Merge tag 'driver-core-6.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

Pull driver core updates from Greg KH:
"Here is a small set of driver core changes for 6.13-rc1.

Nothing major for this merge cycle, except for the two simple merge
conflicts are here just to make life interesting.

Included in here are:

- sysfs core changes and preparations for more sysfs api cleanups
that can come through all driver trees after -rc1 is out

- fw_devlink fixes based on many reports and debugging sessions

- list_for_each_reverse() removal, no one was using it!

- last-minute seq_printf() format string bug found and fixed in many
drivers all at once.

- minor bugfixes and changes full details in the shortlog"

* tag 'driver-core-6.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (35 commits)
Fix a potential abuse of seq_printf() format string in drivers
cpu: Remove spurious NULL in attribute_group definition
s390/con3215: Remove spurious NULL in attribute_group definition
perf: arm-ni: Remove spurious NULL in attribute_group definition
driver core: Constify bin_attribute definitions
sysfs: attribute_group: allow registration of const bin_attribute
firmware_loader: Fix possible resource leak in fw_log_firmware_info()
drivers: core: fw_devlink: Fix excess parameter description in docstring
driver core: class: Correct WARN() message in APIs class_(for_each|find)_device()
cacheinfo: Use of_property_present() for non-boolean properties
cdx: Fix cdx_mmap_resource() after constifying attr in ->mmap()
drivers: core: fw_devlink: Make the error message a bit more useful
phy: tegra: xusb: Set fwnode for xusb port devices
drm: display: Set fwnode for aux bus devices
driver core: fw_devlink: Stop trying to optimize cycle detection logic
driver core: Constify attribute arguments of binary attributes
sysfs: bin_attribute: add const read/write callback variants
sysfs: implement all BIN_ATTR_* macros in terms of __BIN_ATTR()
sysfs: treewide: constify attribute callback of bin_attribute::llseek()
sysfs: treewide: constify attribute callback of bin_attribute::mmap()
...

Documentation/driver-api/auxiliary_bus.rst

···
 
 .. kernel-doc:: drivers/base/auxiliary.c
    :identifiers: auxiliary_device_init __auxiliary_device_add
-                 auxiliary_find_device
 
 Auxiliary Device Memory Model and Lifespan
 ------------------------------------------

arch/alpha/kernel/pci-sysfs.c

···
  * Return: %0 on success, negative error code otherwise
  */
 static int pci_mmap_resource(struct kobject *kobj,
-			     struct bin_attribute *attr,
+			     const struct bin_attribute *attr,
 			     struct vm_area_struct *vma, int sparse)
 {
 	struct pci_dev *pdev = to_pci_dev(kobj_to_dev(kobj));
···
 }
 
 static int pci_mmap_resource_sparse(struct file *filp, struct kobject *kobj,
-				    struct bin_attribute *attr,
+				    const struct bin_attribute *attr,
 				    struct vm_area_struct *vma)
 {
 	return pci_mmap_resource(kobj, attr, vma, 1);
 }
 
 static int pci_mmap_resource_dense(struct file *filp, struct kobject *kobj,
-				   struct bin_attribute *attr,
+				   const struct bin_attribute *attr,
 				   struct vm_area_struct *vma)
 {
 	return pci_mmap_resource(kobj, attr, vma, 0);

drivers/base/auxiliary.c

···
  * Auxiliary devices are created and registered by a subsystem-level core
  * device that needs to break up its functionality into smaller fragments. One
  * way to extend the scope of an auxiliary_device is to encapsulate it within a
- * domain- pecific structure defined by the parent device. This structure
+ * domain-specific structure defined by the parent device. This structure
  * contains the auxiliary_device and any associated shared data/callbacks
  * needed to establish the connection with the parent.
  *
···
 	return ret;
 }
 EXPORT_SYMBOL_GPL(__auxiliary_device_add);
-
-/**
- * auxiliary_find_device - auxiliary device iterator for locating a particular device.
- * @start: Device to begin with
- * @data: Data to pass to match function
- * @match: Callback function to check device
- *
- * This function returns a reference to a device that is 'found'
- * for later use, as determined by the @match callback.
- *
- * The reference returned should be released with put_device().
- *
- * The callback should return 0 if the device doesn't match and non-zero
- * if it does.  If the callback returns non-zero, this function will
- * return to the caller and not iterate over any more devices.
- */
-struct auxiliary_device *auxiliary_find_device(struct device *start,
-					       const void *data,
-					       device_match_t match)
-{
-	struct device *dev;
-
-	dev = bus_find_device(&auxiliary_bus_type, start, data, match);
-	if (!dev)
-		return NULL;
-
-	return to_auxiliary_dev(dev);
-}
-EXPORT_SYMBOL_GPL(auxiliary_find_device);
 
