Merge tag 'driver-core-4.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

Pull driver core update from Greg KH:
 "Here is the "big" driver core update for 4.14-rc1.

  It's really not all that big, the largest thing here being some
  firmware tests to help ensure that that crazy api is working properly.

  There's also a new uevent for when a driver is bound or unbound from a
  device, fixing a hole in the driver model that's been there since the
  very beginning. Many thanks to Dmitry for being persistent and
  pointing out how wrong I was about this all along :)

  Patches for the new uevents are already in the systemd tree, if people
  want to play around with them.

  Otherwise just a number of other small api changes and updates here,
  nothing major. All of these patches have been in linux-next for a
  while with no reported issues"

* tag 'driver-core-4.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (28 commits)
  driver core: bus: Fix a potential double free
  Do not disable driver and bus shutdown hook when class shutdown hook is set.
  base: topology: constify attribute_group structures.
  base: Convert to using %pOF instead of full_name
  kernfs: Clarify lockdep name for kn->count
  fbdev: uvesafb: remove DRIVER_ATTR() usage
  xen: xen-pciback: remove DRIVER_ATTR() usage
  driver core: Document struct device:dma_ops
  mod_devicetable: Remove excess description from structured comment
  test_firmware: add batched firmware tests
  firmware: enable a debug print for batched requests
  firmware: define pr_fmt
  firmware: send -EINTR on signal abort on fallback mechanism
  test_firmware: add test case for SIGCHLD on sync fallback
  initcall_debug: add deferred probe times
  Input: axp20x-pek - switch to using devm_device_add_group()
  Input: synaptics_rmi4 - use devm_device_add_group() for attributes in F01
  Input: gpio_keys - use devm_device_add_group() for attributes
  driver core: add devm_device_add_group() and friends
  driver core: add device_{add|remove}_group() helpers
  ...

13 files changed, 254 insertions, 134 deletions

diff --git a/drivers/base/arch_topology.c b/drivers/base/arch_topology.c
index d1c33a85059e..41be9ff7d70a 100644
--- a/drivers/base/arch_topology.c
+++ b/drivers/base/arch_topology.c
@@ -41,8 +41,7 @@ static ssize_t cpu_capacity_show(struct device *dev,
 {
 	struct cpu *cpu = container_of(dev, struct cpu, dev);
 
-	return sprintf(buf, "%lu\n",
-			topology_get_cpu_scale(NULL, cpu->dev.id));
+	return sprintf(buf, "%lu\n", topology_get_cpu_scale(NULL, cpu->dev.id));
 }
 
 static ssize_t cpu_capacity_store(struct device *dev,
@@ -96,14 +95,21 @@ subsys_initcall(register_cpu_capacity_sysctl);
 
 static u32 capacity_scale;
 static u32 *raw_capacity;
-static bool cap_parsing_failed;
+
+static int __init free_raw_capacity(void)
+{
+	kfree(raw_capacity);
+	raw_capacity = NULL;
+
+	return 0;
+}
 
 void topology_normalize_cpu_scale(void)
 {
 	u64 capacity;
 	int cpu;
 
-	if (!raw_capacity || cap_parsing_failed)
+	if (!raw_capacity)
 		return;
 
 	pr_debug("cpu_capacity: capacity_scale=%u\n", capacity_scale);
@@ -120,16 +126,16 @@ void topology_normalize_cpu_scale(void)
 	mutex_unlock(&cpu_scale_mutex);
 }
 
-int __init topology_parse_cpu_capacity(struct device_node *cpu_node, int cpu)
+bool __init topology_parse_cpu_capacity(struct device_node *cpu_node, int cpu)
 {
-	int ret = 1;
+	static bool cap_parsing_failed;
+	int ret;
 	u32 cpu_capacity;
 
 	if (cap_parsing_failed)
-		return !ret;
+		return false;
 
