dev_name(dev))
-		return 0;
-	return !strcmp(dev_name(dev), (char *)data);
-}
-
 static int led_classdev_next_name(const char *init_name, char *name,
 				  size_t len)
 {
@@ -230,7 +224,7 @@ static int led_classdev_next_name(const char *init_name, char *name,
 	strlcpy(name, init_name, len);
 
 	while ((ret < len) &&
-	       (dev = class_find_device(leds_class, NULL, name, match_name))) {
+	       (dev = class_find_device_by_name(leds_class, name))) {
 		put_device(dev);
 		ret = snprintf(name, len, "%s_%u", init_name, ++i);
 	}
@@ -242,31 +236,48 @@ static int led_classdev_next_name(const char *init_name, char *name,
 }
 
 /**
- * of_led_classdev_register - register a new object of led_classdev class.
+ * led_classdev_register_ext - register a new object of led_classdev class
+ *			       with init data.
  *
  * @parent: parent of LED device
  * @led_cdev: the led_classdev structure for this device.
- * @np: DT node describing this LED
+ * @init_data: LED class device initialization data
  */
-int of_led_classdev_register(struct device *parent, struct device_node *np,
-			    struct led_classdev *led_cdev)
+int led_classdev_register_ext(struct device *parent,
+			      struct led_classdev *led_cdev,
+			      struct led_init_data *init_data)
 {
-	char name[LED_MAX_NAME_SIZE];
+	char composed_name[LED_MAX_NAME_SIZE];
+	char final_name[LED_MAX_NAME_SIZE];
+	const char *proposed_name = composed_name;
 	int ret;
 
-	ret = led_classdev_next_name(led_cdev->name, name, sizeof(name));
+	if (init_data) {
+		if (init_data->devname_mandatory && !init_data->devicename) {
+			dev_err(parent, "Mandatory device name is missing");
+			return -EINVAL;
+		}
+		ret = led_compose_name(parent, init_data, composed_name);
+		if (ret < 0)
+			return ret;
+	} else {
+		proposed_name = led_cdev->name;
+	}
+
+	ret = led_classdev_next_name(proposed_name, final_name, sizeof(final_name));
 	if (ret < 0)
 		return ret;
 
 	mutex_init(&led_cdev->led_access);
 	mutex_lock(&led_cdev->led_access);
 	led_cdev->dev = device_create_with_groups(leds_class, parent, 0,
-				led_cdev, led_cdev->groups, "%s", name);
+				led_cdev, led_cdev->groups, "%s", final_name);
 	if (IS_ERR(led_cdev->dev)) {
 		mutex_unlock(&led_cdev->led_access);
 		return PTR_ERR(led_cdev->dev);
 	}
-	led_cdev->dev->of_node = np;
+	if (init_data && init_data->fwnode)
+		led_cdev->dev->fwnode = init_data->fwnode;
 
 	if (ret)
 		dev_warn(parent, "Led %s renamed to %s due to name collision",
@@ -276,6 +287,7 @@ int of_led_classdev_register(struct device *parent, struct device_node *np,
 		ret = led_add_brightness_hw_changed(led_cdev);
 		if (ret) {
 			device_unregister(led_cdev->dev);
+			led_cdev->dev = NULL;
 			mutex_unlock(&led_cdev->led_access);
 			return ret;
 		}
@@ -311,7 +323,7 @@ int of_led_classdev_register(struct device *parent, struct device_node *np,
 
 	return 0;
 }
-EXPORT_SYMBOL_GPL(of_led_classdev_register);
+EXPORT_SYMBOL_GPL(led_classdev_register_ext);
 
 /**
  * led_classdev_unregister - unregisters a object of led_properties class.
@@ -321,6 +333,9 @@ EXPORT_SYMBOL_GPL(of_led_classdev_register);
  */
 void led_classdev_unregister(struct led_classdev *led_cdev)
 {
+	if (IS_ERR_OR_NULL(led_cdev->dev))
+		return;
+
 #ifdef CONFIG_LEDS_TRIGGERS
 	down_write(&led_cdev->trigger_lock);
 	if (led_cdev->trigger)
@@ -356,14 +371,15 @@ static void devm_led_classdev_release(struct device *dev, void *res)
 }
 
 /**
- * devm_of_led_classdev_register - resource managed led_classdev_register()
+ * devm_led_classdev_register_ext - resource managed led_classdev_register_ext()
  *
  * @parent: parent of LED device
  * @led_cdev: the led_classdev structure for this device.
+ * @init_data: LED class device initialization data
  */
-int devm_of_led_classdev_register(struct device *parent,
-				  struct device_node *np,
-				  struct led_classdev *led_cdev)
+int devm_led_classdev_register_ext(struct device *parent,
+				   struct led_classdev *led_cdev,
+				   struct led_init_data *init_data)
 {
 	struct led_classdev **dr;
 	int rc;
@@ -372,7 +388,7 @@ int devm_of_led_classdev_register(struct device *parent,
 	if (!dr)
 		return -ENOMEM;
 
-	rc = of_led_classdev_register(parent, np, led_cdev);
+	rc = led_classdev_register_ext(parent, led_cdev, init_data);
 	if (rc) {
 		devres_free(dr);
 		return rc;
@@ -383,7 +399,7 @@ int devm_of_led_classdev_register(struct device *parent,
 
 	return 0;
 }
-EXPORT_SYMBOL_GPL(devm_of_led_classdev_register);
+EXPORT_SYMBOL_GPL(devm_led_classdev_register_ext);
 
 static int devm_led_classdev_match(struct device *dev, void *res, void *data)
 {
diff --git a/drivers/leds/led-core.c b/drivers/leds/led-core.c
index 7107cd7e87cf..f1f718dbe0f8 100644
--- a/drivers/leds/led-core.c
+++ b/drivers/leds/led-core.c
@@ -13,8 +13,10 @@
 #include <linux/module.h>
 #include <linux/mutex.h>
 #include <linux/of.h>
+#include <linux/property.h>
 #include <linux/rwsem.h>
 #include <linux/slab.h>
+#include <uapi/linux/uleds.h>
 #include "leds.h"
 
 DECLARE_RWSEM(leds_list_lock);
@@ -23,6 +25,18 @@ EXPORT_SYMBOL_GPL(leds_list_lock);
 LIST_HEAD(leds_list);
 EXPORT_SYMBOL_GPL(leds_list);
 
+const char * const led_colors[LED_COLOR_ID_MAX] = {
+	[LED_COLOR_ID_WHITE] = "white",
+	[LED_COLOR_ID_RED] = "red",
+	[LED_COLOR_ID_GREEN] = "green",
+	[LED_COLOR_ID_BLUE] = "blue",
+	[LED_COLOR_ID_AMBER] = "amber",
+	[LED_COLOR_ID_VIOLET] = "violet",
+	[LED_COLOR_ID_YELLOW] = "yellow",
+	[LED_COLOR_ID_IR] = "ir",
+};
+EXPORT_SYMBOL_GPL(led_colors);
+
 static int __led_set_brightness(struct led_classdev *led_cdev,
 				enum led_brightness value)
 {
@@ -310,14 +324,11 @@ EXPORT_SYMBOL_GPL(led_update_brightness);
 
 u32 *led_get_default_pattern(struct led_classdev *led_cdev, unsigned int *size)
 {
-	struct device_node *np = dev_of_node(led_cdev->dev);
+	struct fwnode_handle *fwnode = led_cdev->dev->fwnode;
 	u32 *pattern;
 	int count;
 
-	if (!np)
-		return NULL;
-
-	count = of_property_count_u32_elems(np, "led-pattern");
+	count = fwnode_property_count_u32(fwnode, "led-pattern");
 	if (count < 0)
 		return NULL;
 
@@ -325,7 +336,7 @@ u32 *led_get_default_pattern(struct led_classdev *led_cdev, unsigned int *size)
 	if (!pattern)
 		return NULL;
 
-	if (of_property_read_u32_array(np, "led-pattern", pattern, count)) {
+	if (fwnode_property_read_u32_array(fwnode, "led-pattern", pattern, count)) {
 		kfree(pattern);
 		return NULL;
 	}
@@ -353,3 +364,116 @@ void led_sysfs_enable(struct led_classdev *led_cdev)
 	led_cdev->flags &= ~LED_SYSFS_DISABLE;
 }
 EXPORT_SYMBOL_GPL(led_sysfs_enable);
+
+static void led_parse_fwnode_props(struct device *dev,
+				   struct fwnode_handle *fwnode,
+				   struct led_properties *props)
+{
+	int ret;
+
+	if (!fwnode)
+		return;
+
+	if (fwnode_property_present(fwnode, "label")) {
+		ret = fwnode_property_read_string(fwnode, "label", &props->label);
+		if (ret)
+			dev_err(dev, "Error parsing 'label' property (%d)\n", ret);
+		return;
+	}
+
+	if (fwnode_property_present(fwnode, "color")) {
+		ret = fwnode_property_read_u32(fwnode, "color", &props->color);
+		if (ret)
+			dev_err(dev, "Error parsing 'color' property (%d)\n", ret);
+		else if (props->color >= LED_COLOR_ID_MAX)
+			dev_err(dev, "LED color identifier out of range\n");
+		else
+			props->color_present = true;
+	}
+
+
+	if (!fwnode_property_present(fwnode, "function"))
+		return;
+
+	ret = fwnode_property_read_string(fwnode, "function", &props->function);
+	if (ret) {
+		dev_err(dev,
+			"Error parsing 'function' property (%d)\n",
+			ret);
+	}
+
+	if (!fwnode_property_present(fwnode, "function-enumerator"))
+		return;
+
+	ret = fwnode_property_read_u32(fwnode, "function-enumerator",
+				       &props->func_enum);
+	if (ret) {
+		dev_err(dev,
+			"Error parsing 'function-enumerator' property (%d)\n",
+			ret);
+	} else {
+		props->func_enum_present = true;
+	}
+}
+
+int led_compose_name(struct device *dev, struct led_init_data *init_data,
+		     char *led_classdev_name)
+{
+	struct led_properties props = {};
+	struct fwnode_handle *fwnode = init_data->fwnode;
+	const char *devicename = init_data->devicename;
+
+	if (!led_classdev_name)
+		return -EINVAL;
+
+	led_parse_fwnode_props(dev, fwnode, &props);
+
+	if (props.label) {
+		/*
+		 * If init_data.devicename is NULL, then it indicates that
+		 * DT label should be used as-is for LED class device name.
+		 * Otherwise the label is prepended with devicename to compose
+		 * the final LED class device name.
+		 */
+		if (!devicename) {
+			strscpy(led_classdev_name, props.label,
+				LED_MAX_NAME_SIZE);
+		} else {
+			snprintf(led_classdev_name, LED_MAX_NAME_SIZE, "%s:%s",
+				 devicename, props.label);
+		}
+	} else if (props.function || props.color_present) {
+		char tmp_buf[LED_MAX_NAME_SIZE];
+
+		if (props.func_enum_present) {
+			snprintf(tmp_buf, LED_MAX_NAME_SIZE, "%s:%s-%d",
+				 props.color_present ? led_colors[props.color] : "",
+				 props.function ?: "", props.func_enum);
+		} else {
+			snprintf(tmp_buf, LED_MAX_NAME_SIZE, "%s:%s",
+				 props.color_present ? led_colors[props.color] : "",
+				 props.function ?: "");
+		}
+		if (init_data->devname_mandatory) {
+			snprintf(led_classdev_name, LED_MAX_NAME_SIZE, "%s:%s",
+				 devicename, tmp_buf);
+		} else {
+			strscpy(led_classdev_name, tmp_buf, LED_MAX_NAME_SIZE);
+
+		}
+	} else if (init_data->default_label) {
+		if (!devicename) {
+			dev_err(dev, "Legacy LED naming requires devicename segment");
+			return -EINVAL;
+		}
+		snprintf(led_classdev_name, LED_MAX_NAME_SIZE, "%s:%s",
+			 devicename, init_data->default_label);
+	} else if (is_of_node(fwnode)) {
+		strscpy(led_classdev_name, to_of_node(fwnode)->name,
+			LED_MAX_NAME_SIZE);
+	} else
+		return -EINVAL;
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(led_compose_name);
diff --git a/drivers/leds/led-triggers.c b/drivers/leds/led-triggers.c
index 8d11a5e23227..23963e5cb5d6 100644
--- a/drivers/leds/led-triggers.c
+++ b/drivers/leds/led-triggers.c
@@ -167,12 +167,13 @@ err_add_groups:
 		trig->deactivate(led_cdev);
 err_activate:
 
-	led_cdev->trigger = NULL;
-	led_cdev->trigger_data = NULL;
 	write_lock_irqsave(&led_cdev->trigger->leddev_list_lock, flags);
 	list_del(&led_cdev->trig_list);
 	write_unlock_irqrestore(&led_cdev->trigger->leddev_list_lock, flags);
+	led_cdev->trigger = NULL;
+	led_cdev->trigger_data = NULL;
 	led_set_brightness(led_cdev, LED_OFF);
+	kfree(event);
 
 	return ret;
 }
diff --git a/drivers/leds/leds-aat1290.c b/drivers/leds/leds-aat1290.c
index bf26f5bed1f0..5a0fe7b7b8bc 100644
--- a/drivers/leds/leds-aat1290.c
+++ b/drivers/leds/leds-aat1290.c
@@ -42,6 +42,8 @@
 #define AAT1290_FLASH_TM_NUM_LEVELS	16
 #define AAT1290_MM_CURRENT_SCALE_SIZE	15
 
+#define AAT1290_NAME			"aat1290"
+
 
 struct aat1290_led_config_data {
 	/* maximum LED current in movie mode */
@@ -75,7 +77,6 @@ struct aat1290_led {
 	int *mm_current_scale;
 	/* device mode */
 	bool movie_mode;
-
 	/* brightness cache */
 	unsigned int torch_brightness;
 };
@@ -215,7 +216,6 @@ static int aat1290_led_parse_dt(struct aat1290_led *led,
 			struct aat1290_led_config_data *cfg,
 			struct device_node **sub_node)
 {
-	struct led_classdev *led_cdev = &led->fled_cdev.led_cdev;
 	struct device *dev = &led->pdev->dev;
 	struct device_node *child_node;
 #if IS_ENABLED(CONFIG_V4L2_FLASH_LED_CLASS)
@@ -254,9 +254,6 @@ static int aat1290_led_parse_dt(struct aat1290_led *led,
 		return -EINVAL;
 	}
 
-	led_cdev->name = of_get_property(child_node, "label", NULL) ? :
-						child_node->name;
-
 	ret = of_property_read_u32(child_node, "led-max-microamp",
 				&cfg->max_mm_current);
 	/*
@@ -428,7 +425,7 @@ static void aat1290_init_v4l2_flash_config(struct aat1290_led *led,
 	struct led_classdev *led_cdev = &led->fled_cdev.led_cdev;
 	struct led_flash_setting *s;
 
-	strlcpy(v4l2_sd_cfg->dev_name, led_cdev->name,
+	strlcpy(v4l2_sd_cfg->dev_name, led_cdev->dev->kobj.name,
 		sizeof(v4l2_sd_cfg->dev_name));
 
 	s = &v4l2_sd_cfg->intensity;
@@ -466,6 +463,7 @@ static int aat1290_led_probe(struct platform_device *pdev)
 	struct aat1290_led *led;
 	struct led_classdev *led_cdev;
 	struct led_classdev_flash *fled_cdev;
+	struct led_init_data init_data = {};
 	struct aat1290_led_config_data led_cfg = {};
 	struct v4l2_flash_config v4l2_sd_cfg = {};
 	int ret;
@@ -494,8 +492,12 @@ static int aat1290_led_probe(struct platform_device *pdev)
 
 	aat1290_init_flash_timeout(led, &led_cfg);
 