 /**
  * __auxiliary_driver_register - register a driver for auxiliary bus devices

drivers/base/cacheinfo.c

···
 {
 	unsigned int leaves = 0;
 
-	if (of_property_read_bool(np, "cache-size"))
+	if (of_property_present(np, "cache-size"))
 		++leaves;
-	if (of_property_read_bool(np, "i-cache-size"))
+	if (of_property_present(np, "i-cache-size"))
 		++leaves;
-	if (of_property_read_bool(np, "d-cache-size"))
+	if (of_property_present(np, "d-cache-size"))
 		++leaves;
 
 	if (!leaves) {
···
 
 		cpumask_set_cpu(cpu, &this_leaf->shared_cpu_map);
 		for_each_online_cpu(i) {
-			struct cpu_cacheinfo *sib_cpu_ci = get_cpu_cacheinfo(i);
-
-			if (i == cpu || !sib_cpu_ci->info_list)
+			if (i == cpu || !per_cpu_cacheinfo(i))
 				continue;/* skip if itself or no cacheinfo */
 			for (sib_index = 0; sib_index < cache_leaves(i); sib_index++) {
 				sib_leaf = per_cpu_cacheinfo_idx(i, sib_index);
···
 	for (index = 0; index < cache_leaves(cpu); index++) {
 		this_leaf = per_cpu_cacheinfo_idx(cpu, index);
 		for_each_cpu(sibling, &this_leaf->shared_cpu_map) {
-			struct cpu_cacheinfo *sib_cpu_ci =
-						get_cpu_cacheinfo(sibling);
-
-			if (sibling == cpu || !sib_cpu_ci->info_list)
+			if (sibling == cpu || !per_cpu_cacheinfo(sibling))
 				continue;/* skip if itself or no cacheinfo */
 
 			for (sib_index = 0; sib_index < cache_leaves(sibling); sib_index++) {

drivers/base/class.c

···
 	if (!class)
 		return -EINVAL;
 	if (!sp) {
-		WARN(1, "%s called for class '%s' before it was initialized",
+		WARN(1, "%s called for class '%s' before it was registered",
 		     __func__, class->name);
 		return -EINVAL;
 	}
···
 	if (!class)
 		return NULL;
 	if (!sp) {
-		WARN(1, "%s called for class '%s' before it was initialized",
+		WARN(1, "%s called for class '%s' before it was registered",
 		     __func__, class->name);
 		return NULL;
 	}

drivers/base/core.c

···
 }
 EXPORT_SYMBOL_GPL(device_link_wait_removal);
 
-static struct class devlink_class = {
+static const struct class devlink_class = {
 	.name = "devlink",
 	.dev_groups = devlink_groups,
 	.dev_release = devlink_dev_release,
···
 
 /**
  * __fw_devlink_relax_cycles - Relax and mark dependency cycles.
- * @con: Potential consumer device.
+ * @con_handle: Potential consumer device fwnode.
  * @sup_handle: Potential supplier's fwnode.
  *
  * Needs to be called with fwnode_lock and device link lock held.
···
  *
  * Return true if one or more cycles were found. Otherwise, return false.
  */
-static bool __fw_devlink_relax_cycles(struct device *con,
+static bool __fw_devlink_relax_cycles(struct fwnode_handle *con_handle,
 				 struct fwnode_handle *sup_handle)
 {
-	struct device *sup_dev = NULL, *par_dev = NULL;
+	struct device *sup_dev = NULL, *par_dev = NULL, *con_dev = NULL;
 	struct fwnode_link *link;
 	struct device_link *dev_link;
 	bool ret = false;
···
 
 	sup_handle->flags |= FWNODE_FLAG_VISITED;
 