-	ret = of_property_read_u32(cpu_node,
-				   "capacity-dmips-mhz",
+	ret = of_property_read_u32(cpu_node, "capacity-dmips-mhz",
 				   &cpu_capacity);
 	if (!ret) {
 		if (!raw_capacity) {
@@ -139,21 +145,21 @@ int __init topology_parse_cpu_capacity(struct device_node *cpu_node, int cpu)
 			if (!raw_capacity) {
 				pr_err("cpu_capacity: failed to allocate memory for raw capacities\n");
 				cap_parsing_failed = true;
-				return 0;
+				return false;
 			}
 		}
 		capacity_scale = max(cpu_capacity, capacity_scale);
 		raw_capacity[cpu] = cpu_capacity;
-		pr_debug("cpu_capacity: %s cpu_capacity=%u (raw)\n",
-			cpu_node->full_name, raw_capacity[cpu]);
+		pr_debug("cpu_capacity: %pOF cpu_capacity=%u (raw)\n",
+			cpu_node, raw_capacity[cpu]);
 	} else {
 		if (raw_capacity) {
-			pr_err("cpu_capacity: missing %s raw capacity\n",
-				cpu_node->full_name);
+			pr_err("cpu_capacity: missing %pOF raw capacity\n",
+				cpu_node);
 			pr_err("cpu_capacity: partial information: fallback to 1024 for all CPUs\n");
 		}
 		cap_parsing_failed = true;
-		kfree(raw_capacity);
+		free_raw_capacity();
 	}
 
 	return !ret;
@@ -161,7 +167,6 @@ int __init topology_parse_cpu_capacity(struct device_node *cpu_node, int cpu)
 
 #ifdef CONFIG_CPU_FREQ
 static cpumask_var_t cpus_to_visit;
-static bool cap_parsing_done;
 static void parsing_done_workfn(struct work_struct *work);
 static DECLARE_WORK(parsing_done_work, parsing_done_workfn);
 
@@ -173,30 +178,31 @@ init_cpu_capacity_callback(struct notifier_block *nb,
 	struct cpufreq_policy *policy = data;
 	int cpu;
 
-	if (cap_parsing_failed || cap_parsing_done)
+	if (!raw_capacity)
 		return 0;
 
-	switch (val) {
-	case CPUFREQ_NOTIFY:
-		pr_debug("cpu_capacity: init cpu capacity for CPUs [%*pbl] (to_visit=%*pbl)\n",
-				cpumask_pr_args(policy->related_cpus),
-				cpumask_pr_args(cpus_to_visit));
-		cpumask_andnot(cpus_to_visit,
-			       cpus_to_visit,
-			       policy->related_cpus);
-		for_each_cpu(cpu, policy->related_cpus) {
-			raw_capacity[cpu] = topology_get_cpu_scale(NULL, cpu) *
-					    policy->cpuinfo.max_freq / 1000UL;
-			capacity_scale = max(raw_capacity[cpu], capacity_scale);
-		}
-		if (cpumask_empty(cpus_to_visit)) {
-			topology_normalize_cpu_scale();
-			kfree(raw_capacity);
-			pr_debug("cpu_capacity: parsing done\n");
-			cap_parsing_done = true;
-			schedule_work(&parsing_done_work);
-		}
+	if (val != CPUFREQ_NOTIFY)
+		return 0;
+
+	pr_debug("cpu_capacity: init cpu capacity for CPUs [%*pbl] (to_visit=%*pbl)\n",
+		 cpumask_pr_args(policy->related_cpus),
+		 cpumask_pr_args(cpus_to_visit));
+
+	cpumask_andnot(cpus_to_visit, cpus_to_visit, policy->related_cpus);
+
+	for_each_cpu(cpu, policy->related_cpus) {
+		raw_capacity[cpu] = topology_get_cpu_scale(NULL, cpu) *
+				    policy->cpuinfo.max_freq / 1000UL;
+		capacity_scale = max(raw_capacity[cpu], capacity_scale);
+	}
+
+	if (cpumask_empty(cpus_to_visit)) {
+		topology_normalize_cpu_scale();
+		free_raw_capacity();
+		pr_debug("cpu_capacity: parsing done\n");
+		schedule_work(&parsing_done_work);
 	}
+
 	return 0;
 }
 
@@ -233,11 +239,5 @@ static void parsing_done_workfn(struct work_struct *work)
 }
 