+	init_data.fwnode = of_fwnode_handle(sub_node);
+	init_data.devicename = AAT1290_NAME;
+
 	/* Register LED Flash class device */
-	ret = led_classdev_flash_register(&pdev->dev, fled_cdev);
+	ret = led_classdev_flash_register_ext(&pdev->dev, fled_cdev,
+					      &init_data);
 	if (ret < 0)
 		goto err_flash_register;
 
diff --git a/drivers/leds/leds-an30259a.c b/drivers/leds/leds-an30259a.c
index 1c1f0c8c56f4..250dc9d6f635 100644
--- a/drivers/leds/leds-an30259a.c
+++ b/drivers/leds/leds-an30259a.c
@@ -13,7 +13,6 @@
 #include <linux/mutex.h>
 #include <linux/of.h>
 #include <linux/regmap.h>
-#include <uapi/linux/uleds.h>
 
 #define AN30259A_MAX_LEDS 3
 
@@ -54,6 +53,8 @@
 #define AN30259A_BLINK_MAX_TIME 7500 /* ms */
 #define AN30259A_SLOPE_RESOLUTION 500 /* ms */
 
+#define AN30259A_NAME "an30259a"
+
 #define STATE_OFF 0
 #define STATE_KEEP 1
 #define STATE_ON 2
@@ -62,11 +63,11 @@ struct an30259a;
 
 struct an30259a_led {
 	struct an30259a *chip;
+	struct fwnode_handle *fwnode;
 	struct led_classdev cdev;
 	u32 num;
 	u32 default_state;
 	bool sloping;
-	char label[LED_MAX_NAME_SIZE];
 };
 
 struct an30259a {
@@ -226,14 +227,7 @@ static int an30259a_dt_init(struct i2c_client *client,
 
 		led->num = source;
 		led->chip = chip;
-
-		if (of_property_read_string(child, "label", &str))
-			snprintf(led->label, sizeof(led->label), "an30259a::");
-		else
-			snprintf(led->label, sizeof(led->label), "an30259a:%s",
-				 str);
-
-		led->cdev.name = led->label;
+		led->fwnode = of_fwnode_handle(child);
 
 		if (!of_property_read_string(child, "default-state", &str)) {
 			if (!strcmp(str, "on"))
@@ -312,13 +306,20 @@ static int an30259a_probe(struct i2c_client *client)
 	chip->regmap = devm_regmap_init_i2c(client, &an30259a_regmap_config);
 
 	for (i = 0; i < chip->num_leds; i++) {
+		struct led_init_data init_data = {};
+
 		an30259a_init_default_state(&chip->leds[i]);
 		chip->leds[i].cdev.brightness_set_blocking =
 			an30259a_brightness_set;
 		chip->leds[i].cdev.blink_set = an30259a_blink_set;
 
-		err = devm_led_classdev_register(&client->dev,
-						 &chip->leds[i].cdev);
+		init_data.fwnode = chip->leds[i].fwnode;
+		init_data.devicename = AN30259A_NAME;
+		init_data.default_label = ":";
+
+		err = devm_led_classdev_register_ext(&client->dev,
+						 &chip->leds[i].cdev,
+						 &init_data);
 		if (err < 0)
 			goto exit;
 	}
@@ -353,7 +354,7 @@ MODULE_DEVICE_TABLE(i2c, an30259a_id);
 
 static struct i2c_driver an30259a_driver = {
 	.driver = {
-		.name = "leds-an32059a",
+		.name = "leds-an30259a",
 		.of_match_table = of_match_ptr(an30259a_match_table),
 	},
 	.probe_new = an30259a_probe,
@@ -364,5 +365,5 @@ static struct i2c_driver an30259a_driver = {
 module_i2c_driver(an30259a_driver);
 
 MODULE_AUTHOR("Simon Shields <simon@lineageos.org>");
-MODULE_DESCRIPTION("AN32059A LED driver");
+MODULE_DESCRIPTION("AN30259A LED driver");
 MODULE_LICENSE("GPL v2");
diff --git a/drivers/leds/leds-apu.c b/drivers/leds/leds-apu.c
index 8d42e46e2de3..7fd557aceff6 100644
--- a/drivers/leds/leds-apu.c
+++ b/drivers/leds/leds-apu.c
@@ -31,6 +31,8 @@
  * POSSIBILITY OF SUCH DAMAGE.
  */
 
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
 #include <linux/dmi.h>
 #include <linux/err.h>
 #include <linux/init.h>
@@ -47,12 +49,6 @@
 #define APU1_NUM_GPIO           3
 #define APU1_IOSIZE             sizeof(u8)
 
-#define APU2_FCH_ACPI_MMIO_BASE 0xFED80000
-#define APU2_FCH_GPIO_BASE      (APU2_FCH_ACPI_MMIO_BASE + 0x1500)
-#define APU2_GPIO_BIT_WRITE     22
-#define APU2_APU2_NUM_GPIO      4
-#define APU2_IOSIZE             sizeof(u32)
-
 /* LED access parameters */
 struct apu_param {
 	void __iomem *addr; /* for ioread/iowrite */
@@ -72,19 +68,9 @@ struct apu_led_profile {
 	unsigned long offset; /* for devm_ioremap */
 };
 
-/* Supported platform types */
-enum apu_led_platform_types {
-	APU1_LED_PLATFORM,
-	APU2_LED_PLATFORM,
-};
-
 struct apu_led_pdata {
 	struct platform_device *pdev;
 	struct apu_led_priv *pled;
-	const struct apu_led_profile *profile;
-	enum apu_led_platform_types platform;
-	int num_led_instances;
-	int iosize; /* for devm_ioremap() */
 	spinlock_t lock;
 };
 
@@ -96,19 +82,6 @@ static const struct apu_led_profile apu1_led_profile[] = {
 	{ "apu:green:3", LED_OFF, APU1_FCH_GPIO_BASE + 2 * APU1_IOSIZE },
 };
 
-static const struct apu_led_profile apu2_led_profile[] = {
-	{ "apu2:green:1", LED_ON,  APU2_FCH_GPIO_BASE + 68 * APU2_IOSIZE },
-	{ "apu2:green:2", LED_OFF, APU2_FCH_GPIO_BASE + 69 * APU2_IOSIZE },
-	{ "apu2:green:3", LED_OFF, APU2_FCH_GPIO_BASE + 70 * APU2_IOSIZE },
-};
-
-/* Same as apu2_led_profile, but with "3" in the LED names. */
-static const struct apu_led_profile apu3_led_profile[] = {
-	{ "apu3:green:1", LED_ON,  APU2_FCH_GPIO_BASE + 68 * APU2_IOSIZE },
-	{ "apu3:green:2", LED_OFF, APU2_FCH_GPIO_BASE + 69 * APU2_IOSIZE },
-	{ "apu3:green:3", LED_OFF, APU2_FCH_GPIO_BASE + 70 * APU2_IOSIZE },
-};
-
 static const struct dmi_system_id apu_led_dmi_table[] __initconst = {
 	{
 		.ident = "apu",
@@ -117,54 +90,6 @@ static const struct dmi_system_id apu_led_dmi_table[] __initconst = {
 			DMI_MATCH(DMI_PRODUCT_NAME, "APU")
 		}
 	},
-	/* PC Engines APU2 with "Legacy" bios < 4.0.8 */
-	{
-		.ident = "apu2",
-		.matches = {
-			DMI_MATCH(DMI_SYS_VENDOR, "PC Engines"),
-			DMI_MATCH(DMI_BOARD_NAME, "APU2")
-		}
-	},
-	/* PC Engines APU2 with "Legacy" bios >= 4.0.8 */
-	{
-		.ident = "apu2",
-		.matches = {
-			DMI_MATCH(DMI_SYS_VENDOR, "PC Engines"),
-			DMI_MATCH(DMI_BOARD_NAME, "apu2")
-		}
-	},
-	/* PC Engines APU2 with "Mainline" bios */
-	{
-		.ident = "apu2",
-		.matches = {
-			DMI_MATCH(DMI_SYS_VENDOR, "PC Engines"),
-			DMI_MATCH(DMI_BOARD_NAME, "PC Engines apu2")
-		}
-	},
-	/* PC Engines APU3 with "Legacy" bios < 4.0.8 */
-	{
-		.ident = "apu3",
-		.matches = {
-			DMI_MATCH(DMI_SYS_VENDOR, "PC Engines"),
-			DMI_MATCH(DMI_BOARD_NAME, "APU3")
-		}
-	},
-	/* PC Engines APU3 with "Legacy" bios >= 4.0.8 */
-	{
-		.ident = "apu3",
-		.matches = {
-			DMI_MATCH(DMI_SYS_VENDOR, "PC Engines"),
-			DMI_MATCH(DMI_BOARD_NAME, "apu3")
-		}
-	},
-	/* PC Engines APU2 with "Mainline" bios */
-	{
-		.ident = "apu3",
-		.matches = {
-			DMI_MATCH(DMI_SYS_VENDOR, "PC Engines"),
-			DMI_MATCH(DMI_BOARD_NAME, "PC Engines apu3")
-		}
-	},
 	{}
 };
 MODULE_DEVICE_TABLE(dmi, apu_led_dmi_table);
@@ -178,52 +103,30 @@ static void apu1_led_brightness_set(struct led_classdev *led, enum led_brightnes
 	spin_unlock(&apu_led->lock);
 }
 
-static void apu2_led_brightness_set(struct led_classdev *led, enum led_brightness value)
-{
-	struct apu_led_priv *pled = cdev_to_priv(led);
-	u32 value_new;
-
-	spin_lock(&apu_led->lock);
-
-	value_new = ioread32(pled->param.addr);
-
-	if (value)
-		value_new &= ~BIT(APU2_GPIO_BIT_WRITE);
-	else
-		value_new |= BIT(APU2_GPIO_BIT_WRITE);
-
-	iowrite32(value_new, pled->param.addr);
-
-	spin_unlock(&apu_led->lock);
-}
-
 static int apu_led_config(struct device *dev, struct apu_led_pdata *apuld)
 {
 	int i;
 	int err;
 
 	apu_led->pled = devm_kcalloc(dev,
-		apu_led->num_led_instances, sizeof(struct apu_led_priv),
+		ARRAY_SIZE(apu1_led_profile), sizeof(struct apu_led_priv),
 		GFP_KERNEL);
 
 	if (!apu_led->pled)
 		return -ENOMEM;
 
-	for (i = 0; i < apu_led->num_led_instances; i++) {
+	for (i = 0; i < ARRAY_SIZE(apu1_led_profile); i++) {
 		struct apu_led_priv *pled = &apu_led->pled[i];
 		struct led_classdev *led_cdev = &pled->cdev;
 
-		led_cdev->name = apu_led->profile[i].name;
-		led_cdev->brightness = apu_led->profile[i].brightness;
+		led_cdev->name = apu1_led_profile[i].name;
+		led_cdev->brightness = apu1_led_profile[i].brightness;
 		led_cdev->max_brightness = 1;
 		led_cdev->flags = LED_CORE_SUSPENDRESUME;
-		if (apu_led->platform == APU1_LED_PLATFORM)
-			led_cdev->brightness_set = apu1_led_brightness_set;
-		else if (apu_led->platform == APU2_LED_PLATFORM)
-			led_cdev->brightness_set = apu2_led_brightness_set;
+		led_cdev->brightness_set = apu1_led_brightness_set;
 
 		pled->param.addr = devm_ioremap(dev,
-				apu_led->profile[i].offset, apu_led->iosize);
+				apu1_led_profile[i].offset, APU1_IOSIZE);
 		if (!pled->param.addr) {
 			err = -ENOMEM;
 			goto error;
@@ -233,7 +136,7 @@ static int apu_led_config(struct device *dev, struct apu_led_pdata *apuld)
 		if (err)
 			goto error;
 
-		led_cdev->brightness_set(led_cdev, apu_led->profile[i].brightness);
+		apu1_led_brightness_set(led_cdev, apu1_led_profile[i].brightness);
 	}
 
 	return 0;
@@ -254,28 +157,6 @@ static int __init apu_led_probe(struct platform_device *pdev)
 
 	apu_led->pdev = pdev;
 
-	if (dmi_match(DMI_PRODUCT_NAME, "APU")) {
-		apu_led->profile = apu1_led_profile;
-		apu_led->platform = APU1_LED_PLATFORM;
-		apu_led->num_led_instances = ARRAY_SIZE(apu1_led_profile);
-		apu_led->iosize = APU1_IOSIZE;
-	} else if (dmi_match(DMI_BOARD_NAME, "APU2") ||
-		   dmi_match(DMI_BOARD_NAME, "apu2") ||
-		   dmi_match(DMI_BOARD_NAME, "PC Engines apu2")) {
-		apu_led->profile = apu2_led_profile;
-		apu_led->platform = APU2_LED_PLATFORM;
-		apu_led->num_led_instances = ARRAY_SIZE(apu2_led_profile);
-		apu_led->iosize = APU2_IOSIZE;
-	} else if (dmi_match(DMI_BOARD_NAME, "APU3") ||
-		   dmi_match(DMI_BOARD_NAME, "apu3") ||
-		   dmi_match(DMI_BOARD_NAME, "PC Engines apu3")) {
-		apu_led->profile = apu3_led_profile;
-		/* Otherwise identical to APU2. */
-		apu_led->platform = APU2_LED_PLATFORM;
-		apu_led->num_led_instances = ARRAY_SIZE(apu3_led_profile);
-		apu_led->iosize = APU2_IOSIZE;
-	}
-
 	spin_lock_init(&apu_led->lock);
 	return apu_led_config(&pdev->dev, apu_led);
 }
@@ -291,19 +172,9 @@ static int __init apu_led_init(void)
 	struct platform_device *pdev;
 	int err;
 
-	if (!dmi_match(DMI_SYS_VENDOR, "PC Engines")) {
-		pr_err("No PC Engines board detected\n");
-		return -ENODEV;
-	}
-	if (!(dmi_match(DMI_PRODUCT_NAME, "APU") ||
-	      dmi_match(DMI_PRODUCT_NAME, "APU2") ||
-	      dmi_match(DMI_PRODUCT_NAME, "apu2") ||
-	      dmi_match(DMI_PRODUCT_NAME, "PC Engines apu2") ||
-	      dmi_match(DMI_PRODUCT_NAME, "APU3") ||
-	      dmi_match(DMI_PRODUCT_NAME, "apu3") ||
-	      dmi_match(DMI_PRODUCT_NAME, "PC Engines apu3"))) {
-		pr_err("Unknown PC Engines board: %s\n",
-				dmi_get_system_info(DMI_PRODUCT_NAME));
+	if (!(dmi_match(DMI_SYS_VENDOR, "PC Engines") &&
+	      dmi_match(DMI_PRODUCT_NAME, "APU"))) {
+		pr_err("No PC Engines APUv1 board detected. For APUv2,3 support, enable CONFIG_PCENGINES_APU2\n");
 		return -ENODEV;
 	}
 
@@ -326,7 +197,7 @@ static void __exit apu_led_exit(void)
 {
 	int i;
 