-	sup_dev = get_dev_from_fwnode(sup_handle);
-
 	/* Termination condition. */
-	if (sup_dev == con) {
+	if (sup_handle == con_handle) {
 		pr_debug("----- cycle: start -----\n");
 		ret = true;
 		goto out;
 	}
 
+	sup_dev = get_dev_from_fwnode(sup_handle);
+	con_dev = get_dev_from_fwnode(con_handle);
 	/*
 	 * If sup_dev is bound to a driver and @con hasn't started binding to a
 	 * driver, sup_dev can't be a consumer of @con. So, no need to check
 	 * further.
 	 */
 	if (sup_dev && sup_dev->links.status ==  DL_DEV_DRIVER_BOUND &&
-	    con->links.status == DL_DEV_NO_DRIVER) {
+	    con_dev && con_dev->links.status == DL_DEV_NO_DRIVER) {
 		ret = false;
 		goto out;
 	}
···
 		if (link->flags & FWLINK_FLAG_IGNORE)
 			continue;
 
-		if (__fw_devlink_relax_cycles(con, link->supplier)) {
+		if (__fw_devlink_relax_cycles(con_handle, link->supplier)) {
 			__fwnode_link_cycle(link);
 			ret = true;
 		}
···
 	else
 		par_dev = fwnode_get_next_parent_dev(sup_handle);
 
-	if (par_dev && __fw_devlink_relax_cycles(con, par_dev->fwnode)) {
+	if (par_dev && __fw_devlink_relax_cycles(con_handle, par_dev->fwnode)) {
 		pr_debug("%pfwf: cycle: child of %pfwf\n", sup_handle,
 			 par_dev->fwnode);
 		ret = true;
···
 		    !(dev_link->flags & DL_FLAG_CYCLE))
 			continue;
 
-		if (__fw_devlink_relax_cycles(con,
+		if (__fw_devlink_relax_cycles(con_handle,
 					      dev_link->supplier->fwnode)) {
 			pr_debug("%pfwf: cycle: depends on %pfwf\n", sup_handle,
 				 dev_link->supplier->fwnode);
···
 	if (link->flags & FWLINK_FLAG_IGNORE)
 		return 0;
 
-	if (con->fwnode == link->consumer)
-		flags = fw_devlink_get_flags(link->flags);
-	else
-		flags = FW_DEVLINK_FLAGS_PERMISSIVE;
-
 	/*
 	 * In some cases, a device P might also be a supplier to its child node
 	 * C. However, this would defer the probe of C until the probe of P
···
 		return -EINVAL;
 
 	/*
-	 * SYNC_STATE_ONLY device links don't block probing and supports cycles.
-	 * So, one might expect that cycle detection isn't necessary for them.
-	 * However, if the device link was marked as SYNC_STATE_ONLY because
-	 * it's part of a cycle, then we still need to do cycle detection. This
-	 * is because the consumer and supplier might be part of multiple cycles
-	 * and we need to detect all those cycles.
+	 * Don't try to optimize by not calling the cycle detection logic under
+	 * certain conditions. There's always some corner case that won't get
+	 * detected.
 	 */
-	if (!device_link_flag_is_sync_state_only(flags) ||
-	    flags & DL_FLAG_CYCLE) {
-		device_links_write_lock();
-		if (__fw_devlink_relax_cycles(con, sup_handle)) {
-			__fwnode_link_cycle(link);
-			flags = fw_devlink_get_flags(link->flags);
-			pr_debug("----- cycle: end -----\n");
-			dev_info(con, "Fixed dependency cycle(s) with %pfwf\n",
-				 sup_handle);
-		}
-		device_links_write_unlock();
+	device_links_write_lock();
+	if (__fw_devlink_relax_cycles(link->consumer, sup_handle)) {
+		__fwnode_link_cycle(link);
+		pr_debug("----- cycle: end -----\n");
+		pr_info("%pfwf: Fixed dependency cycle(s) with %pfwf\n",
+			link->consumer, sup_handle);
 	}
+	device_links_write_unlock();
+
+	if (con->fwnode == link->consumer)
+		flags = fw_devlink_get_flags(link->flags);
+	else
+		flags = FW_DEVLINK_FLAGS_PERMISSIVE;
 