 #else
-static int __init free_raw_capacity(void)
-{
-	kfree(raw_capacity);
-
-	return 0;
-}
 core_initcall(free_raw_capacity);
 #endif
diff --git a/drivers/base/base.h b/drivers/base/base.h
index e19b1008e5fb..539432a14b5c 100644
--- a/drivers/base/base.h
+++ b/drivers/base/base.h
@@ -126,11 +126,6 @@ extern int driver_add_groups(struct device_driver *drv,
 extern void driver_remove_groups(struct device_driver *drv,
 				 const struct attribute_group **groups);
 
-extern int device_add_groups(struct device *dev,
-			     const struct attribute_group **groups);
-extern void device_remove_groups(struct device *dev,
-				 const struct attribute_group **groups);
-
 extern char *make_class_name(const char *name, struct kobject *kobj);
 
 extern int devres_release_all(struct device *dev);
diff --git a/drivers/base/bus.c b/drivers/base/bus.c
index e162c9a789ba..22a64fd3309b 100644
--- a/drivers/base/bus.c
+++ b/drivers/base/bus.c
@@ -698,7 +698,7 @@ int bus_add_driver(struct device_driver *drv)
 
 out_unregister:
 	kobject_put(&priv->kobj);
-	kfree(drv->p);
+	/* drv->p is freed in driver_release()  */
 	drv->p = NULL;
 out_put_bus:
 	bus_put(bus);
diff --git a/drivers/base/core.c b/drivers/base/core.c
index 755451f684bc..12ebd055724c 100644
--- a/drivers/base/core.c
+++ b/drivers/base/core.c
@@ -1023,12 +1023,144 @@ int device_add_groups(struct device *dev, const struct attribute_group **groups)
 {
 	return sysfs_create_groups(&dev->kobj, groups);
 }
+EXPORT_SYMBOL_GPL(device_add_groups);
 
 void device_remove_groups(struct device *dev,
 			  const struct attribute_group **groups)
 {
 	sysfs_remove_groups(&dev->kobj, groups);
 }
+EXPORT_SYMBOL_GPL(device_remove_groups);
+
+union device_attr_group_devres {
+	const struct attribute_group *group;
+	const struct attribute_group **groups;
+};
+
+static int devm_attr_group_match(struct device *dev, void *res, void *data)
+{
+	return ((union device_attr_group_devres *)res)->group == data;
+}
+
+static void devm_attr_group_remove(struct device *dev, void *res)
+{
+	union device_attr_group_devres *devres = res;
+	const struct attribute_group *group = devres->group;
+
+	dev_dbg(dev, "%s: removing group %p\n", __func__, group);
+	sysfs_remove_group(&dev->kobj, group);
+}
+
+static void devm_attr_groups_remove(struct device *dev, void *res)
+{
+	union device_attr_group_devres *devres = res;
+	const struct attribute_group **groups = devres->groups;
+
+	dev_dbg(dev, "%s: removing groups %p\n", __func__, groups);
+	sysfs_remove_groups(&dev->kobj, groups);
+}
+
+/**
+ * devm_device_add_group - given a device, create a managed attribute group
+ * @dev:	The device to create the group for
+ * @grp:	The attribute group to create
+ *
+ * This function creates a group for the first time.  It will explicitly
+ * warn and error if any of the attribute files being created already exist.
+ *
+ * Returns 0 on success or error code on failure.
+ */
+int devm_device_add_group(struct device *dev, const struct attribute_group *grp)
+{
+	union device_attr_group_devres *devres;
+	int error;
+
+	devres = devres_alloc(devm_attr_group_remove,
+			      sizeof(*devres), GFP_KERNEL);
+	if (!devres)
+		return -ENOMEM;
+
+	error = sysfs_create_group(&dev->kobj, grp);
+	if (error) {
+		devres_free(devres);
+		return error;
+	}
+
+	devres->group = grp;
+	devres_add(dev, devres);
+	return 0;
+}
+EXPORT_SYMBOL_GPL(devm_device_add_group);
+
+/**
+ * devm_device_remove_group: remove a managed group from a device
+ * @dev:	device to remove the group from
+ * @grp:	group to remove
+ *
+ * This function removes a group of attributes from a device. The attributes
+ * previously have to have been created for this group, otherwise it will fail.
+ */
+void devm_device_remove_group(struct device *dev,
+			      const struct attribute_group *grp)
+{
+	WARN_ON(devres_release(dev, devm_attr_group_remove,
+			       devm_attr_group_match,
+			       /* cast away const */ (void *)grp));
+}
+EXPORT_SYMBOL_GPL(devm_device_remove_group);
+
+/**
+ * devm_device_add_groups - create a bunch of managed attribute groups
+ * @dev:	The device to create the group for
+ * @groups:	The attribute groups to create, NULL terminated
+ *
+ * This function creates a bunch of managed attribute groups.  If an error
+ * occurs when creating a group, all previously created groups will be
+ * removed, unwinding everything back to the original state when this
+ * function was called.  It will explicitly warn and error if any of the
+ * attribute files being created already exist.
+ *
+ * Returns 0 on success or error code from sysfs_create_group on failure.
+ */
+int devm_device_add_groups(struct device *dev,
+			   const struct attribute_group **groups)
+{
+	union device_attr_group_devres *devres;
+	int error;
+
+	devres = devres_alloc(devm_attr_groups_remove,
+			      sizeof(*devres), GFP_KERNEL);
+	if (!devres)
+		return -ENOMEM;
+
+	error = sysfs_create_groups(&dev->kobj, groups);
+	if (error) {
+		devres_free(devres);
+		return error;
+	}
+
+	devres->groups = groups;
+	devres_add(dev, devres);
+	return 0;
+}
+EXPORT_SYMBOL_GPL(devm_device_add_groups);
+
+/**
+ * devm_device_remove_groups - remove a list of managed groups
+ *
+ * @dev:	The device for the groups to be removed from
+ * @groups:	NULL terminated list of groups to be removed
+ *
+ * If groups is not NULL, remove the specified groups from the device.
+ */
+void devm_device_remove_groups(struct device *dev,
+			       const struct attribute_group **groups)
+{
+	WARN_ON(devres_release(dev, devm_attr_groups_remove,
+			       devm_attr_group_match,
+			       /* cast away const */ (void *)groups));
+}
+EXPORT_SYMBOL_GPL(devm_device_remove_groups);
 