-	for (i = 0; i < apu_led->num_led_instances; i++)
+	for (i = 0; i < ARRAY_SIZE(apu1_led_profile); i++)
 		led_classdev_unregister(&apu_led->pled[i].cdev);
 
 	platform_device_unregister(apu_led->pdev);
@@ -337,6 +208,6 @@ module_init(apu_led_init);
 module_exit(apu_led_exit);
 
 MODULE_AUTHOR("Alan Mizrahi");
-MODULE_DESCRIPTION("PC Engines APU family LED driver");
+MODULE_DESCRIPTION("PC Engines APU1 front LED driver");
 MODULE_LICENSE("GPL v2");
 MODULE_ALIAS("platform:leds_apu");
diff --git a/drivers/leds/leds-as3645a.c b/drivers/leds/leds-as3645a.c
index 14ab6b0e4de9..b7e0ae1af8fa 100644
--- a/drivers/leds/leds-as3645a.c
+++ b/drivers/leds/leds-as3645a.c
@@ -124,11 +124,6 @@ struct as3645a_config {
 	u32 peak;
 };
 
-struct as3645a_names {
-	char flash[32];
-	char indicator[32];
-};
-
 struct as3645a {
 	struct i2c_client *client;
 
@@ -484,12 +479,10 @@ static int as3645a_detect(struct as3645a *flash)
 }
 
 static int as3645a_parse_node(struct as3645a *flash,
-			      struct as3645a_names *names,
 			      struct fwnode_handle *fwnode)
 {
 	struct as3645a_config *cfg = &flash->cfg;
 	struct fwnode_handle *child;
-	const char *name;
 	int rval;
 
 	fwnode_for_each_child_node(fwnode, child) {
@@ -517,17 +510,6 @@ static int as3645a_parse_node(struct as3645a *flash,
 		return -ENODEV;
 	}
 
-	rval = fwnode_property_read_string(flash->flash_node, "label", &name);
-	if (!rval) {
-		strlcpy(names->flash, name, sizeof(names->flash));
-	} else if (is_of_node(fwnode)) {
-		snprintf(names->flash, sizeof(names->flash),
-			 "%pOFn:flash", to_of_node(fwnode));
-	} else {
-		dev_err(&flash->client->dev, "flash node has no label!\n");
-		return -EINVAL;
-	}
-
 	rval = fwnode_property_read_u32(flash->flash_node, "flash-timeout-us",
 					&cfg->flash_timeout_us);
 	if (rval < 0) {
@@ -565,17 +547,6 @@ static int as3645a_parse_node(struct as3645a *flash,
 		goto out_err;
 	}
 
-	rval = fwnode_property_read_string(flash->indicator_node, "label",
-					   &name);
-	if (!rval) {
-		strlcpy(names->indicator, name, sizeof(names->indicator));
-	} else if (is_of_node(fwnode)) {
-		snprintf(names->indicator, sizeof(names->indicator),
-			 "%pOFn:indicator", to_of_node(fwnode));
-	} else {
-		dev_err(&flash->client->dev, "indicator node has no label!\n");
-		return -EINVAL;
-	}
 
 	rval = fwnode_property_read_u32(flash->indicator_node,
 					"led-max-microamp",
@@ -595,21 +566,25 @@ out_err:
 	return rval;
 }
 
-static int as3645a_led_class_setup(struct as3645a *flash,
-				   struct as3645a_names *names)
+static int as3645a_led_class_setup(struct as3645a *flash)
 {
 	struct led_classdev *fled_cdev = &flash->fled.led_cdev;
 	struct led_classdev *iled_cdev = &flash->iled_cdev;
+	struct led_init_data init_data = {};
 	struct led_flash_setting *cfg;
 	int rval;
 
-	iled_cdev->name = names->indicator;
 	iled_cdev->brightness_set_blocking = as3645a_set_indicator_brightness;
 	iled_cdev->max_brightness =
 		flash->cfg.indicator_max_ua / AS_INDICATOR_INTENSITY_STEP;
 	iled_cdev->flags = LED_CORE_SUSPENDRESUME;
 
-	rval = led_classdev_register(&flash->client->dev, iled_cdev);
+	init_data.fwnode = flash->indicator_node;
+	init_data.devicename = AS_NAME;
+	init_data.default_label = "indicator";
+
+	rval = led_classdev_register_ext(&flash->client->dev, iled_cdev,
+					 &init_data);
 	if (rval < 0)
 		return rval;
 
@@ -627,7 +602,6 @@ static int as3645a_led_class_setup(struct as3645a *flash,
 
 	flash->fled.ops = &as3645a_led_flash_ops;
 
-	fled_cdev->name = names->flash;
 	fled_cdev->brightness_set_blocking = as3645a_set_assist_brightness;
 	/* Value 0 is off in LED class. */
 	fled_cdev->max_brightness =
@@ -635,15 +609,23 @@ static int as3645a_led_class_setup(struct as3645a *flash,
 				       flash->cfg.assist_max_ua) + 1;
 	fled_cdev->flags = LED_DEV_CAP_FLASH | LED_CORE_SUSPENDRESUME;
 
-	rval = led_classdev_flash_register(&flash->client->dev, &flash->fled);
-	if (rval) {
-		led_classdev_unregister(iled_cdev);
-		dev_err(&flash->client->dev,
-			"led_classdev_flash_register() failed, error %d\n",
-			rval);
-	}
+	init_data.fwnode = flash->flash_node;
+	init_data.devicename = AS_NAME;
+	init_data.default_label = "flash";
+
+	rval = led_classdev_flash_register_ext(&flash->client->dev,
+					       &flash->fled, &init_data);
+	if (rval)
+		goto out_err;
 
 	return rval;
+
+out_err:
+	led_classdev_unregister(iled_cdev);
+	dev_err(&flash->client->dev,
+		"led_classdev_flash_register() failed, error %d\n",
+		rval);
+	return rval;
 }
 
 static int as3645a_v4l2_setup(struct as3645a *flash)
@@ -667,8 +649,9 @@ static int as3645a_v4l2_setup(struct as3645a *flash)
 		},
 	};
 
-	strlcpy(cfg.dev_name, led->name, sizeof(cfg.dev_name));
-	strlcpy(cfgind.dev_name, flash->iled_cdev.name, sizeof(cfg.dev_name));
+	strlcpy(cfg.dev_name, led->dev->kobj.name, sizeof(cfg.dev_name));
+	strlcpy(cfgind.dev_name, flash->iled_cdev.dev->kobj.name,
+		sizeof(cfgind.dev_name));
 
 	flash->vf = v4l2_flash_init(
 		&flash->client->dev, flash->flash_node, &flash->fled, NULL,
@@ -689,7 +672,6 @@ static int as3645a_v4l2_setup(struct as3645a *flash)
 
 static int as3645a_probe(struct i2c_client *client)
 {
-	struct as3645a_names names;
 	struct as3645a *flash;
 	int rval;
 
@@ -702,7 +684,7 @@ static int as3645a_probe(struct i2c_client *client)
 
 	flash->client = client;
 
-	rval = as3645a_parse_node(flash, &names, dev_fwnode(&client->dev));
+	rval = as3645a_parse_node(flash, dev_fwnode(&client->dev));
 	if (rval < 0)
 		return rval;
 
@@ -717,7 +699,7 @@ static int as3645a_probe(struct i2c_client *client)
 	if (rval)
 		goto out_mutex_destroy;
 
-	rval = as3645a_led_class_setup(flash, &names);
+	rval = as3645a_led_class_setup(flash);
 	if (rval)
 		goto out_mutex_destroy;
 
diff --git a/drivers/leds/leds-cr0014114.c b/drivers/leds/leds-cr0014114.c
index 0e4262462cb9..2da448ae718e 100644
--- a/drivers/leds/leds-cr0014114.c
+++ b/drivers/leds/leds-cr0014114.c
@@ -8,7 +8,6 @@
 #include <linux/of_device.h>
 #include <linux/spi/spi.h>
 #include <linux/workqueue.h>
-#include <uapi/linux/uleds.h>
 
 /*
  *  CR0014114 SPI protocol descrtiption:
@@ -40,8 +39,9 @@
 #define CR_FW_DELAY_MSEC	10
 #define CR_RECOUNT_DELAY	(HZ * 3600)
 
+#define CR_DEV_NAME		"cr0014114"
+
 struct cr0014114_led {
-	char			name[LED_MAX_NAME_SIZE];
 	struct cr0014114	*priv;
 	struct led_classdev	ldev;
 	u8			brightness;
@@ -167,8 +167,7 @@ static int cr0014114_set_sync(struct led_classdev *ldev,
 						    struct cr0014114_led,
 						    ldev);
 
-	dev_dbg(led->priv->dev, "Set brightness of %s to %d\n",
-		led->name, brightness);
+	dev_dbg(led->priv->dev, "Set brightness to %d\n", brightness);
 
 	mutex_lock(&led->priv->lock);
 	led->brightness = (u8)brightness;
@@ -183,42 +182,32 @@ static int cr0014114_probe_dt(struct cr0014114 *priv)
 	size_t			i = 0;
 	struct cr0014114_led	*led;
 	struct fwnode_handle	*child;
-	struct device_node	*np;
+	struct led_init_data	init_data = {};
 	int			ret;
-	const char		*str;
 
 	device_for_each_child_node(priv->dev, child) {
-		np = to_of_node(child);
 		led = &priv->leds[i];
 
-		ret = fwnode_property_read_string(child, "label", &str);
-		if (ret)
-			snprintf(led->name, sizeof(led->name),
-				 "cr0014114::");
-		else
-			snprintf(led->name, sizeof(led->name),
-				 "cr0014114:%s", str);
-
 		fwnode_property_read_string(child, "linux,default-trigger",
 					    &led->ldev.default_trigger);
 
 		led->priv			  = priv;
-		led->ldev.name			  = led->name;
 		led->ldev.max_brightness	  = CR_MAX_BRIGHTNESS;
 		led->ldev.brightness_set_blocking = cr0014114_set_sync;
 
-		ret = devm_of_led_classdev_register(priv->dev, np,
-						    &led->ldev);
+		init_data.fwnode = child;
+		init_data.devicename = CR_DEV_NAME;
+		init_data.default_label = ":";
+
+		ret = devm_led_classdev_register_ext(priv->dev, &led->ldev,
+						     &init_data);
 		if (ret) {
 			dev_err(priv->dev,
-				"failed to register LED device %s, err %d",
-				led->name, ret);
+				"failed to register LED device, err %d", ret);
 			fwnode_handle_put(child);
 			return ret;
 		}
 
-		led->ldev.dev->of_node = np;
-
 		i++;
 	}
 
diff --git a/drivers/leds/leds-gpio.c b/drivers/leds/leds-gpio.c
index bdc98ddca1dc..a5c73f3d5f79 100644
--- a/drivers/leds/leds-gpio.c
+++ b/drivers/leds/leds-gpio.c
@@ -73,11 +73,11 @@ static int gpio_blink_set(struct led_classdev *led_cdev,
 
 static int create_gpio_led(const struct gpio_led *template,
 	struct gpio_led_data *led_dat, struct device *parent,
-	struct device_node *np, gpio_blink_set_t blink_set)
+	struct fwnode_handle *fwnode, gpio_blink_set_t blink_set)
 {
+	struct led_init_data init_data = {};
 	int ret, state;
 
-	led_dat->cdev.name = template->name;
 	led_dat->cdev.default_trigger = template->default_trigger;
 	led_dat->can_sleep = gpiod_cansleep(led_dat->gpiod);
 	if (!led_dat->can_sleep)
@@ -108,7 +108,16 @@ static int create_gpio_led(const struct gpio_led *template,
 	if (ret < 0)
 		return ret;
 
-	return devm_of_led_classdev_register(parent, np, &led_dat->cdev);
+	if (template->name) {
+		led_dat->cdev.name = template->name;
+		ret = devm_led_classdev_register(parent, &led_dat->cdev);
+	} else {
+		init_data.fwnode = fwnode;
+		ret = devm_led_classdev_register_ext(parent, &led_dat->cdev,
+						     &init_data);
+	}
+
+	return ret;
 }
 
 struct gpio_leds_priv {
@@ -141,15 +150,6 @@ static struct gpio_leds_priv *gpio_leds_create(struct platform_device *pdev)
 		struct gpio_led_data *led_dat = &priv->leds[priv->num_leds];
 		struct gpio_led led = {};
 		const char *state = NULL;
-		struct device_node *np = to_of_node(child);
-
-		ret = fwnode_property_read_string(child, "label", &led.name);
-		if (ret && IS_ENABLED(CONFIG_OF) && np)
-			led.name = np->name;
-		if (!led.name) {
-			fwnode_handle_put(child);
-			return ERR_PTR(-EINVAL);
-		}
 
 		led.gpiod = devm_fwnode_get_gpiod_from_child(dev, NULL, child,
 							     GPIOD_ASIS,
@@ -181,7 +181,7 @@ static struct gpio_leds_priv *gpio_leds_create(struct platform_device *pdev)
 		if (fwnode_property_present(child, "panic-indicator"))
 			led.panic_indicator = 1;
 
-		ret = create_gpio_led(&led, led_dat, dev, np, NULL);
+		ret = create_gpio_led(&led, led_dat, dev, child, NULL);
 		if (ret < 0) {
 			fwnode_handle_put(child);
 			return ERR_PTR(ret);
diff --git a/drivers/leds/leds-is31fl319x.c b/drivers/leds/leds-is31fl319x.c
index 2d077b8edd0e..ca6634b8683c 100644
--- a/drivers/leds/leds-is31fl319x.c
+++ b/drivers/leds/leds-is31fl319x.c
@@ -333,12 +333,11 @@ static int is31fl319x_probe(struct i2c_client *client,
 {
 	struct is31fl319x_chip *is31;
 	struct device *dev = &client->dev;
-	struct i2c_adapter *adapter = to_i2c_adapter(dev->parent);
 	int err;
 	int i = 0;
 	u32 aggregated_led_microamp = IS31FL319X_CURRENT_MAX;
 
-	if (!i2c_check_functionality(adapter, I2C_FUNC_I2C))
+	if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C))
 		return -EIO;
 
 	is31 = devm_kzalloc(&client->dev, sizeof(*is31), GFP_KERNEL);
diff --git a/drivers/leds/leds-is31fl32xx.c b/drivers/leds/leds-is31fl32xx.c
index 6fbab70dfb04..6f29b8943913 100644
--- a/drivers/leds/leds-is31fl32xx.c
+++ b/drivers/leds/leds-is31fl32xx.c
@@ -324,12 +324,6 @@ static int is31fl32xx_init_regs(struct is31fl32xx_priv *priv)
 	return 0;
 }
 
-static inline size_t sizeof_is31fl32xx_priv(int num_leds)
-{
-	return sizeof(struct is31fl32xx_priv) +
-		      (sizeof(struct is31fl32xx_led_data) * num_leds);
-}
-
 static int is31fl32xx_parse_child_dt(const struct device *dev,
 				     const struct device_node *child,
 				     struct is31fl32xx_led_data *led_data)
@@ -450,7 +444,7 @@ static int is31fl32xx_probe(struct i2c_client *client,
 	if (!count)
 		return -EINVAL;
 