 	if (sup_handle->flags & FWNODE_FLAG_NOT_DEVICE)
 		sup_dev = fwnode_get_next_parent_dev(sup_handle);
···
 		}
 
 		if (con != sup_dev && !device_link_add(con, sup_dev, flags)) {
-			dev_err(con, "Failed to create device link (0x%x) with %s\n",
-				flags, dev_name(sup_dev));
+			dev_err(con, "Failed to create device link (0x%x) with supplier %s for %pfwf\n",
+				flags, dev_name(sup_dev), link->consumer);
 			ret = -EINVAL;
 		}
 

drivers/base/firmware_loader/main.c

···
 	shash->tfm = alg;
 
 	if (crypto_shash_digest(shash, fw->data, fw->size, sha256buf) < 0)
-		goto out_shash;
+		goto out_free;
 
 	for (int i = 0; i < SHA256_DIGEST_SIZE; i++)
 		sprintf(&outbuf[i * 2], "%02x", sha256buf[i]);
 	outbuf[SHA256_BLOCK_SIZE] = 0;
 	dev_dbg(device, "Loaded FW: %s, sha256: %s\n", name, outbuf);
 
-out_shash:
-	crypto_free_shash(alg);
 out_free:
 	kfree(shash);
 	kfree(outbuf);
 	kfree(sha256buf);
+	crypto_free_shash(alg);
 }
 #else
 static void fw_log_firmware_info(const struct firmware *fw, const char *name,
···
 
 /**
  * firmware_request_cache() - cache firmware for suspend so resume can use it
- * @name: name of firmware file
  * @device: device for which firmware should be cached for
+ * @name: name of firmware file
  *
  * There are some devices with an optimization that enables the device to not
  * require loading firmware on system reboot. This optimization may still

drivers/base/node.c

···
 };
 
 static inline ssize_t cpumap_read(struct file *file, struct kobject *kobj,
-				  struct bin_attribute *attr, char *buf,
+				  const struct bin_attribute *attr, char *buf,
 				  loff_t off, size_t count)
 {
 	struct device *dev = kobj_to_dev(kobj);
···
 	return n;
 }
 
-static BIN_ATTR_RO(cpumap, CPUMAP_FILE_MAX_BYTES);
+static const BIN_ATTR_RO(cpumap, CPUMAP_FILE_MAX_BYTES);
 
 static inline ssize_t cpulist_read(struct file *file, struct kobject *kobj,
-				   struct bin_attribute *attr, char *buf,
+				   const struct bin_attribute *attr, char *buf,
 				   loff_t off, size_t count)
 {
 	struct device *dev = kobj_to_dev(kobj);
···
 	return n;
 }
 
-static BIN_ATTR_RO(cpulist, CPULIST_FILE_MAX_BYTES);
+static const BIN_ATTR_RO(cpulist, CPULIST_FILE_MAX_BYTES);
 
 /**
  * struct node_access_nodes - Access class device to hold user visible
···
 	NULL
 };
 
-static struct bin_attribute *node_dev_bin_attrs[] = {
+static const struct bin_attribute *node_dev_bin_attrs[] = {
 	&bin_attr_cpumap,
 	&bin_attr_cpulist,
 	NULL
···
 
 static const struct attribute_group node_dev_group = {
 	.attrs = node_dev_attrs,
-	.bin_attrs = node_dev_bin_attrs
+	.bin_attrs_new = node_dev_bin_attrs,
 };
 
 static const struct attribute_group *node_dev_groups[] = {

drivers/base/power/sysfs.c

···
 	return sysfs_emit(buf, "%lld\n", msec);
 }
 
-static inline int dpm_sysfs_wakeup_change_owner(struct device *dev, kuid_t kuid,
-						kgid_t kgid)
-{
-	if (dev->power.wakeup && dev->power.wakeup->dev)
-		return device_change_owner(dev->power.wakeup->dev, kuid, kgid);
-	return 0;
-}
-
 static DEVICE_ATTR_RO(wakeup_last_time_ms);
 