 static int device_add_attrs(struct device *dev)
 {
@@ -2664,11 +2796,12 @@ void device_shutdown(void)
 		pm_runtime_get_noresume(dev);
 		pm_runtime_barrier(dev);
 
-		if (dev->class && dev->class->shutdown) {
+		if (dev->class && dev->class->shutdown_pre) {
 			if (initcall_debug)
-				dev_info(dev, "shutdown\n");
-			dev->class->shutdown(dev);
-		} else if (dev->bus && dev->bus->shutdown) {
+				dev_info(dev, "shutdown_pre\n");
+			dev->class->shutdown_pre(dev);
+		}
+		if (dev->bus && dev->bus->shutdown) {
 			if (initcall_debug)
 				dev_info(dev, "shutdown\n");
 			dev->bus->shutdown(dev);
diff --git a/drivers/base/dd.c b/drivers/base/dd.c
index 4882f06d12df..ad44b40fe284 100644
--- a/drivers/base/dd.c
+++ b/drivers/base/dd.c
@@ -20,6 +20,7 @@
 #include <linux/device.h>
 #include <linux/delay.h>
 #include <linux/dma-mapping.h>
+#include <linux/init.h>
 #include <linux/module.h>
 #include <linux/kthread.h>
 #include <linux/wait.h>
@@ -53,6 +54,7 @@ static DEFINE_MUTEX(deferred_probe_mutex);
 static LIST_HEAD(deferred_probe_pending_list);
 static LIST_HEAD(deferred_probe_active_list);
 static atomic_t deferred_trigger_count = ATOMIC_INIT(0);
+static bool initcalls_done;
 
 /*
  * In some cases, like suspend to RAM or hibernation, It might be reasonable
@@ -62,6 +64,26 @@ static atomic_t deferred_trigger_count = ATOMIC_INIT(0);
 static bool defer_all_probes;
 