-	priv = devm_kzalloc(dev, sizeof_is31fl32xx_priv(count),
+	priv = devm_kzalloc(dev, struct_size(priv, leds, count),
 			    GFP_KERNEL);
 	if (!priv)
 		return -ENOMEM;
diff --git a/drivers/leds/leds-ktd2692.c b/drivers/leds/leds-ktd2692.c
index f63918206bfb..670efee9b131 100644
--- a/drivers/leds/leds-ktd2692.c
+++ b/drivers/leds/leds-ktd2692.c
@@ -19,7 +19,7 @@
 /* Value related the movie mode */
 #define KTD2692_MOVIE_MODE_CURRENT_LEVELS	16
 #define KTD2692_MM_TO_FL_RATIO(x)		((x) / 3)
-#define KTD2962_MM_MIN_CURR_THRESHOLD_SCALE	8
+#define KTD2692_MM_MIN_CURR_THRESHOLD_SCALE	8
 
 /* Value related the flash mode */
 #define KTD2692_FLASH_MODE_TIMEOUT_LEVELS	8
@@ -250,7 +250,7 @@ static void ktd2692_setup(struct ktd2692_context *led)
 	ktd2692_expresswire_reset(led);
 	gpiod_direction_output(led->aux_gpio, KTD2692_LOW);
 
-	ktd2692_expresswire_write(led, (KTD2962_MM_MIN_CURR_THRESHOLD_SCALE - 1)
+	ktd2692_expresswire_write(led, (KTD2692_MM_MIN_CURR_THRESHOLD_SCALE - 1)
 				 | KTD2692_REG_MM_MIN_CURR_THRESHOLD_BASE);
 	ktd2692_expresswire_write(led, KTD2692_FLASH_MODE_CURR_PERCENT(45)
 				 | KTD2692_REG_FLASH_CURRENT_BASE);
diff --git a/drivers/leds/leds-lm3532.c b/drivers/leds/leds-lm3532.c
index 180895b83b88..0507c6575c08 100644
--- a/drivers/leds/leds-lm3532.c
+++ b/drivers/leds/leds-lm3532.c
@@ -23,11 +23,11 @@
 #define LM3532_REG_PWM_B_CFG	0x14
 #define LM3532_REG_PWM_C_CFG	0x15
 #define LM3532_REG_ZONE_CFG_A	0x16
-#define LM3532_REG_CTRL_A_BRT	0x17
+#define LM3532_REG_CTRL_A_FS_CURR	0x17
 #define LM3532_REG_ZONE_CFG_B	0x18
-#define LM3532_REG_CTRL_B_BRT	0x19
+#define LM3532_REG_CTRL_B_FS_CURR	0x19
 #define LM3532_REG_ZONE_CFG_C	0x1a
-#define LM3532_REG_CTRL_C_BRT	0x1b
+#define LM3532_REG_CTRL_C_FS_CURR	0x1b
 #define LM3532_REG_ENABLE	0x1d
 #define LM3532_ALS_CONFIG	0x23
 #define LM3532_REG_ZN_0_HI	0x60
@@ -38,9 +38,12 @@
 #define LM3532_REG_ZN_2_LO	0x65
 #define LM3532_REG_ZN_3_HI	0x66
 #define LM3532_REG_ZN_3_LO	0x67
+#define LM3532_REG_ZONE_TRGT_A	0x70
+#define LM3532_REG_ZONE_TRGT_B	0x75
+#define LM3532_REG_ZONE_TRGT_C	0x7a
 #define LM3532_REG_MAX		0x7e
 
-/* Contorl Enable */
+/* Control Enable */
 #define LM3532_CTRL_A_ENABLE	BIT(0)
 #define LM3532_CTRL_B_ENABLE	BIT(1)
 #define LM3532_CTRL_C_ENABLE	BIT(2)
@@ -86,6 +89,10 @@
 #define LM3532_NUM_AVG_VALS	8
 #define LM3532_NUM_IMP_VALS	32
 
+#define LM3532_FS_CURR_MIN	5000
+#define LM3532_FS_CURR_MAX	29800
+#define LM3532_FS_CURR_STEP	800
+
 /*
  * struct lm3532_als_data
  * @config - value of ALS configuration register
@@ -116,8 +123,11 @@ struct lm3532_als_data {
  * @priv - Pointer the device data structure
  * @control_bank - Control bank the LED is associated to
  * @mode - Mode of the LED string
+ * @ctrl_brt_pointer - Zone target register that controls the sink
  * @num_leds - Number of LED strings are supported in this array
+ * @full_scale_current - The full-scale current setting for the current sink.
  * @led_strings - The LED strings supported in this array
+ * @enabled - Enabled status
  * @label - LED label
  */
 struct lm3532_led {
@@ -126,7 +136,10 @@ struct lm3532_led {
 
 	int control_bank;
 	int mode;
+	int ctrl_brt_pointer;
 	int num_leds;
+	int full_scale_current;
+	int enabled:1;
 	u32 led_strings[LM3532_MAX_CONTROL_BANKS];
 	char label[LED_MAX_NAME_SIZE];
 };
@@ -168,11 +181,11 @@ static const struct reg_default lm3532_reg_defs[] = {
 	{LM3532_REG_PWM_B_CFG, 0x82},
 	{LM3532_REG_PWM_C_CFG, 0x82},
 	{LM3532_REG_ZONE_CFG_A, 0xf1},
-	{LM3532_REG_CTRL_A_BRT, 0xf3},
+	{LM3532_REG_CTRL_A_FS_CURR, 0xf3},
 	{LM3532_REG_ZONE_CFG_B, 0xf1},
-	{LM3532_REG_CTRL_B_BRT, 0xf3},
+	{LM3532_REG_CTRL_B_FS_CURR, 0xf3},
 	{LM3532_REG_ZONE_CFG_C, 0xf1},
-	{LM3532_REG_CTRL_C_BRT, 0xf3},
+	{LM3532_REG_CTRL_C_FS_CURR, 0xf3},
 	{LM3532_REG_ENABLE, 0xf8},
 	{LM3532_ALS_CONFIG, 0x44},
 	{LM3532_REG_ZN_0_HI, 0x35},
@@ -195,7 +208,7 @@ static const struct regmap_config lm3532_regmap_config = {
 	.cache_type = REGCACHE_FLAT,
 };
 
-const static int als_imp_table[LM3532_NUM_IMP_VALS] = {37000, 18500, 12330,
+static const int als_imp_table[LM3532_NUM_IMP_VALS] = {37000, 18500, 12330,
 						       92500, 7400, 6170, 5290,
 						       4630, 4110, 3700, 3360,
 						       3080, 2850, 2640, 2440,
@@ -252,7 +265,7 @@ static int lm3532_get_index(const int table[], int size, int value)
 	return -EINVAL;
 }
 
-const static int als_avrg_table[LM3532_NUM_AVG_VALS] = {17920, 35840, 71680,
+static const int als_avrg_table[LM3532_NUM_AVG_VALS] = {17920, 35840, 71680,
 							1433360, 286720, 573440,
 							1146880, 2293760};
 static int lm3532_get_als_avg_index(int avg_time)
@@ -267,7 +280,7 @@ static int lm3532_get_als_avg_index(int avg_time)
 				avg_time);
 }
 
-const static int ramp_table[LM3532_NUM_RAMP_VALS] = { 8, 1024, 2048, 4096, 8192,
+static const int ramp_table[LM3532_NUM_RAMP_VALS] = { 8, 1024, 2048, 4096, 8192,
 						     16384, 32768, 65536};
 static int lm3532_get_ramp_index(int ramp_time)
 {
@@ -281,11 +294,15 @@ static int lm3532_get_ramp_index(int ramp_time)
 				ramp_time);
 }
 
+/* Caller must take care of locking */
 static int lm3532_led_enable(struct lm3532_led *led_data)
 {
 	int ctrl_en_val = BIT(led_data->control_bank);
 	int ret;
 
+	if (led_data->enabled)
+		return 0;
+
 	ret = regmap_update_bits(led_data->priv->regmap, LM3532_REG_ENABLE,
 					 ctrl_en_val, ctrl_en_val);
 	if (ret) {
@@ -293,22 +310,38 @@ static int lm3532_led_enable(struct lm3532_led *led_data)
 		return ret;
 	}
 
-	return regulator_enable(led_data->priv->regulator);
+	ret = regulator_enable(led_data->priv->regulator);
+	if (ret < 0)
+		return ret;
+
+	led_data->enabled = 1;
+
+	return 0;
 }
 
+/* Caller must take care of locking */
 static int lm3532_led_disable(struct lm3532_led *led_data)
 {
 	int ctrl_en_val = BIT(led_data->control_bank);
 	int ret;
 
+	if (!led_data->enabled)
+		return 0;
+
 	ret = regmap_update_bits(led_data->priv->regmap, LM3532_REG_ENABLE,
-					 ctrl_en_val, ~ctrl_en_val);
+					 ctrl_en_val, 0);
 	if (ret) {
 		dev_err(led_data->priv->dev, "Failed to set ctrl:%d\n", ret);
 		return ret;
 	}
 
-	return regulator_disable(led_data->priv->regulator);
+	ret = regulator_disable(led_data->priv->regulator);
+	if (ret < 0)
+		return ret;
+
+	led_data->enabled = 0;
+
+	return 0;
 }
 
 static int lm3532_brightness_set(struct led_classdev *led_cdev,
@@ -321,7 +354,7 @@ static int lm3532_brightness_set(struct led_classdev *led_cdev,
 
 	mutex_lock(&led->priv->lock);
 
-	if (led->mode == LM3532_BL_MODE_ALS) {
+	if (led->mode == LM3532_ALS_CTRL) {
 		if (brt_val > LED_OFF)
 			ret = lm3532_led_enable(led);
 		else
@@ -339,8 +372,8 @@ static int lm3532_brightness_set(struct led_classdev *led_cdev,
 	if (ret)
 		goto unlock;
 
-	brightness_reg = LM3532_REG_CTRL_A_BRT + led->control_bank * 2;
-	brt_val = brt_val / LM3532_BRT_VAL_ADJUST;
+	brightness_reg = LM3532_REG_ZONE_TRGT_A + led->control_bank * 5 +
+			 (led->ctrl_brt_pointer >> 2);
 
 	ret = regmap_write(led->priv->regmap, brightness_reg, brt_val);
 
@@ -356,8 +389,43 @@ static int lm3532_init_registers(struct lm3532_led *led)
 	unsigned int output_cfg_val = 0;
 	unsigned int output_cfg_shift = 0;
 	unsigned int output_cfg_mask = 0;
+	unsigned int brightness_config_reg;
+	unsigned int brightness_config_val;
+	int fs_current_reg;
+	int fs_current_val;
 	int ret, i;
 
+	if (drvdata->enable_gpio)
+		gpiod_direction_output(drvdata->enable_gpio, 1);
+
+	brightness_config_reg = LM3532_REG_ZONE_CFG_A + led->control_bank * 2;
+	/*
+	 * This could be hard coded to the default value but the control
+	 * brightness register may have changed during boot.
+	 */
+	ret = regmap_read(drvdata->regmap, brightness_config_reg,
+			  &led->ctrl_brt_pointer);
+	if (ret)
+		return ret;
+
+	led->ctrl_brt_pointer &= LM3532_ZONE_MASK;
+	brightness_config_val = led->ctrl_brt_pointer | led->mode;
+	ret = regmap_write(drvdata->regmap, brightness_config_reg,
+			   brightness_config_val);
+	if (ret)
+		return ret;
+
+	if (led->full_scale_current) {
+		fs_current_reg = LM3532_REG_CTRL_A_FS_CURR + led->control_bank * 2;
+		fs_current_val = (led->full_scale_current - LM3532_FS_CURR_MIN) /
+				 LM3532_FS_CURR_STEP;
+
+		ret = regmap_write(drvdata->regmap, fs_current_reg,
+				   fs_current_val);
+		if (ret)
+			return ret;
+	}
+
 	for (i = 0; i < led->num_leds; i++) {
 		output_cfg_shift = led->led_strings[i] * 2;
 		output_cfg_val |= (led->control_bank << output_cfg_shift);
@@ -382,7 +450,6 @@ static int lm3532_als_configure(struct lm3532_data *priv,
 	struct lm3532_als_data *als = priv->als_data;
 	u32 als_vmin, als_vmax, als_vstep;
 	int zone_reg = LM3532_REG_ZN_0_HI;
-	int brightnes_config_reg;
 	int ret;
 	int i;
 
@@ -411,14 +478,7 @@ static int lm3532_als_configure(struct lm3532_data *priv,
 	als->config = (als->als_avrg_time | (LM3532_ENABLE_ALS) |
 		(als->als_input_mode << LM3532_ALS_SEL_SHIFT));
 
-	ret = regmap_write(priv->regmap, LM3532_ALS_CONFIG, als->config);
-	if (ret)
-		return ret;
-
-	brightnes_config_reg = LM3532_REG_ZONE_CFG_A + led->control_bank * 2;
-
-	return regmap_update_bits(priv->regmap, brightnes_config_reg,
-				  LM3532_I2C_CTRL, LM3532_ALS_CTRL);
+	return regmap_write(priv->regmap, LM3532_ALS_CONFIG, als->config);
 }
 
 static int lm3532_parse_als(struct lm3532_data *priv)
@@ -541,18 +601,27 @@ static int lm3532_parse_node(struct lm3532_data *priv)
 			goto child_out;
 		}
 
+		if (fwnode_property_present(child, "led-max-microamp") &&
+		    fwnode_property_read_u32(child, "led-max-microamp",
+					     &led->full_scale_current))
+			dev_err(&priv->client->dev,
+				"Failed getting led-max-microamp\n");
+		else
+			led->full_scale_current = min(led->full_scale_current,
+						      LM3532_FS_CURR_MAX);
+
 		if (led->mode == LM3532_BL_MODE_ALS) {
+			led->mode = LM3532_ALS_CTRL;
 			ret = lm3532_parse_als(priv);
 			if (ret)
 				dev_err(&priv->client->dev, "Failed to parse als\n");
 			else
 				lm3532_als_configure(priv, led);
+		} else {
+			led->mode = LM3532_I2C_CTRL;
 		}
 
-		led->num_leds = fwnode_property_read_u32_array(child,
-							       "led-sources",
-							       NULL, 0);
-
+		led->num_leds = fwnode_property_count_u32(child, "led-sources");
 		if (led->num_leds > LM3532_MAX_LED_STRINGS) {
 			dev_err(&priv->client->dev, "To many LED string defined\n");
 			continue;
@@ -590,7 +659,13 @@ static int lm3532_parse_node(struct lm3532_data *priv)
 			goto child_out;
 		}
 
-		lm3532_init_registers(led);
+		ret = lm3532_init_registers(led);
+		if (ret) {
+			dev_err(&priv->client->dev, "register init err: %d\n",
+				ret);
+			fwnode_handle_put(child);
+			goto child_out;
+		}
 
 		i++;
 	}
@@ -637,9 +712,6 @@ static int lm3532_probe(struct i2c_client *client,
 		return ret;
 	}
 
-	if (drvdata->enable_gpio)
-		gpiod_direction_output(drvdata->enable_gpio, 1);
-
 	return ret;
 }
 
diff --git a/drivers/leds/leds-lm3601x.c b/drivers/leds/leds-lm3601x.c
index 081aa71e43a3..b02972f1a341 100644
--- a/drivers/leds/leds-lm3601x.c
+++ b/drivers/leds/leds-lm3601x.c
@@ -10,7 +10,6 @@
 #include <linux/module.h>
 #include <linux/regmap.h>
 #include <linux/slab.h>
-#include <uapi/linux/uleds.h>
 