 #ifdef CONFIG_PM_AUTOSLEEP
···
 
 static DEVICE_ATTR_RO(wakeup_prevent_sleep_time_ms);
 #endif /* CONFIG_PM_AUTOSLEEP */
+
+static inline int dpm_sysfs_wakeup_change_owner(struct device *dev, kuid_t kuid,
+						kgid_t kgid)
+{
+	if (dev->power.wakeup && dev->power.wakeup->dev)
+		return device_change_owner(dev->power.wakeup->dev, kuid, kgid);
+	return 0;
+}
+
 #else /* CONFIG_PM_SLEEP */
 static inline int dpm_sysfs_wakeup_change_owner(struct device *dev, kuid_t kuid,
 						kgid_t kgid)

drivers/base/topology.c

···
 
 #define define_siblings_read_func(name, mask)					\
 static ssize_t name##_read(struct file *file, struct kobject *kobj,		\
-			   struct bin_attribute *attr, char *buf,		\
+			   const struct bin_attribute *attr, char *buf,		\
 			   loff_t off, size_t count)				\
 {										\
 	struct device *dev = kobj_to_dev(kobj);                                 \
···
 }										\
 										\
 static ssize_t name##_list_read(struct file *file, struct kobject *kobj,	\
-				struct bin_attribute *attr, char *buf,		\
+				const struct bin_attribute *attr, char *buf,	\
 				loff_t off, size_t count)			\
 {										\
 	struct device *dev = kobj_to_dev(kobj);					\
···
 static DEVICE_ATTR_ADMIN_RO(ppin);
 
 define_siblings_read_func(thread_siblings, sibling_cpumask);
-static BIN_ATTR_RO(thread_siblings, CPUMAP_FILE_MAX_BYTES);
-static BIN_ATTR_RO(thread_siblings_list, CPULIST_FILE_MAX_BYTES);
+static const BIN_ATTR_RO(thread_siblings, CPUMAP_FILE_MAX_BYTES);
+static const BIN_ATTR_RO(thread_siblings_list, CPULIST_FILE_MAX_BYTES);
 
 define_siblings_read_func(core_cpus, sibling_cpumask);
-static BIN_ATTR_RO(core_cpus, CPUMAP_FILE_MAX_BYTES);
-static BIN_ATTR_RO(core_cpus_list, CPULIST_FILE_MAX_BYTES);
+static const BIN_ATTR_RO(core_cpus, CPUMAP_FILE_MAX_BYTES);
+static const BIN_ATTR_RO(core_cpus_list, CPULIST_FILE_MAX_BYTES);
 
 define_siblings_read_func(core_siblings, core_cpumask);
-static BIN_ATTR_RO(core_siblings, CPUMAP_FILE_MAX_BYTES);
-static BIN_ATTR_RO(core_siblings_list, CPULIST_FILE_MAX_BYTES);
+static const BIN_ATTR_RO(core_siblings, CPUMAP_FILE_MAX_BYTES);
+static const BIN_ATTR_RO(core_siblings_list, CPULIST_FILE_MAX_BYTES);
 
 #ifdef TOPOLOGY_CLUSTER_SYSFS
 define_siblings_read_func(cluster_cpus, cluster_cpumask);
-static BIN_ATTR_RO(cluster_cpus, CPUMAP_FILE_MAX_BYTES);
-static BIN_ATTR_RO(cluster_cpus_list, CPULIST_FILE_MAX_BYTES);
+static const BIN_ATTR_RO(cluster_cpus, CPUMAP_FILE_MAX_BYTES);
+static const BIN_ATTR_RO(cluster_cpus_list, CPULIST_FILE_MAX_BYTES);
 #endif
 