 /*
+ * For initcall_debug, show the deferred probes executed in late_initcall
+ * processing.
+ */
+static void deferred_probe_debug(struct device *dev)
+{
+	ktime_t calltime, delta, rettime;
+	unsigned long long duration;
+
+	printk(KERN_DEBUG "deferred probe %s @ %i\n", dev_name(dev),
+	       task_pid_nr(current));
+	calltime = ktime_get();
+	bus_probe_device(dev);
+	rettime = ktime_get();
+	delta = ktime_sub(rettime, calltime);
+	duration = (unsigned long long) ktime_to_ns(delta) >> 10;
+	printk(KERN_DEBUG "deferred probe %s returned after %lld usecs\n",
+	       dev_name(dev), duration);
+}
+
+/*
  * deferred_probe_work_func() - Retry probing devices in the active list.
  */
 static void deferred_probe_work_func(struct work_struct *work)
@@ -106,7 +128,10 @@ static void deferred_probe_work_func(struct work_struct *work)
 		device_pm_unlock();
 
 		dev_dbg(dev, "Retrying from deferred list\n");
-		bus_probe_device(dev);
+		if (initcall_debug && !initcalls_done)
+			deferred_probe_debug(dev);
+		else
+			bus_probe_device(dev);
 
 		mutex_lock(&deferred_probe_mutex);
 
@@ -215,6 +240,7 @@ static int deferred_probe_initcall(void)
 	driver_deferred_probe_trigger();
 	/* Sort as many dependencies as possible before exiting initcalls */
 	flush_work(&deferred_probe_work);
+	initcalls_done = true;
 	return 0;
 }
 late_initcall(deferred_probe_initcall);
@@ -259,6 +285,8 @@ static void driver_bound(struct device *dev)
 	if (dev->bus)
 		blocking_notifier_call_chain(&dev->bus->p->bus_notifier,
 					     BUS_NOTIFY_BOUND_DRIVER, dev);
+
+	kobject_uevent(&dev->kobj, KOBJ_BIND);
 }
 
 static int driver_sysfs_add(struct device *dev)
@@ -848,6 +876,8 @@ static void __device_release_driver(struct device *dev, struct device *parent)
 			blocking_notifier_call_chain(&dev->bus->p->bus_notifier,
 						     BUS_NOTIFY_UNBOUND_DRIVER,
 						     dev);
+
+		kobject_uevent(&dev->kobj, KOBJ_UNBIND);
 	}
 }
 
diff --git a/drivers/base/firmware_class.c b/drivers/base/firmware_class.c
index bfbe1e154128..a5fb884a136d 100644
--- a/drivers/base/firmware_class.c
+++ b/drivers/base/firmware_class.c
@@ -7,6 +7,8 @@
  *
  */
 
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
 #include <linux/capability.h>
 #include <linux/device.h>
 #include <linux/module.h>
@@ -331,6 +333,7 @@ static struct firmware_buf *__fw_lookup_buf(const char *fw_name)
 	return NULL;
 }
 
+/* Returns 1 for batching firmware requests with the same name */
 static int fw_lookup_and_allocate_buf(const char *fw_name,
 				      struct firmware_cache *fwc,
 				      struct firmware_buf **buf, void *dbuf,
@@ -344,6 +347,7 @@ static int fw_lookup_and_allocate_buf(const char *fw_name,
 		kref_get(&tmp->ref);
 		spin_unlock(&fwc->lock);
 		*buf = tmp;
+		pr_debug("batched request - sharing the same struct firmware_buf and lookup for multiple requests\n");
 		return 1;
 	}
 	tmp = __allocate_fw_buf(fw_name, fwc, dbuf, size);
@@ -1085,9 +1089,12 @@ static int _request_firmware_load(struct firmware_priv *fw_priv,
 		mutex_unlock(&fw_lock);
 	}
 
-	if (fw_state_is_aborted(&buf->fw_st))
-		retval = -EAGAIN;
-	else if (buf->is_paged_buf && !buf->data)
+	if (fw_state_is_aborted(&buf->fw_st)) {
+		if (retval == -ERESTARTSYS)
+			retval = -EINTR;
+		else
+			retval = -EAGAIN;
+	} else if (buf->is_paged_buf && !buf->data)
 		retval = -ENOMEM;
 
 	device_del(f_dev);
diff --git a/drivers/base/topology.c b/drivers/base/topology.c
index d6ec1c546f5b..d936fcf9f1fb 100644
--- a/drivers/base/topology.c
+++ b/drivers/base/topology.c
@@ -105,7 +105,7 @@ static struct attribute *default_attrs[] = {
 	NULL
 };
 