 #define LM3601X_LED_IR		0x0
 #define LM3601X_LED_TORCH	0x1
@@ -90,8 +89,6 @@ struct lm3601x_led {
 	struct regmap *regmap;
 	struct mutex lock;
 
-	char led_name[LED_MAX_NAME_SIZE];
-
 	unsigned int flash_timeout;
 	unsigned int last_flag;
 
@@ -322,10 +319,12 @@ static const struct led_flash_ops flash_ops = {
 	.fault_get		= lm3601x_flash_fault_get,
 };
 
-static int lm3601x_register_leds(struct lm3601x_led *led)
+static int lm3601x_register_leds(struct lm3601x_led *led,
+				 struct fwnode_handle *fwnode)
 {
 	struct led_classdev *led_cdev;
 	struct led_flash_setting *setting;
+	struct led_init_data init_data = {};
 
 	led->fled_cdev.ops = &flash_ops;
 
@@ -342,20 +341,25 @@ static int lm3601x_register_leds(struct lm3601x_led *led)
 	setting->val = led->flash_current_max;
 
 	led_cdev = &led->fled_cdev.led_cdev;
-	led_cdev->name = led->led_name;
 	led_cdev->brightness_set_blocking = lm3601x_brightness_set;
 	led_cdev->max_brightness = DIV_ROUND_UP(led->torch_current_max,
 						LM3601X_TORCH_REG_DIV);
 	led_cdev->flags |= LED_DEV_CAP_FLASH;
 
-	return led_classdev_flash_register(&led->client->dev, &led->fled_cdev);
+	init_data.fwnode = fwnode;
+	init_data.devicename = led->client->name;
+	init_data.default_label = (led->led_mode == LM3601X_LED_TORCH) ?
+					"torch" : "infrared";
+
+	return led_classdev_flash_register_ext(&led->client->dev,
+						&led->fled_cdev, &init_data);
 }
 
-static int lm3601x_parse_node(struct lm3601x_led *led)
+static int lm3601x_parse_node(struct lm3601x_led *led,
+			      struct fwnode_handle **fwnode)
 {
 	struct fwnode_handle *child = NULL;
 	int ret = -ENODEV;
-	const char *name;
 
 	child = device_get_next_child_node(&led->client->dev, child);
 	if (!child) {
@@ -376,17 +380,6 @@ static int lm3601x_parse_node(struct lm3601x_led *led)
 		goto out_err;
 	}
 
-	ret = fwnode_property_read_string(child, "label", &name);
-	if (ret) {
-		if (led->led_mode == LM3601X_LED_TORCH)
-			name = "torch";
-		else
-			name = "infrared";
-	}
-
-	snprintf(led->led_name, sizeof(led->led_name),
-		"%s:%s", led->client->name, name);
-
 	ret = fwnode_property_read_u32(child, "led-max-microamp",
 					&led->torch_current_max);
 	if (ret) {
@@ -411,6 +404,8 @@ static int lm3601x_parse_node(struct lm3601x_led *led)
 		goto out_err;
 	}
 
+	*fwnode = child;
+
 out_err:
 	fwnode_handle_put(child);
 	return ret;
@@ -419,6 +414,7 @@ out_err:
 static int lm3601x_probe(struct i2c_client *client)
 {
 	struct lm3601x_led *led;
+	struct fwnode_handle *fwnode;
 	int ret;
 
 	led = devm_kzalloc(&client->dev, sizeof(*led), GFP_KERNEL);
@@ -428,7 +424,7 @@ static int lm3601x_probe(struct i2c_client *client)
 	led->client = client;
 	i2c_set_clientdata(client, led);
 
-	ret = lm3601x_parse_node(led);
+	ret = lm3601x_parse_node(led, &fwnode);
 	if (ret)
 		return -ENODEV;
 
@@ -442,7 +438,7 @@ static int lm3601x_probe(struct i2c_client *client)
 
 	mutex_init(&led->lock);
 
-	return lm3601x_register_leds(led);
+	return lm3601x_register_leds(led, fwnode);
 }
 
 static int lm3601x_remove(struct i2c_client *client)
diff --git a/drivers/leds/leds-lm36274.c b/drivers/leds/leds-lm36274.c
index ed9dc857ec8f..836b60c9a2b8 100644
--- a/drivers/leds/leds-lm36274.c
+++ b/drivers/leds/leds-lm36274.c
@@ -90,9 +90,7 @@ static int lm36274_parse_dt(struct lm36274 *lm36274_data)
 			snprintf(label, sizeof(label),
 				 "%s:%s", lm36274_data->pdev->name, name);
 
-		lm36274_data->num_leds = fwnode_property_read_u32_array(child,
-							  "led-sources",
-							  NULL, 0);
+		lm36274_data->num_leds = fwnode_property_count_u32(child, "led-sources");
 		if (lm36274_data->num_leds <= 0)
 			return -ENODEV;
 
diff --git a/drivers/leds/leds-lm3692x.c b/drivers/leds/leds-lm3692x.c
index 4f413a7c5f05..3d381f2f73d0 100644
--- a/drivers/leds/leds-lm3692x.c
+++ b/drivers/leds/leds-lm3692x.c
@@ -13,7 +13,6 @@
 #include <linux/regmap.h>
 #include <linux/regulator/consumer.h>
 #include <linux/slab.h>
-#include <uapi/linux/uleds.h>
 
 #define LM36922_MODEL	0
 #define LM36923_MODEL	1
@@ -103,7 +102,6 @@
  * @regmap - Devices register map
  * @enable_gpio - VDDIO/EN gpio to enable communication interface
  * @regulator - LED supply regulator pointer
- * @label - LED label
  * @led_enable - LED sync to be enabled
  * @model_id - Current device model ID enumerated
  */
@@ -114,7 +112,6 @@ struct lm3692x_led {
 	struct regmap *regmap;
 	struct gpio_desc *enable_gpio;
 	struct regulator *regulator;
-	char label[LED_MAX_NAME_SIZE];
 	int led_enable;
 	int model_id;
 };
@@ -325,7 +322,7 @@ out:
 static int lm3692x_probe_dt(struct lm3692x_led *led)
 {
 	struct fwnode_handle *child = NULL;
-	const char *name;
+	struct led_init_data init_data = {};
 	int ret;
 
 	led->enable_gpio = devm_gpiod_get_optional(&led->client->dev,
@@ -350,30 +347,23 @@ static int lm3692x_probe_dt(struct lm3692x_led *led)
 	fwnode_property_read_string(child, "linux,default-trigger",
 				    &led->led_dev.default_trigger);
 
-	ret = fwnode_property_read_string(child, "label", &name);
-	if (ret)
-		snprintf(led->label, sizeof(led->label),
-			"%s::", led->client->name);
-	else
-		snprintf(led->label, sizeof(led->label),
-			 "%s:%s", led->client->name, name);
-
 	ret = fwnode_property_read_u32(child, "reg", &led->led_enable);
 	if (ret) {
 		dev_err(&led->client->dev, "reg DT property missing\n");
 		return ret;
 	}
 
-	led->led_dev.name = led->label;
+	init_data.fwnode = child;
+	init_data.devicename = led->client->name;
+	init_data.default_label = ":";
 
-	ret = devm_led_classdev_register(&led->client->dev, &led->led_dev);
+	ret = devm_led_classdev_register_ext(&led->client->dev, &led->led_dev,
+					     &init_data);
 	if (ret) {
 		dev_err(&led->client->dev, "led register err: %d\n", ret);
 		return ret;
 	}
 
-	led->led_dev.dev->of_node = to_of_node(child);
-
 	return 0;
 }
 
diff --git a/drivers/leds/leds-lm3697.c b/drivers/leds/leds-lm3697.c
index 54e0e35df824..b71711aff8a3 100644
--- a/drivers/leds/leds-lm3697.c
+++ b/drivers/leds/leds-lm3697.c
@@ -244,10 +244,7 @@ static int lm3697_probe_dt(struct lm3697 *priv)
 		led->lmu_data.lsb_brightness_reg = LM3697_CTRL_A_BRT_LSB +
 						   led->control_bank * 2;
 
-		led->num_leds = fwnode_property_read_u32_array(child,
-						       "led-sources",
-						       NULL, 0);
-
+		led->num_leds = fwnode_property_count_u32(child, "led-sources");
 		if (led->num_leds > LM3697_MAX_LED_STRINGS) {
 			dev_err(&priv->client->dev, "To many LED strings defined\n");
 			continue;
diff --git a/drivers/leds/leds-lp5562.c b/drivers/leds/leds-lp5562.c
index 37632fc63741..edb57c42e8b1 100644
--- a/drivers/leds/leds-lp5562.c
+++ b/drivers/leds/leds-lp5562.c
@@ -260,7 +260,11 @@ static void lp5562_firmware_loaded(struct lp55xx_chip *chip)
 {
 	const struct firmware *fw = chip->fw;
 
-	if (fw->size > LP5562_PROGRAM_LENGTH) {
+	/*
+	 * the firmware is encoded in ascii hex character, with 2 chars
+	 * per byte
+	 */
+	if (fw->size > (LP5562_PROGRAM_LENGTH * 2)) {
 		dev_err(&chip->cl->dev, "firmware data size overflow: %zu\n",
 			fw->size);
 		return;
diff --git a/drivers/leds/leds-lp8860.c b/drivers/leds/leds-lp8860.c
index ed680d0c15b0..ac2f5d6272dc 100644
--- a/drivers/leds/leds-lp8860.c
+++ b/drivers/leds/leds-lp8860.c
@@ -18,7 +18,6 @@
 #include <linux/of_gpio.h>
 #include <linux/gpio/consumer.h>
 #include <linux/slab.h>
-#include <uapi/linux/uleds.h>
 
 #define LP8860_DISP_CL1_BRT_MSB		0x00
 #define LP8860_DISP_CL1_BRT_LSB		0x01
@@ -83,6 +82,8 @@
 
 #define LP8860_CLEAR_FAULTS		0x01
 
+#define LP8860_NAME			"lp8860"
+
 /**
  * struct lp8860_led -
  * @lock - Lock for reading/writing the device
@@ -92,7 +93,6 @@
  * @eeprom_regmap - EEPROM register map
  * @enable_gpio - VDDIO/EN gpio to enable communication interface
  * @regulator - LED supply regulator pointer
- * @label - LED label
  */
 struct lp8860_led {
 	struct mutex lock;
@@ -102,7 +102,6 @@ struct lp8860_led {
 	struct regmap *eeprom_regmap;
 	struct gpio_desc *enable_gpio;
 	struct regulator *regulator;
-	char label[LED_MAX_NAME_SIZE];
 };
 
 struct lp8860_eeprom_reg {
@@ -383,25 +382,19 @@ static int lp8860_probe(struct i2c_client *client,
 	struct lp8860_led *led;
 	struct device_node *np = client->dev.of_node;
 	struct device_node *child_node;
-	const char *name;
+	struct led_init_data init_data = {};
 
 	led = devm_kzalloc(&client->dev, sizeof(*led), GFP_KERNEL);
 	if (!led)
 		return -ENOMEM;
 
-	for_each_available_child_of_node(np, child_node) {
-		led->led_dev.default_trigger = of_get_property(child_node,
-						    "linux,default-trigger",
-						    NULL);
-
-		ret = of_property_read_string(child_node, "label", &name);
-		if (!ret)
-			snprintf(led->label, sizeof(led->label), "%s:%s",
-				 id->name, name);
-		else
-			snprintf(led->label, sizeof(led->label),
-				"%s::display_cluster", id->name);
-	}
+	child_node = of_get_next_available_child(np, NULL);
+	if (!child_node)
+		return -EINVAL;
+
+	led->led_dev.default_trigger = of_get_property(child_node,
+					    "linux,default-trigger",
+					    NULL);
 
 	led->enable_gpio = devm_gpiod_get_optional(&client->dev,
 						   "enable", GPIOD_OUT_LOW);
@@ -416,7 +409,6 @@ static int lp8860_probe(struct i2c_client *client,
 		led->regulator = NULL;
 
 	led->client = client;
-	led->led_dev.name = led->label;
 	led->led_dev.brightness_set_blocking = lp8860_brightness_set;
 
 	mutex_init(&led->lock);
@@ -443,7 +435,12 @@ static int lp8860_probe(struct i2c_client *client,
 	if (ret)
 		return ret;
 
-	ret = devm_led_classdev_register(&client->dev, &led->led_dev);
+	init_data.fwnode = of_fwnode_handle(child_node);
+	init_data.devicename = LP8860_NAME;
+	init_data.default_label = ":display_cluster";
+
+	ret = devm_led_classdev_register_ext(&client->dev, &led->led_dev,
+					     &init_data);
 	if (ret) {
 		dev_err(&client->dev, "led register err: %d\n", ret);
 		return ret;
diff --git a/drivers/leds/leds-lt3593.c b/drivers/leds/leds-lt3593.c
index 83e8e58d81cb..c94995f0daa2 100644
--- a/drivers/leds/leds-lt3593.c
+++ b/drivers/leds/leds-lt3593.c
@@ -10,10 +10,10 @@
 #include <linux/slab.h>
 #include <linux/module.h>
 #include <linux/of.h>
-#include <uapi/linux/uleds.h>
+
+#define LED_LT3593_NAME "lt3593"
 
 struct lt3593_led_data {
-	char name[LED_MAX_NAME_SIZE];
 	struct led_classdev cdev;
 	struct gpio_desc *gpiod;
 };
@@ -66,6 +66,7 @@ static int lt3593_led_probe(struct platform_device *pdev)
 	struct lt3593_led_data *led_data;
 	struct fwnode_handle *child;
 	int ret, state = LEDS_GPIO_DEFSTATE_OFF;
+	struct led_init_data init_data = {};
 	const char *tmp;
 
 	if (!dev->of_node)
@@ -86,14 +87,6 @@ static int lt3593_led_probe(struct platform_device *pdev)
 
 	child = device_get_next_child_node(dev, NULL);
 
-	ret = fwnode_property_read_string(child, "label", &tmp);
-	if (ret < 0)
-		snprintf(led_data->name, sizeof(led_data->name),
-			 "lt3593::");
-	else
-		snprintf(led_data->name, sizeof(led_data->name),
-			 "lt3593:%s", tmp);
-
 	fwnode_property_read_string(child, "linux,default-trigger",
 				    &led_data->cdev.default_trigger);
 
@@ -102,11 +95,14 @@ static int lt3593_led_probe(struct platform_device *pdev)
 			state = LEDS_GPIO_DEFSTATE_ON;
 	}
 
-	led_data->cdev.name = led_data->name;
 	led_data->cdev.brightness_set_blocking = lt3593_led_set;
 	led_data->cdev.brightness = state ? LED_FULL : LED_OFF;
 