 #ifdef TOPOLOGY_DIE_SYSFS
 define_siblings_read_func(die_cpus, die_cpumask);
-static BIN_ATTR_RO(die_cpus, CPUMAP_FILE_MAX_BYTES);
-static BIN_ATTR_RO(die_cpus_list, CPULIST_FILE_MAX_BYTES);
+static const BIN_ATTR_RO(die_cpus, CPUMAP_FILE_MAX_BYTES);
+static const BIN_ATTR_RO(die_cpus_list, CPULIST_FILE_MAX_BYTES);
 #endif
 
 define_siblings_read_func(package_cpus, core_cpumask);
-static BIN_ATTR_RO(package_cpus, CPUMAP_FILE_MAX_BYTES);
-static BIN_ATTR_RO(package_cpus_list, CPULIST_FILE_MAX_BYTES);
+static const BIN_ATTR_RO(package_cpus, CPUMAP_FILE_MAX_BYTES);
+static const BIN_ATTR_RO(package_cpus_list, CPULIST_FILE_MAX_BYTES);
 
 #ifdef TOPOLOGY_BOOK_SYSFS
 define_id_show_func(book_id, "%d");
 static DEVICE_ATTR_RO(book_id);
 define_siblings_read_func(book_siblings, book_cpumask);
-static BIN_ATTR_RO(book_siblings, CPUMAP_FILE_MAX_BYTES);
-static BIN_ATTR_RO(book_siblings_list, CPULIST_FILE_MAX_BYTES);
+static const BIN_ATTR_RO(book_siblings, CPUMAP_FILE_MAX_BYTES);
+static const BIN_ATTR_RO(book_siblings_list, CPULIST_FILE_MAX_BYTES);
 #endif
 
 #ifdef TOPOLOGY_DRAWER_SYSFS
 define_id_show_func(drawer_id, "%d");
 static DEVICE_ATTR_RO(drawer_id);
 define_siblings_read_func(drawer_siblings, drawer_cpumask);
-static BIN_ATTR_RO(drawer_siblings, CPUMAP_FILE_MAX_BYTES);
-static BIN_ATTR_RO(drawer_siblings_list, CPULIST_FILE_MAX_BYTES);
+static const BIN_ATTR_RO(drawer_siblings, CPUMAP_FILE_MAX_BYTES);
+static const BIN_ATTR_RO(drawer_siblings_list, CPULIST_FILE_MAX_BYTES);
 #endif
 
-static struct bin_attribute *bin_attrs[] = {
+static const struct bin_attribute *const bin_attrs[] = {
 	&bin_attr_core_cpus,
 	&bin_attr_core_cpus_list,
 	&bin_attr_thread_siblings,
···
 
 static const struct attribute_group topology_attr_group = {
 	.attrs = default_attrs,
-	.bin_attrs = bin_attrs,
+	.bin_attrs_new = bin_attrs,
 	.is_visible = topology_is_visible,
 	.name = "topology"
 };

drivers/base/trace.h

···
 		__field(struct device *, dev)
 		__field(const char *, op)
 		__field(void *, node)
-		__field(const char *, name)
+		__string(name, name)
 		__field(size_t, size)
 	),
 	TP_fast_assign(
 		__assign_str(devname);
 		__entry->op = op;
 		__entry->node = node;
-		__entry->name = name;
+		__assign_str(name);
 		__entry->size = size;
 	),
 	TP_printk("%s %3s %p %s (%zu bytes)", __get_str(devname),
-		  __entry->op, __entry->node, __entry->name, __entry->size)
+		  __entry->op, __entry->node, __get_str(name), __entry->size)
 );
 