-static struct attribute_group topology_attr_group = {
+static const struct attribute_group topology_attr_group = {
 	.attrs = default_attrs,
 	.name = "topology"
 };
diff --git a/drivers/char/tpm/tpm-chip.c b/drivers/char/tpm/tpm-chip.c
index 67ec9d3d04f5..0eca20c5a80c 100644
--- a/drivers/char/tpm/tpm-chip.c
+++ b/drivers/char/tpm/tpm-chip.c
@@ -164,14 +164,7 @@ static int tpm_class_shutdown(struct device *dev)
 		chip->ops = NULL;
 		up_write(&chip->ops_sem);
 	}
-	/* Allow bus- and device-specific code to run. Note: since chip->ops
-	 * is NULL, more-specific shutdown code will not be able to issue TPM
-	 * commands.
-	 */
-	if (dev->bus && dev->bus->shutdown)
-		dev->bus->shutdown(dev);
-	else if (dev->driver && dev->driver->shutdown)
-		dev->driver->shutdown(dev);
+
 	return 0;
 }
 
@@ -214,7 +207,7 @@ struct tpm_chip *tpm_chip_alloc(struct device *pdev,
 	device_initialize(&chip->devs);
 
 	chip->dev.class = tpm_class;
-	chip->dev.class->shutdown = tpm_class_shutdown;
+	chip->dev.class->shutdown_pre = tpm_class_shutdown;
 	chip->dev.release = tpm_dev_release;
 	chip->dev.parent = pdev;
 	chip->dev.groups = chip->groups;
diff --git a/drivers/input/keyboard/gpio_keys.c b/drivers/input/keyboard/gpio_keys.c
index a047b9af8369..0b10d4b356db 100644
--- a/drivers/input/keyboard/gpio_keys.c
+++ b/drivers/input/keyboard/gpio_keys.c
@@ -827,7 +827,7 @@ static int gpio_keys_probe(struct platform_device *pdev)
 
 	fwnode_handle_put(child);
 
-	error = sysfs_create_group(&dev->kobj, &gpio_keys_attr_group);
+	error = devm_device_add_group(dev, &gpio_keys_attr_group);
 	if (error) {
 		dev_err(dev, "Unable to export keys/switches, error: %d\n",
 			error);
@@ -838,23 +838,12 @@ static int gpio_keys_probe(struct platform_device *pdev)
 	if (error) {
 		dev_err(dev, "Unable to register input device, error: %d\n",
 			error);
-		goto err_remove_group;
+		return error;
 	}
 
 	device_init_wakeup(dev, wakeup);
 
 	return 0;
-
-err_remove_group:
-	sysfs_remove_group(&dev->kobj, &gpio_keys_attr_group);
-	return error;
-}
-
-static int gpio_keys_remove(struct platform_device *pdev)
-{
-	sysfs_remove_group(&pdev->dev.kobj, &gpio_keys_attr_group);
-
-	return 0;
 }
 
 static int __maybe_unused gpio_keys_suspend(struct device *dev)
@@ -912,7 +901,6 @@ static SIMPLE_DEV_PM_OPS(gpio_keys_pm_ops, gpio_keys_suspend, gpio_keys_resume);
 
 static struct platform_driver gpio_keys_device_driver = {
 	.probe		= gpio_keys_probe,
-	.remove		= gpio_keys_remove,
 	.driver		= {
 		.name	= "gpio-keys",
 		.pm	= &gpio_keys_pm_ops,
diff --git a/drivers/input/misc/axp20x-pek.c b/drivers/input/misc/axp20x-pek.c
index 38c79ebff033..cfeb0e943de6 100644
--- a/drivers/input/misc/axp20x-pek.c
+++ b/drivers/input/misc/axp20x-pek.c
@@ -182,13 +182,6 @@ static irqreturn_t axp20x_pek_irq(int irq, void *pwr)
 	return IRQ_HANDLED;
 }
 
-static void axp20x_remove_sysfs_group(void *_data)
-{
-	struct device *dev = _data;
-
-	sysfs_remove_group(&dev->kobj, &axp20x_attribute_group);
-}
-
 static int axp20x_pek_probe_input_device(struct axp20x_pek *axp20x_pek,
 					 struct platform_device *pdev)
 {
@@ -313,22 +306,13 @@ static int axp20x_pek_probe(struct platform_device *pdev)
 			return error;
 	}
 