-	ret = devm_led_classdev_register(dev, &led_data->cdev);
+	init_data.fwnode = child;
+	init_data.devicename = LED_LT3593_NAME;
+	init_data.default_label = ":";
+
+	ret = devm_led_classdev_register_ext(dev, &led_data->cdev, &init_data);
 	if (ret < 0) {
 		fwnode_handle_put(child);
 		return ret;
diff --git a/drivers/leds/leds-max77650.c b/drivers/leds/leds-max77650.c
index 8a8e5c65b157..4c2d0b3c6dad 100644
--- a/drivers/leds/leds-max77650.c
+++ b/drivers/leds/leds-max77650.c
@@ -62,7 +62,7 @@ static int max77650_led_brightness_set(struct led_classdev *cdev,
 
 static int max77650_led_probe(struct platform_device *pdev)
 {
-	struct device_node *of_node, *child;
+	struct fwnode_handle *child;
 	struct max77650_led *leds, *led;
 	struct device *dev;
 	struct regmap *map;
@@ -71,10 +71,6 @@ static int max77650_led_probe(struct platform_device *pdev)
 	u32 reg;
 
 	dev = &pdev->dev;
-	of_node = dev->of_node;
-
-	if (!of_node)
-		return -ENODEV;
 
 	leds = devm_kcalloc(dev, sizeof(*leds),
 			    MAX77650_LED_NUM_LEDS, GFP_KERNEL);
@@ -85,14 +81,16 @@ static int max77650_led_probe(struct platform_device *pdev)
 	if (!map)
 		return -ENODEV;
 
-	num_leds = of_get_child_count(of_node);
+	num_leds = device_get_child_node_count(dev);
 	if (!num_leds || num_leds > MAX77650_LED_NUM_LEDS)
 		return -ENODEV;
 
-	for_each_child_of_node(of_node, child) {
-		rv = of_property_read_u32(child, "reg", &reg);
-		if (rv || reg >= MAX77650_LED_NUM_LEDS)
-			return -EINVAL;
+	device_for_each_child_node(dev, child) {
+		rv = fwnode_property_read_u32(child, "reg", &reg);
+		if (rv || reg >= MAX77650_LED_NUM_LEDS) {
+			rv = -EINVAL;
+			goto err_node_put;
+		}
 
 		led = &leds[reg];
 		led->map = map;
@@ -101,35 +99,40 @@ static int max77650_led_probe(struct platform_device *pdev)
 		led->cdev.brightness_set_blocking = max77650_led_brightness_set;
 		led->cdev.max_brightness = MAX77650_LED_MAX_BRIGHTNESS;
 
-		label = of_get_property(child, "label", NULL);
-		if (!label) {
+		rv = fwnode_property_read_string(child, "label", &label);
+		if (rv) {
 			led->cdev.name = "max77650::";
 		} else {
 			led->cdev.name = devm_kasprintf(dev, GFP_KERNEL,
 							"max77650:%s", label);
-			if (!led->cdev.name)
-				return -ENOMEM;
+			if (!led->cdev.name) {
+				rv = -ENOMEM;
+				goto err_node_put;
+			}
 		}
 
-		of_property_read_string(child, "linux,default-trigger",
-					&led->cdev.default_trigger);
+		fwnode_property_read_string(child, "linux,default-trigger",
+					    &led->cdev.default_trigger);
 
-		rv = devm_of_led_classdev_register(dev, child, &led->cdev);
+		rv = devm_led_classdev_register(dev, &led->cdev);
 		if (rv)
-			return rv;
+			goto err_node_put;
 
 		rv = regmap_write(map, led->regA, MAX77650_LED_A_DEFAULT);
 		if (rv)
-			return rv;
+			goto err_node_put;
 
 		rv = regmap_write(map, led->regB, MAX77650_LED_B_DEFAULT);
 		if (rv)
-			return rv;
+			goto err_node_put;
 	}
 
 	return regmap_write(map,
 			    MAX77650_REG_CNFG_LED_TOP,
 			    MAX77650_LED_TOP_DEFAULT);
+err_node_put:
+	fwnode_handle_put(child);
+	return rv;
 }
 
 static struct platform_driver max77650_led_driver = {
@@ -143,3 +146,4 @@ module_platform_driver(max77650_led_driver);
 MODULE_DESCRIPTION("MAXIM 77650/77651 LED driver");
 MODULE_AUTHOR("Bartosz Golaszewski <bgolaszewski@baylibre.com>");
 MODULE_LICENSE("GPL v2");
+MODULE_ALIAS("platform:max77650-led");
diff --git a/drivers/leds/leds-netxbig.c b/drivers/leds/leds-netxbig.c
index 10497a466775..14ef4ccdda3a 100644
--- a/drivers/leds/leds-netxbig.c
+++ b/drivers/leds/leds-netxbig.c
@@ -15,7 +15,48 @@
 #include <linux/gpio.h>
 #include <linux/of_gpio.h>
 #include <linux/leds.h>
-#include <linux/platform_data/leds-kirkwood-netxbig.h>
+
+struct netxbig_gpio_ext {
+	unsigned int	*addr;
+	int		num_addr;
+	unsigned int	*data;
+	int		num_data;
+	unsigned int	enable;
+};
+
+enum netxbig_led_mode {
+	NETXBIG_LED_OFF,
+	NETXBIG_LED_ON,
+	NETXBIG_LED_SATA,
+	NETXBIG_LED_TIMER1,
+	NETXBIG_LED_TIMER2,
+	NETXBIG_LED_MODE_NUM,
+};
+
+#define NETXBIG_LED_INVALID_MODE NETXBIG_LED_MODE_NUM
+
+struct netxbig_led_timer {
+	unsigned long		delay_on;
+	unsigned long		delay_off;
+	enum netxbig_led_mode	mode;
+};
+
+struct netxbig_led {
+	const char	*name;
+	const char	*default_trigger;
+	int		mode_addr;
+	int		*mode_val;
+	int		bright_addr;
+	int		bright_max;
+};
+
+struct netxbig_led_platform_data {
+	struct netxbig_gpio_ext	*gpio_ext;
+	struct netxbig_led_timer *timer;
+	int			num_timer;
+	struct netxbig_led	*leds;
+	int			num_leds;
+};
 
 /*
  * GPIO extension bus.
@@ -306,7 +347,6 @@ static int create_netxbig_led(struct platform_device *pdev,
 	return devm_led_classdev_register(&pdev->dev, &led_dat->cdev);
 }
 
-#ifdef CONFIG_OF_GPIO
 static int gpio_ext_get_of_pdata(struct device *dev, struct device_node *np,
 				 struct netxbig_gpio_ext *gpio_ext)
 {
@@ -388,12 +428,14 @@ static int netxbig_leds_get_of_pdata(struct device *dev,
 	}
 
 	gpio_ext = devm_kzalloc(dev, sizeof(*gpio_ext), GFP_KERNEL);
-	if (!gpio_ext)
+	if (!gpio_ext) {
+		of_node_put(gpio_ext_np);
 		return -ENOMEM;
+	}
 	ret = gpio_ext_get_of_pdata(dev, gpio_ext_np, gpio_ext);
+	of_node_put(gpio_ext_np);
 	if (ret)
 		return ret;
-	of_node_put(gpio_ext_np);
 	pdata->gpio_ext = gpio_ext;
 
 	/* Timers (optional) */
@@ -522,30 +564,20 @@ static const struct of_device_id of_netxbig_leds_match[] = {
 	{},
 };
 MODULE_DEVICE_TABLE(of, of_netxbig_leds_match);
-#else
-static inline int
-netxbig_leds_get_of_pdata(struct device *dev,
-			  struct netxbig_led_platform_data *pdata)
-{
-	return -ENODEV;
-}
-#endif /* CONFIG_OF_GPIO */
 
 static int netxbig_led_probe(struct platform_device *pdev)
 {
-	struct netxbig_led_platform_data *pdata = dev_get_platdata(&pdev->dev);
+	struct netxbig_led_platform_data *pdata;
 	struct netxbig_led_data *leds_data;
 	int i;
 	int ret;
 
-	if (!pdata) {
-		pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
-		if (!pdata)
-			return -ENOMEM;
-		ret = netxbig_leds_get_of_pdata(&pdev->dev, pdata);
-		if (ret)
-			return ret;
-	}
+	pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
+	if (!pdata)
+		return -ENOMEM;
+	ret = netxbig_leds_get_of_pdata(&pdev->dev, pdata);
+	if (ret)
+		return ret;
 
 	leds_data = devm_kcalloc(&pdev->dev,
 				 pdata->num_leds, sizeof(*leds_data),
@@ -571,7 +603,7 @@ static struct platform_driver netxbig_led_driver = {
 	.probe		= netxbig_led_probe,
 	.driver		= {
 		.name		= "leds-netxbig",
-		.of_match_table	= of_match_ptr(of_netxbig_leds_match),
+		.of_match_table	= of_netxbig_leds_match,
 	},
 };
 
diff --git a/drivers/leds/leds-ns2.c b/drivers/leds/leds-ns2.c
index f92e2c07c1c6..7c500dfdcfa3 100644
--- a/drivers/leds/leds-ns2.c
+++ b/drivers/leds/leds-ns2.c
@@ -245,7 +245,7 @@ ns2_leds_get_of_pdata(struct device *dev, struct ns2_led_platform_data *pdata)
 	struct device_node *np = dev->of_node;
 	struct device_node *child;
 	struct ns2_led *led, *leds;
-	int num_leds = 0;
+	int ret, num_leds = 0;
 
 	num_leds = of_get_child_count(np);
 	if (!num_leds)
@@ -259,16 +259,16 @@ ns2_leds_get_of_pdata(struct device *dev, struct ns2_led_platform_data *pdata)
 	led = leds;
 	for_each_child_of_node(np, child) {
 		const char *string;
-		int ret, i, num_modes;
+		int i, num_modes;
 		struct ns2_led_modval *modval;
 
 		ret = of_get_named_gpio(child, "cmd-gpio", 0);
 		if (ret < 0)
-			return ret;
+			goto err_node_put;
 		led->cmd = ret;
 		ret = of_get_named_gpio(child, "slow-gpio", 0);
 		if (ret < 0)
-			return ret;
+			goto err_node_put;
 		led->slow = ret;
 		ret = of_property_read_string(child, "label", &string);
 		led->name = (ret == 0) ? string : child->name;
@@ -281,7 +281,8 @@ ns2_leds_get_of_pdata(struct device *dev, struct ns2_led_platform_data *pdata)
 		if (ret < 0 || ret % 3) {
 			dev_err(dev,
 				"Missing or malformed modes-map property\n");
-			return -EINVAL;
+			ret = -EINVAL;
+			goto err_node_put;
 		}
 
 		num_modes = ret / 3;
@@ -289,8 +290,10 @@ ns2_leds_get_of_pdata(struct device *dev, struct ns2_led_platform_data *pdata)
 				      num_modes,
 				      sizeof(struct ns2_led_modval),
 				      GFP_KERNEL);
-		if (!modval)
-			return -ENOMEM;
+		if (!modval) {
+			ret = -ENOMEM;
+			goto err_node_put;
+		}
 
 		for (i = 0; i < num_modes; i++) {
 			of_property_read_u32_index(child,
@@ -314,6 +317,10 @@ ns2_leds_get_of_pdata(struct device *dev, struct ns2_led_platform_data *pdata)
 	pdata->num_leds = num_leds;
 
 	return 0;
+
+err_node_put:
+	of_node_put(child);
+	return ret;
 }
 
 static const struct of_device_id of_ns2_leds_match[] = {
diff --git a/drivers/leds/leds-pca9532.c b/drivers/leds/leds-pca9532.c
index 290871072d65..c7c7199e8ebd 100644
--- a/drivers/leds/leds-pca9532.c
+++ b/drivers/leds/leds-pca9532.c
@@ -16,7 +16,7 @@
 #include <linux/mutex.h>
 #include <linux/workqueue.h>
 #include <linux/leds-pca9532.h>
-#include <linux/gpio.h>
+#include <linux/gpio/driver.h>
 #include <linux/of.h>
 #include <linux/of_device.h>
 
diff --git a/drivers/leds/leds-pwm.c b/drivers/leds/leds-pwm.c
index 48d068f80f11..8b6965a563e9 100644
--- a/drivers/leds/leds-pwm.c
+++ b/drivers/leds/leds-pwm.c
@@ -65,12 +65,6 @@ static int led_pwm_set(struct led_classdev *led_cdev,
 	return 0;
 }
 
-static inline size_t sizeof_pwm_leds_priv(int num_leds)
-{
-	return sizeof(struct led_pwm_priv) +
-		      (sizeof(struct led_pwm_data) * num_leds);
-}
-
 static int led_pwm_add(struct device *dev, struct led_pwm_priv *priv,
 		       struct led_pwm *led, struct fwnode_handle *fwnode)
 {
@@ -111,8 +105,7 @@ static int led_pwm_add(struct device *dev, struct led_pwm_priv *priv,
 	if (!led_data->period && (led->pwm_period_ns > 0))
 		led_data->period = led->pwm_period_ns;
 
-	ret = devm_of_led_classdev_register(dev, to_of_node(fwnode),
-					    &led_data->cdev);
+	ret = devm_led_classdev_register(dev, &led_data->cdev);
 	if (ret == 0) {
 		priv->num_leds++;
 		led_pwm_set(&led_data->cdev, led_data->cdev.brightness);
@@ -175,7 +168,7 @@ static int led_pwm_probe(struct platform_device *pdev)
 	if (!count)
 		return -EINVAL;
 
-	priv = devm_kzalloc(&pdev->dev, sizeof_pwm_leds_priv(count),
+	priv = devm_kzalloc(&pdev->dev, struct_size(priv, leds, count),
 			    GFP_KERNEL);
 	if (!priv)
 		return -ENOMEM;
diff --git a/drivers/leds/leds-sc27xx-bltc.c b/drivers/leds/leds-sc27xx-bltc.c
index fecf27fb1cdc..0ede87420bfc 100644
--- a/drivers/leds/leds-sc27xx-bltc.c
+++ b/drivers/leds/leds-sc27xx-bltc.c
@@ -6,7 +6,6 @@
 #include <linux/of.h>
 #include <linux/platform_device.h>
 #include <linux/regmap.h>
-#include <uapi/linux/uleds.h>
 
 /* PMIC global control register definition */
 #define SC27XX_MODULE_EN0	0xc08
@@ -46,7 +45,7 @@
 #define SC27XX_DELTA_T_MAX	(SC27XX_LEDS_STEP * 255)
 
 struct sc27xx_led {
-	char name[LED_MAX_NAME_SIZE];
+	struct fwnode_handle *fwnode;
 	struct led_classdev ldev;
 	struct sc27xx_led_priv *priv;
 	u8 line;
@@ -249,19 +248,24 @@ static int sc27xx_led_register(struct device *dev, struct sc27xx_led_priv *priv)
 
 	for (i = 0; i < SC27XX_LEDS_MAX; i++) {
 		struct sc27xx_led *led = &priv->leds[i];
+		struct led_init_data init_data = {};
 
 		if (!led->active)
 			continue;
 
 		led->line = i;
 		led->priv = priv;
-		led->ldev.name = led->name;
 		led->ldev.brightness_set_blocking = sc27xx_led_set;
 		led->ldev.pattern_set = sc27xx_led_pattern_set;
 		led->ldev.pattern_clear = sc27xx_led_pattern_clear;
 		led->ldev.default_trigger = "pattern";
 
-		err = devm_led_classdev_register(dev, &led->ldev);
+		init_data.fwnode = led->fwnode;
+		init_data.devicename = "sc27xx";
+		init_data.default_label = ":";
+
+		err = devm_led_classdev_register_ext(dev, &led->ldev,
+						     &init_data);
 		if (err)
 			return err;
 	}
@@ -274,7 +278,6 @@ static int sc27xx_led_probe(struct platform_device *pdev)
 	struct device *dev = &pdev->dev;
 	struct device_node *np = dev->of_node, *child;
 	struct sc27xx_led_priv *priv;
-	const char *str;
 	u32 base, count, reg;
 	int err;
 
@@ -316,15 +319,8 @@ static int sc27xx_led_probe(struct platform_device *pdev)
 			return -EINVAL;
 		}
 
+		priv->leds[reg].fwnode = of_fwnode_handle(child);
 		priv->leds[reg].active = true;
-
-		err = of_property_read_string(child, "label", &str);
-		if (err)
-			snprintf(priv->leds[reg].name, LED_MAX_NAME_SIZE,
-				 "sc27xx::");
-		else
-			snprintf(priv->leds[reg].name, LED_MAX_NAME_SIZE,
-				 "sc27xx:%s", str);
 	}
 
 	err = sc27xx_led_register(dev, priv);
diff --git a/drivers/leds/leds-syscon.c b/drivers/leds/leds-syscon.c
index e35dff0050f0..b58f3cafe16f 100644
--- a/drivers/leds/leds-syscon.c
+++ b/drivers/leds/leds-syscon.c
@@ -115,7 +115,7 @@ static int syscon_led_probe(struct platform_device *pdev)
 	}
 	sled->cdev.brightness_set = syscon_led_set;
 
-	ret = led_classdev_register(dev, &sled->cdev);
+	ret = devm_led_classdev_register(dev, &sled->cdev);
 	if (ret < 0)
 		return ret;
 
diff --git a/drivers/leds/leds-ti-lmu-common.c b/drivers/leds/leds-ti-lmu-common.c
index adc7293004f1..d7f10ad721ba 100644
--- a/drivers/leds/leds-ti-lmu-common.c
+++ b/drivers/leds/leds-ti-lmu-common.c
@@ -11,10 +11,10 @@
 
 #include <linux/leds-ti-lmu-common.h>
 
-const static int ramp_table[16] = {2048, 262000, 524000, 1049000, 2090000,
-				4194000, 8389000, 16780000, 33550000, 41940000,
-				50330000, 58720000, 67110000, 83880000,
-				100660000, 117440000};
+static const unsigned int ramp_table[16] = {2048, 262000, 524000, 1049000,
+				2090000, 4194000, 8389000, 16780000, 33550000,
+				41940000, 50330000, 58720000, 67110000,
+				83880000, 100660000, 117440000};
 
 static int ti_lmu_common_update_brightness(struct ti_lmu_bank *lmu_bank,
 					   int brightness)
@@ -54,7 +54,7 @@ int ti_lmu_common_set_brightness(struct ti_lmu_bank *lmu_bank, int brightness)
 }
 EXPORT_SYMBOL(ti_lmu_common_set_brightness);
 
-static int ti_lmu_common_convert_ramp_to_index(unsigned int usec)
+static unsigned int ti_lmu_common_convert_ramp_to_index(unsigned int usec)
 {
 	int size = ARRAY_SIZE(ramp_table);
 	int i;
@@ -78,7 +78,7 @@ static int ti_lmu_common_convert_ramp_to_index(unsigned int usec)
 		}
 	}
 
-	return -EINVAL;
+	return 0;
 }
 
 int ti_lmu_common_set_ramp(struct ti_lmu_bank *lmu_bank)
@@ -94,9 +94,6 @@ int ti_lmu_common_set_ramp(struct ti_lmu_bank *lmu_bank)
 		ramp_down = ti_lmu_common_convert_ramp_to_index(lmu_bank->ramp_down_usec);
 	}
 
-	if (ramp_up < 0 || ramp_down < 0)
-		return -EINVAL;
-
 	ramp = (ramp_up << 4) | ramp_down;
 
 	return regmap_write(regmap, lmu_bank->runtime_ramp_reg, ramp);
diff --git a/drivers/leds/leds.h b/drivers/leds/leds.h
index 47b229469069..0b577cece8f7 100644
--- a/drivers/leds/leds.h
+++ b/drivers/leds/leds.h
@@ -27,5 +27,6 @@ void led_set_brightness_nosleep(struct led_classdev *led_cdev,
 extern struct rw_semaphore leds_list_lock;
 extern struct list_head leds_list;
 extern struct list_head trigger_list;
+extern const char * const led_colors[LED_COLOR_ID_MAX];
 
 #endif	/* __LEDS_H_INCLUDED */
diff --git a/drivers/leds/trigger/ledtrig-gpio.c b/drivers/leds/trigger/ledtrig-gpio.c
index 33cc99a1a16a..dc64679b1a92 100644
--- a/drivers/leds/trigger/ledtrig-gpio.c
+++ b/drivers/leds/trigger/ledtrig-gpio.c
@@ -131,10 +131,10 @@ static ssize_t gpio_trig_gpio_store(struct device *dev,
 	if (gpio_data->gpio == gpio)
 		return n;
 
-	if (!gpio) {
-		if (gpio_data->gpio != 0)
+	if (!gpio_is_valid(gpio)) {
+		if (gpio_is_valid(gpio_data->gpio))
 			free_irq(gpio_to_irq(gpio_data->gpio), led);
-		gpio_data->gpio = 0;
+		gpio_data->gpio = gpio;
 		return n;
 	}
 
@@ -144,7 +144,7 @@ static ssize_t gpio_trig_gpio_store(struct device *dev,
 	if (ret) {
 		dev_err(dev, "request_irq failed with error %d\n", ret);
 	} else {
-		if (gpio_data->gpio != 0)
+		if (gpio_is_valid(gpio_data->gpio))
 			free_irq(gpio_to_irq(gpio_data->gpio), led);
 		gpio_data->gpio = gpio;
 		/* After changing the GPIO, we need to update the LED. */
@@ -172,6 +172,8 @@ static int gpio_trig_activate(struct led_classdev *led)
 		return -ENOMEM;
 
 	gpio_data->led = led;
+	gpio_data->gpio = -ENOENT;
+
 	led_set_trigger_data(led, gpio_data);
 
 	return 0;
@@ -181,7 +183,7 @@ static void gpio_trig_deactivate(struct led_classdev *led)
 {
 	struct gpio_trig_data *gpio_data = led_get_trigger_data(led);
 
-	if (gpio_data->gpio != 0)
+	if (gpio_is_valid(gpio_data->gpio))
 		free_irq(gpio_to_irq(gpio_data->gpio), led);
 	kfree(gpio_data);
 }
diff --git a/drivers/mfd/altera-sysmgr.c b/drivers/mfd/altera-sysmgr.c
index 2ee14d8a6d31..d2a13a547a3c 100644
--- a/drivers/mfd/altera-sysmgr.c
+++ b/drivers/mfd/altera-sysmgr.c
@@ -88,16 +88,6 @@ static struct regmap_config altr_sysmgr_regmap_cfg = {
 };
 
 /**
- * sysmgr_match_phandle
- * Matching function used by driver_find_device().
- * Return: True if match is found, otherwise false.
- */
-static int sysmgr_match_phandle(struct device *dev, const void *data)
-{
-	return dev->of_node == (const struct device_node *)data;
-}
-
-/**
  * altr_sysmgr_regmap_lookup_by_phandle
  * Find the sysmgr previous configured in probe() and return regmap property.
  * Return: regmap if found or error if not found.
@@ -117,8 +107,8 @@ struct regmap *altr_sysmgr_regmap_lookup_by_phandle(struct device_node *np,
 	if (!sysmgr_np)
 		return ERR_PTR(-ENODEV);
 
-	dev = driver_find_device(&altr_sysmgr_driver.driver, NULL,
-				 (void *)sysmgr_np, sysmgr_match_phandle);
+	dev = driver_find_device_by_of_node(&altr_sysmgr_driver.driver,
+					    (void *)sysmgr_np);
 	of_node_put(sysmgr_np);
 	if (!dev)
 		return ERR_PTR(-EPROBE_DEFER);
diff --git a/drivers/misc/mei/main.c b/drivers/misc/mei/main.c
index f894d1f8a53e..7310b476323c 100644
--- a/drivers/misc/mei/main.c
+++ b/drivers/misc/mei/main.c
@@ -858,13 +858,6 @@ static ssize_t dev_state_show(struct device *device,
 }
 static DEVICE_ATTR_RO(dev_state);
 
-static int match_devt(struct device *dev, const void *data)
-{
-	const dev_t *devt = data;
-
-	return dev->devt == *devt;
-}
-
 /**
  * dev_set_devstate: set to new device state and notify sysfs file.
  *
@@ -880,7 +873,7 @@ void mei_set_devstate(struct mei_device *dev, enum mei_dev_state state)
 
 	dev->dev_state = state;
 
-	clsdev = class_find_device(mei_class, NULL, &dev->cdev.dev, match_devt);
+	clsdev = class_find_device_by_devt(mei_class, dev->cdev.dev);
 	if (clsdev) {
 		sysfs_notify(&clsdev->kobj, NULL, "dev_state");
 		put_device(clsdev);
diff --git a/drivers/mux/core.c b/drivers/mux/core.c
index d1271c1ee23c..1fb22388e7e0 100644
--- a/drivers/mux/core.c
+++ b/drivers/mux/core.c
@@ -405,17 +405,12 @@ int mux_control_deselect(struct mux_control *mux)
 }
 EXPORT_SYMBOL_GPL(mux_control_deselect);
 
-static int of_dev_node_match(struct device *dev, const void *data)
-{
-	return dev->of_node == data;
-}
-
 /* Note this function returns a reference to the mux_chip dev. */
 static struct mux_chip *of_find_mux_chip_by_node(struct device_node *np)
 {
 	struct device *dev;
 
-	dev = class_find_device(&mux_class, NULL, np, of_dev_node_match);
+	dev = class_find_device_by_of_node(&mux_class, np);
 
 	return dev ? to_mux_chip(dev) : NULL;
 }
diff --git a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_misc.c b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_misc.c
index bb6586d0e5af..ed3829ae4ef1 100644
--- a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_misc.c
+++ b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_misc.c
@@ -754,17 +754,11 @@ struct dsaf_misc_op *hns_misc_op_get(struct dsaf_device *dsaf_dev)
 	return (void *)misc_op;
 }
 
-static int hns_dsaf_dev_match(struct device *dev, const void *fwnode)
-{
-	return dev->fwnode == fwnode;
-}
-
 struct
 platform_device *hns_dsaf_find_platform_device(struct fwnode_handle *fwnode)
 {
 	struct device *dev;
 
-	dev = bus_find_device(&platform_bus_type, NULL,
-			      fwnode, hns_dsaf_dev_match);
+	dev = bus_find_device_by_fwnode(&platform_bus_type, fwnode);
 	return dev ? to_platform_device(dev) : NULL;
 }
diff --git a/drivers/net/phy/mdio_bus.c b/drivers/net/phy/mdio_bus.c
index bd04fe762056..ce940871331e 100644
--- a/drivers/net/phy/mdio_bus.c
+++ b/drivers/net/phy/mdio_bus.c
@@ -262,11 +262,6 @@ static struct class mdio_bus_class = {
 };
 
 #if IS_ENABLED(CONFIG_OF_MDIO)
-/* Helper function for of_mdio_find_bus */
-static int of_mdio_bus_match(struct device *dev, const void *mdio_bus_np)
-{
-	return dev->of_node == mdio_bus_np;
-}
 /**
  * of_mdio_find_bus - Given an mii_bus node, find the mii_bus.
  * @mdio_bus_np: Pointer to the mii_bus.
@@ -287,9 +282,7 @@ struct mii_bus *of_mdio_find_bus(struct device_node *mdio_bus_np)
 	if (!mdio_bus_np)
 		return NULL;
 
-	d = class_find_device(&mdio_bus_class, NULL,  mdio_bus_np,
-			      of_mdio_bus_match);
-
+	d = class_find_device_by_of_node(&mdio_bus_class, mdio_bus_np);
 	return d ? to_mii_bus(d) : NULL;
 }
 EXPORT_SYMBOL(of_mdio_find_bus);
diff --git a/drivers/nvmem/core.c b/drivers/nvmem/core.c
index ac5d945be88a..057d1ff87d5d 100644
--- a/drivers/nvmem/core.c
+++ b/drivers/nvmem/core.c
@@ -76,11 +76,6 @@ static struct bus_type nvmem_bus_type = {
 	.name		= "nvmem",
 };
 
-static int of_nvmem_match(struct device *dev, const void *nvmem_np)
-{
-	return dev->of_node == nvmem_np;
-}
-
 static struct nvmem_device *of_nvmem_find(struct device_node *nvmem_np)
 {
 	struct device *d;
@@ -88,7 +83,7 @@ static struct nvmem_device *of_nvmem_find(struct device_node *nvmem_np)
 	if (!nvmem_np)
 		return NULL;
 
-	d = bus_find_device(&nvmem_bus_type, NULL, nvmem_np, of_nvmem_match);
+	d = bus_find_device_by_of_node(&nvmem_bus_type, nvmem_np);
 
 	if (!d)
 		return NULL;
diff --git a/drivers/of/of_mdio.c b/drivers/of/of_mdio.c
index 44f53496cab1..000b95787df1 100644
--- a/drivers/of/of_mdio.c
+++ b/drivers/of/of_mdio.c
@@ -280,12 +280,6 @@ unregister:
 }
 EXPORT_SYMBOL(of_mdiobus_register);
 
-/* Helper function for of_phy_find_device */
-static int of_phy_match(struct device *dev, const void *phy_np)
-{
-	return dev->of_node == phy_np;
-}
-
 /**
  * of_phy_find_device - Give a PHY node, find the phy_device
  * @phy_np: Pointer to the phy's device tree node
@@ -301,7 +295,7 @@ struct phy_device *of_phy_find_device(struct device_node *phy_np)
 	if (!phy_np)
 		return NULL;
 
-	d = bus_find_device(&mdio_bus_type, NULL, phy_np, of_phy_match);
+	d = bus_find_device_by_of_node(&mdio_bus_type, phy_np);
 	if (d) {
 		mdiodev = to_mdio_device(d);
 		if (mdiodev->flags & MDIO_DEVICE_FLAG_PHY)
diff --git a/drivers/of/platform.c b/drivers/of/platform.c
index 7801e25e6895..b47a2292fe8e 100644
--- a/drivers/of/platform.c
+++ b/drivers/of/platform.c
@@ -37,11 +37,6 @@ static const struct of_device_id of_skipped_node_table[] = {
 	{} /* Empty terminated list */
 };
 
-static int of_dev_node_match(struct device *dev, const void *data)
-{
-	return dev->of_node == data;
-}
-
 /**
  * of_find_device_by_node - Find the platform_device associated with a node
  * @np: Pointer to device tree node
@@ -55,7 +50,7 @@ struct platform_device *of_find_device_by_node(struct device_node *np)
 {
 	struct device *dev;
 
-	dev = bus_find_device(&platform_bus_type, NULL, np, of_dev_node_match);
+	dev = bus_find_device_by_of_node(&platform_bus_type, np);
 	return dev ? to_platform_device(dev) : NULL;
 }
 EXPORT_SYMBOL(of_find_device_by_node);
diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
index a3c7338fad86..dbeeb385fb9f 100644
--- a/drivers/pci/probe.c
+++ b/drivers/pci/probe.c
@@ -64,11 +64,6 @@ static struct resource *get_pci_domain_busn_res(int domain_nr)
 	return &r->res;
 }
 
-static int find_anything(struct device *dev, const void *data)
-{
-	return 1;
-}
-
 /*
  * Some device drivers need know if PCI is initiated.
  * Basically, we think PCI is not initiated when there
@@ -79,7 +74,7 @@ int no_pci_devices(void)
 	struct device *dev;
 	int no_devices;
 