-	error = sysfs_create_group(&pdev->dev.kobj, &axp20x_attribute_group);
+	error = devm_device_add_group(&pdev->dev, &axp20x_attribute_group);
 	if (error) {
 		dev_err(&pdev->dev, "Failed to create sysfs attributes: %d\n",
 			error);
 		return error;
 	}
 
-	error = devm_add_action(&pdev->dev,
-				axp20x_remove_sysfs_group, &pdev->dev);
-	if (error) {
-		axp20x_remove_sysfs_group(&pdev->dev);
-		dev_err(&pdev->dev, "Failed to add sysfs cleanup action: %d\n",
-			error);
-		return error;
-	}
-
 	platform_set_drvdata(pdev, axp20x_pek);
 
 	return 0;
diff --git a/drivers/input/rmi4/rmi_f01.c b/drivers/input/rmi4/rmi_f01.c
index 7f7e9176f7ea..6dca3c0fbb4a 100644
--- a/drivers/input/rmi4/rmi_f01.c
+++ b/drivers/input/rmi4/rmi_f01.c
@@ -570,18 +570,14 @@ static int rmi_f01_probe(struct rmi_function *fn)
 
 	dev_set_drvdata(&fn->dev, f01);
 
-	error = sysfs_create_group(&fn->rmi_dev->dev.kobj, &rmi_f01_attr_group);
+	error = devm_device_add_group(&fn->rmi_dev->dev, &rmi_f01_attr_group);
 	if (error)
-		dev_warn(&fn->dev, "Failed to create sysfs group: %d\n", error);
+		dev_warn(&fn->dev,
+			 "Failed to create attribute group: %d\n", error);
 
 	return 0;
 }
 
-static void rmi_f01_remove(struct rmi_function *fn)
-{
-	sysfs_remove_group(&fn->rmi_dev->dev.kobj, &rmi_f01_attr_group);
-}
-
 static int rmi_f01_config(struct rmi_function *fn)
 {
 	struct f01_data *f01 = dev_get_drvdata(&fn->dev);
@@ -721,7 +717,6 @@ struct rmi_function_handler rmi_f01_handler = {
 	},
 	.func		= 0x01,
 	.probe		= rmi_f01_probe,
-	.remove		= rmi_f01_remove,
 	.config		= rmi_f01_config,
 	.attention	= rmi_f01_attention,
 	.suspend	= rmi_f01_suspend,
diff --git a/drivers/video/fbdev/uvesafb.c b/drivers/video/fbdev/uvesafb.c
index dc0e8d90d9cc..6f8c0b9fc558 100644
--- a/drivers/video/fbdev/uvesafb.c
+++ b/drivers/video/fbdev/uvesafb.c
@@ -1860,19 +1860,18 @@ static int uvesafb_setup(char *options)
 }
 #endif /* !MODULE */
 
-static ssize_t show_v86d(struct device_driver *dev, char *buf)
+static ssize_t v86d_show(struct device_driver *dev, char *buf)
 {
 	return snprintf(buf, PAGE_SIZE, "%s\n", v86d_path);
 }
 
-static ssize_t store_v86d(struct device_driver *dev, const char *buf,
+static ssize_t v86d_store(struct device_driver *dev, const char *buf,
 		size_t count)
 {
 	strncpy(v86d_path, buf, PATH_MAX);
 	return count;
 }
-
-static DRIVER_ATTR(v86d, S_IRUGO | S_IWUSR, show_v86d, store_v86d);
+static DRIVER_ATTR_RW(v86d);
 
 static int uvesafb_init(void)
 {
diff --git a/drivers/xen/xen-pciback/pci_stub.c b/drivers/xen/xen-pciback/pci_stub.c
index 6331a95691a4..9e480fdebe1f 100644
--- a/drivers/xen/xen-pciback/pci_stub.c
+++ b/drivers/xen/xen-pciback/pci_stub.c
@@ -1172,8 +1172,8 @@ out:
 	return err;
 }
 