-	dev = bus_find_device(&pci_bus_type, NULL, NULL, find_anything);
+	dev = bus_find_next_device(&pci_bus_type, NULL);
 	no_devices = (dev == NULL);
 	put_device(dev);
 	return no_devices;
diff --git a/drivers/regulator/of_regulator.c b/drivers/regulator/of_regulator.c
index 9112faa6a9a0..afefb29ce1b0 100644
--- a/drivers/regulator/of_regulator.c
+++ b/drivers/regulator/of_regulator.c
@@ -462,16 +462,11 @@ error:
 	return NULL;
 }
 
-static int of_node_match(struct device *dev, const void *data)
-{
-	return dev->of_node == data;
-}
-
 struct regulator_dev *of_find_regulator_by_node(struct device_node *np)
 {
 	struct device *dev;
 
-	dev = class_find_device(&regulator_class, NULL, np, of_node_match);
+	dev = class_find_device_by_of_node(&regulator_class, np);
 
 	return dev ? dev_to_rdev(dev) : NULL;
 }
diff --git a/drivers/rtc/interface.c b/drivers/rtc/interface.c
index 72b7ddc43116..c93ef33b01d3 100644
--- a/drivers/rtc/interface.c
+++ b/drivers/rtc/interface.c
@@ -663,21 +663,12 @@ void rtc_update_irq(struct rtc_device *rtc,
 }
 EXPORT_SYMBOL_GPL(rtc_update_irq);
 
-static int __rtc_match(struct device *dev, const void *data)
-{
-	const char *name = data;
-
-	if (strcmp(dev_name(dev), name) == 0)
-		return 1;
-	return 0;
-}
-
 struct rtc_device *rtc_class_open(const char *name)
 {
 	struct device *dev;
 	struct rtc_device *rtc = NULL;
 
-	dev = class_find_device(rtc_class, NULL, name, __rtc_match);
+	dev = class_find_device_by_name(rtc_class, name);
 	if (dev)
 		rtc = to_rtc_device(dev);
 
diff --git a/drivers/s390/cio/ccwgroup.c b/drivers/s390/cio/ccwgroup.c
index c522e9313c50..0005ec9285aa 100644
--- a/drivers/s390/cio/ccwgroup.c
+++ b/drivers/s390/cio/ccwgroup.c
@@ -581,11 +581,6 @@ int ccwgroup_driver_register(struct ccwgroup_driver *cdriver)
 }
 EXPORT_SYMBOL(ccwgroup_driver_register);
 
-static int __ccwgroup_match_all(struct device *dev, const void *data)
-{
-	return 1;
-}
-
 /**
  * ccwgroup_driver_unregister() - deregister a ccw group driver
  * @cdriver: driver to be deregistered
@@ -597,8 +592,7 @@ void ccwgroup_driver_unregister(struct ccwgroup_driver *cdriver)
 	struct device *dev;
 
 	/* We don't want ccwgroup devices to live longer than their driver. */
-	while ((dev = driver_find_device(&cdriver->driver, NULL, NULL,
-					 __ccwgroup_match_all))) {
+	while ((dev = driver_find_next_device(&cdriver->driver, NULL))) {
 		struct ccwgroup_device *gdev = to_ccwgroupdev(dev);
 
 		ccwgroup_ungroup(gdev);
@@ -608,13 +602,6 @@ void ccwgroup_driver_unregister(struct ccwgroup_driver *cdriver)
 }
 EXPORT_SYMBOL(ccwgroup_driver_unregister);
 
-static int __ccwgroupdev_check_busid(struct device *dev, const void *id)
-{
-	const char *bus_id = id;
-
-	return (strcmp(bus_id, dev_name(dev)) == 0);
-}
-
 /**
  * get_ccwgroupdev_by_busid() - obtain device from a bus id
  * @gdrv: driver the device is owned by
@@ -631,8 +618,7 @@ struct ccwgroup_device *get_ccwgroupdev_by_busid(struct ccwgroup_driver *gdrv,
 {
 	struct device *dev;
 
-	dev = driver_find_device(&gdrv->driver, NULL, bus_id,
-				 __ccwgroupdev_check_busid);
+	dev = driver_find_device_by_name(&gdrv->driver, bus_id);
 
 	return dev ? to_ccwgroupdev(dev) : NULL;
 }
diff --git a/drivers/s390/cio/device.c b/drivers/s390/cio/device.c
index c421899be20f..131430bd48d9 100644
--- a/drivers/s390/cio/device.c
+++ b/drivers/s390/cio/device.c
@@ -1695,18 +1695,6 @@ int ccw_device_force_console(struct ccw_device *cdev)
 EXPORT_SYMBOL_GPL(ccw_device_force_console);
 #endif
 
-/*
- * get ccw_device matching the busid, but only if owned by cdrv
- */
-static int
-__ccwdev_check_busid(struct device *dev, const void *id)
-{
-	const char *bus_id = id;
-
-	return (strcmp(bus_id, dev_name(dev)) == 0);
-}
-
-
 /**
  * get_ccwdev_by_busid() - obtain device from a bus id
  * @cdrv: driver the device is owned by
@@ -1723,8 +1711,7 @@ struct ccw_device *get_ccwdev_by_busid(struct ccw_driver *cdrv,
 {
 	struct device *dev;
 
-	dev = driver_find_device(&cdrv->driver, NULL, (void *)bus_id,
-				 __ccwdev_check_busid);
+	dev = driver_find_device_by_name(&cdrv->driver, bus_id);
 
 	return dev ? to_ccwdev(dev) : NULL;
 }
diff --git a/drivers/s390/crypto/zcrypt_api.c b/drivers/s390/crypto/zcrypt_api.c
index 563801427fe4..45bdb47f84c1 100644
--- a/drivers/s390/crypto/zcrypt_api.c
+++ b/drivers/s390/crypto/zcrypt_api.c
@@ -134,18 +134,6 @@ struct zcdn_device {
 static int zcdn_create(const char *name);
 static int zcdn_destroy(const char *name);
 
-/* helper function, matches the name for find_zcdndev_by_name() */
-static int __match_zcdn_name(struct device *dev, const void *data)
-{
-	return strcmp(dev_name(dev), (const char *)data) == 0;
-}
-
-/* helper function, matches the devt value for find_zcdndev_by_devt() */
-static int __match_zcdn_devt(struct device *dev, const void *data)
-{
-	return dev->devt == *((dev_t *) data);
-}
-
 /*
  * Find zcdn device by name.
  * Returns reference to the zcdn device which needs to be released
@@ -153,10 +141,7 @@ static int __match_zcdn_devt(struct device *dev, const void *data)
  */
 static inline struct zcdn_device *find_zcdndev_by_name(const char *name)
 {
-	struct device *dev =
-		class_find_device(zcrypt_class, NULL,
-				  (void *) name,
-				  __match_zcdn_name);
+	struct device *dev = class_find_device_by_name(zcrypt_class, name);
 
 	return dev ? to_zcdn_dev(dev) : NULL;
 }
@@ -168,10 +153,7 @@ static inline struct zcdn_device *find_zcdndev_by_name(const char *name)
  */
 static inline struct zcdn_device *find_zcdndev_by_devt(dev_t devt)
 {
-	struct device *dev =
-		class_find_device(zcrypt_class, NULL,
-				  (void *) &devt,
-				  __match_zcdn_devt);
+	struct device *dev = class_find_device_by_devt(zcrypt_class, devt);
 
 	return dev ? to_zcdn_dev(dev) : NULL;
 }
diff --git a/drivers/scsi/scsi_proc.c b/drivers/scsi/scsi_proc.c
index c074631086a4..5b313226f11c 100644
--- a/drivers/scsi/scsi_proc.c
+++ b/drivers/scsi/scsi_proc.c
@@ -372,15 +372,10 @@ static ssize_t proc_scsi_write(struct file *file, const char __user *buf,
 	return err;
 }
 
-static int always_match(struct device *dev, const void *data)
-{
-	return 1;
-}
-
 static inline struct device *next_scsi_device(struct device *start)
 {
-	struct device *next = bus_find_device(&scsi_bus_type, start, NULL,
-					      always_match);
+	struct device *next = bus_find_next_device(&scsi_bus_type, start);
+
 	put_device(start);
 	return next;
 }
diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c
index f8b4654a57d3..f9502dbbb5c1 100644
--- a/drivers/spi/spi.c
+++ b/drivers/spi/spi.c
@@ -3655,37 +3655,25 @@ EXPORT_SYMBOL_GPL(spi_write_then_read);
 /*-------------------------------------------------------------------------*/
 
 #if IS_ENABLED(CONFIG_OF)
-static int __spi_of_device_match(struct device *dev, const void *data)
-{
-	return dev->of_node == data;
-}
-
 /* must call put_device() when done with returned spi_device device */
 struct spi_device *of_find_spi_device_by_node(struct device_node *node)
 {
-	struct device *dev = bus_find_device(&spi_bus_type, NULL, node,
-						__spi_of_device_match);
+	struct device *dev = bus_find_device_by_of_node(&spi_bus_type, node);
+
 	return dev ? to_spi_device(dev) : NULL;
 }
 EXPORT_SYMBOL_GPL(of_find_spi_device_by_node);
 #endif /* IS_ENABLED(CONFIG_OF) */
 
 #if IS_ENABLED(CONFIG_OF_DYNAMIC)
-static int __spi_of_controller_match(struct device *dev, const void *data)
-{
-	return dev->of_node == data;
-}
-
 /* the spi controllers are not using spi_bus, so we find it with another way */
 static struct spi_controller *of_find_spi_controller_by_node(struct device_node *node)
 {
 	struct device *dev;
 
-	dev = class_find_device(&spi_master_class, NULL, node,
-				__spi_of_controller_match);
+	dev = class_find_device_by_of_node(&spi_master_class, node);
 	if (!dev && IS_ENABLED(CONFIG_SPI_SLAVE))
-		dev = class_find_device(&spi_slave_class, NULL, node,
-					__spi_of_controller_match);
+		dev = class_find_device_by_of_node(&spi_slave_class, node);
 	if (!dev)
 		return NULL;
 
@@ -3756,11 +3744,6 @@ static int spi_acpi_controller_match(struct device *dev, const void *data)
 	return ACPI_COMPANION(dev->parent) == data;
 }
 
-static int spi_acpi_device_match(struct device *dev, const void *data)
-{
-	return ACPI_COMPANION(dev) == data;
-}
-
 static struct spi_controller *acpi_spi_find_controller_by_adev(struct acpi_device *adev)
 {
 	struct device *dev;
@@ -3780,8 +3763,7 @@ static struct spi_device *acpi_spi_find_device_by_adev(struct acpi_device *adev)
 {
 	struct device *dev;
 
-	dev = bus_find_device(&spi_bus_type, NULL, adev, spi_acpi_device_match);
-
+	dev = bus_find_device_by_acpi_dev(&spi_bus_type, adev);
 	return dev ? to_spi_device(dev) : NULL;
 }
 
diff --git a/drivers/tty/tty_io.c b/drivers/tty/tty_io.c
index 566728fbaf3c..802c1210558f 100644
--- a/drivers/tty/tty_io.c
+++ b/drivers/tty/tty_io.c
@@ -2952,17 +2952,11 @@ void do_SAK(struct tty_struct *tty)
 
 EXPORT_SYMBOL(do_SAK);
 
-static int dev_match_devt(struct device *dev, const void *data)
-{
-	const dev_t *devt = data;
-	return dev->devt == *devt;
-}
-
 /* Must put_device() after it's unused! */
 static struct device *tty_get_device(struct tty_struct *tty)
 {
 	dev_t devt = tty_devnum(tty);
-	return class_find_device(tty_class, NULL, &devt, dev_match_devt);
+	return class_find_device_by_devt(tty_class, devt);
 }
 
 
diff --git a/drivers/usb/core/devio.c b/drivers/usb/core/devio.c
index 9063ede411ae..e3696601e43b 100644
--- a/drivers/usb/core/devio.c
+++ b/drivers/usb/core/devio.c
@@ -942,17 +942,11 @@ error:
 	return ret;
 }
 
-static int match_devt(struct device *dev, const void *data)
-{
-	return dev->devt == (dev_t)(unsigned long)(void *)data;
-}
-
 static struct usb_device *usbdev_lookup_by_devt(dev_t devt)
 {
 	struct device *dev;
 
-	dev = bus_find_device(&usb_bus_type, NULL,
-			      (void *) (unsigned long) devt, match_devt);
+	dev = bus_find_device_by_devt(&usb_bus_type, devt);
 	if (!dev)
 		return NULL;
 	return to_usb_device(dev);
diff --git a/drivers/usb/roles/class.c b/drivers/usb/roles/class.c
index 86defca6623e..0526efbc4922 100644
--- a/drivers/usb/roles/class.c
+++ b/drivers/usb/roles/class.c
@@ -85,16 +85,6 @@ enum usb_role usb_role_switch_get_role(struct usb_role_switch *sw)
 }
 EXPORT_SYMBOL_GPL(usb_role_switch_get_role);
 
-static int switch_fwnode_match(struct device *dev, const void *fwnode)
-{
-	return dev_fwnode(dev) == fwnode;
-}
-
-static int switch_name_match(struct device *dev, const void *name)
-{
-	return !strcmp((const char *)name, dev_name(dev));
-}
-
 static void *usb_role_switch_match(struct device_connection *con, int ep,
 				   void *data)
 {
@@ -104,11 +94,9 @@ static void *usb_role_switch_match(struct device_connection *con, int ep,
 		if (con->id && !fwnode_property_present(con->fwnode, con->id))
 			return NULL;
 
-		dev = class_find_device(role_class, NULL, con->fwnode,
-					switch_fwnode_match);
+		dev = class_find_device_by_fwnode(role_class, con->fwnode);
 	} else {
-		dev = class_find_device(role_class, NULL, con->endpoint[ep],
-					switch_name_match);
+		dev = class_find_device_by_name(role_class, con->endpoint[ep]);
 	}
 
 	return dev ? to_role_switch(dev) : ERR_PTR(-EPROBE_DEFER);
diff --git a/drivers/usb/typec/class.c b/drivers/usb/typec/class.c
index a18285a990a8..94a3eda62add 100644
--- a/drivers/usb/typec/class.c
+++ b/drivers/usb/typec/class.c
@@ -205,16 +205,6 @@ static void typec_altmode_put_partner(struct altmode *altmode)
 	put_device(&adev->dev);
 }
 
-static int typec_port_fwnode_match(struct device *dev, const void *fwnode)
-{
-	return dev_fwnode(dev) == fwnode;
-}
-
-static int typec_port_name_match(struct device *dev, const void *name)
-{
-	return !strcmp((const char *)name, dev_name(dev));
-}
-
 static void *typec_port_match(struct device_connection *con, int ep, void *data)
 {
 	struct device *dev;
@@ -224,11 +214,9 @@ static void *typec_port_match(struct device_connection *con, int ep, void *data)
 	 * we need to return ERR_PTR(-PROBE_DEFER) when there is no device.
 	 */
 	if (con->fwnode)
-		return class_find_device(typec_class, NULL, con->fwnode,
-					 typec_port_fwnode_match);
+		return class_find_device_by_fwnode(typec_class, con->fwnode);
 
-	dev = class_find_device(typec_class, NULL, con->endpoint[ep],
-				typec_port_name_match);
+	dev = class_find_device_by_name(typec_class, con->endpoint[ep]);
 
 	return dev ? dev : ERR_PTR(-EPROBE_DEFER);
 }