-static ssize_t pcistub_slot_add(struct device_driver *drv, const char *buf,
-				size_t count)
+static ssize_t new_slot_store(struct device_driver *drv, const char *buf,
+			      size_t count)
 {
 	int domain, bus, slot, func;
 	int err;
@@ -1189,10 +1189,10 @@ out:
 		err = count;
 	return err;
 }
-static DRIVER_ATTR(new_slot, S_IWUSR, NULL, pcistub_slot_add);
+static DRIVER_ATTR_WO(new_slot);
 
-static ssize_t pcistub_slot_remove(struct device_driver *drv, const char *buf,
-				   size_t count)
+static ssize_t remove_slot_store(struct device_driver *drv, const char *buf,
+				 size_t count)
 {
 	int domain, bus, slot, func;
 	int err;
@@ -1208,9 +1208,9 @@ out:
 		err = count;
 	return err;
 }
-static DRIVER_ATTR(remove_slot, S_IWUSR, NULL, pcistub_slot_remove);
+static DRIVER_ATTR_WO(remove_slot);
 
-static ssize_t pcistub_slot_show(struct device_driver *drv, char *buf)
+static ssize_t slots_show(struct device_driver *drv, char *buf)
 {
 	struct pcistub_device_id *pci_dev_id;
 	size_t count = 0;
@@ -1231,9 +1231,9 @@ static ssize_t pcistub_slot_show(struct device_driver *drv, char *buf)
 
 	return count;
 }
-static DRIVER_ATTR(slots, S_IRUSR, pcistub_slot_show, NULL);
+static DRIVER_ATTR_RO(slots);
 
-static ssize_t pcistub_irq_handler_show(struct device_driver *drv, char *buf)
+static ssize_t irq_handlers_show(struct device_driver *drv, char *buf)
 {
 	struct pcistub_device *psdev;
 	struct xen_pcibk_dev_data *dev_data;
@@ -1260,11 +1260,10 @@ static ssize_t pcistub_irq_handler_show(struct device_driver *drv, char *buf)
 	spin_unlock_irqrestore(&pcistub_devices_lock, flags);
 	return count;
 }
-static DRIVER_ATTR(irq_handlers, S_IRUSR, pcistub_irq_handler_show, NULL);
+static DRIVER_ATTR_RO(irq_handlers);
 
-static ssize_t pcistub_irq_handler_switch(struct device_driver *drv,
-					  const char *buf,
-					  size_t count)
+static ssize_t irq_handler_state_store(struct device_driver *drv,
+				       const char *buf, size_t count)
 {
 	struct pcistub_device *psdev;
 	struct xen_pcibk_dev_data *dev_data;
@@ -1301,11 +1300,10 @@ out:
 		err = count;
 	return err;
 }
-static DRIVER_ATTR(irq_handler_state, S_IWUSR, NULL,
-		   pcistub_irq_handler_switch);
+static DRIVER_ATTR_WO(irq_handler_state);
 
-static ssize_t pcistub_quirk_add(struct device_driver *drv, const char *buf,
-				 size_t count)
+static ssize_t quirks_store(struct device_driver *drv, const char *buf,
+			    size_t count)
 {
 	int domain, bus, slot, func, reg, size, mask;
 	int err;
@@ -1323,7 +1321,7 @@ out:
 	return err;
 }
 
-static ssize_t pcistub_quirk_show(struct device_driver *drv, char *buf)
+static ssize_t quirks_show(struct device_driver *drv, char *buf)
 {
 	int count = 0;
 	unsigned long flags;
@@ -1366,11 +1364,10 @@ out:
 
 	return count;
 }
-static DRIVER_ATTR(quirks, S_IRUSR | S_IWUSR, pcistub_quirk_show,
-		   pcistub_quirk_add);
+static DRIVER_ATTR_RW(quirks);
 
-static ssize_t permissive_add(struct device_driver *drv, const char *buf,
-			      size_t count)
+static ssize_t permissive_store(struct device_driver *drv, const char *buf,
+				size_t count)
 {
 	int domain, bus, slot, func;
 	int err;
@@ -1431,8 +1428,7 @@ static ssize_t permissive_show(struct device_driver *drv, char *buf)
 	spin_unlock_irqrestore(&pcistub_devices_lock, flags);
 	return count;
 }
-static DRIVER_ATTR(permissive, S_IRUSR | S_IWUSR, permissive_show,
-		   permissive_add);
+static DRIVER_ATTR_RW(permissive);
 
 static void pcistub_exit(void)
 {