 DEFINE_EVENT(devres, devres_log,

drivers/cdx/cdx.c

···
  * Return: true on success, false otherwise.
  */
 static int cdx_mmap_resource(struct file *fp, struct kobject *kobj,
-			     struct bin_attribute *attr,
+			     const struct bin_attribute *attr,
 			     struct vm_area_struct *vma)
 {
 	struct cdx_device *cdx_dev = to_cdx_device(kobj_to_dev(kobj));

drivers/cxl/port.c

···
 static BIN_ATTR_ADMIN_RO(CDAT, 0);
 
 static umode_t cxl_port_bin_attr_is_visible(struct kobject *kobj,
-					    struct bin_attribute *attr, int i)
+					    const struct bin_attribute *attr, int i)
 {
 	struct device *dev = kobj_to_dev(kobj);
 	struct cxl_port *port = to_cxl_port(dev);

drivers/gpio/gpio-aspeed-sgpio.c

···
 	int offset;
 
 	irqd_to_aspeed_sgpio_data(d, &gpio, &bank, &bit, &offset);
-	seq_printf(p, dev_name(gpio->dev));
+	seq_puts(p, dev_name(gpio->dev));
 }
 
 static const struct irq_chip aspeed_sgpio_irq_chip = {

drivers/gpio/gpio-aspeed.c

···
 	if (rc)
 		return;
 
-	seq_printf(p, dev_name(gpio->dev));
+	seq_puts(p, dev_name(gpio->dev));
 }
 
 static const struct irq_chip aspeed_gpio_irq_chip = {

drivers/gpio/gpio-ep93xx.c

···
 {
 	struct gpio_chip *gc = irq_data_get_irq_chip_data(data);
 
-	seq_printf(p, dev_name(gc->parent));
+	seq_puts(p, dev_name(gc->parent));
 }
 
 static const struct irq_chip gpio_eic_irq_chip = {

drivers/gpio/gpio-hlwd.c

···
 	struct hlwd_gpio *hlwd =
 		gpiochip_get_data(irq_data_get_irq_chip_data(data));
 
-	seq_printf(p, dev_name(hlwd->dev));
+	seq_puts(p, dev_name(hlwd->dev));
 }
 
 static const struct irq_chip hlwd_gpio_irq_chip = {

drivers/gpio/gpio-mlxbf2.c

···
 	struct gpio_chip *gc = irq_data_get_irq_chip_data(irqd);
 	struct mlxbf2_gpio_context *gs = gpiochip_get_data(gc);
 
-	seq_printf(p, dev_name(gs->dev));
+	seq_puts(p, dev_name(gs->dev));
 }
 
 static const struct irq_chip mlxbf2_gpio_irq_chip = {

drivers/gpio/gpio-omap.c

···
 {
 	struct gpio_bank *bank = omap_irq_data_get_bank(d);
 
-	seq_printf(p, dev_name(bank->dev));
+	seq_puts(p, dev_name(bank->dev));
 }
 
 static const struct irq_chip omap_gpio_irq_chip = {

drivers/gpio/gpio-pca953x.c

···
 {
 	struct gpio_chip *gc = irq_data_get_irq_chip_data(data);
 
-	seq_printf(p, dev_name(gc->parent));
+	seq_puts(p, dev_name(gc->parent));
 }
 
 static const struct irq_chip pca953x_irq_chip = {

drivers/gpio/gpio-pl061.c

···
 {
 	struct gpio_chip *gc = irq_data_get_irq_chip_data(data);
 
-	seq_printf(p, dev_name(gc->parent));
+	seq_puts(p, dev_name(gc->parent));
 }
 
 static const struct irq_chip pl061_irq_chip = {

drivers/gpio/gpio-tegra.c

···
 {
 	struct gpio_chip *chip = irq_data_get_irq_chip_data(d);
 
-	seq_printf(s, dev_name(chip->parent));
+	seq_puts(s, dev_name(chip->parent));
 }
 
 static const struct irq_chip tegra_gpio_irq_chip = {

drivers/gpio/gpio-tegra186.c

···
 {
 	struct gpio_chip *gc = irq_data_get_irq_chip_data(data);
 
-	seq_printf(p, dev_name(gc->parent));
+	seq_puts(p, dev_name(gc->parent));
 }
 
 static const struct irq_chip tegra186_gpio_irq_chip = {

drivers/gpio/gpio-tqmx86.c

···
 {
 	struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
 
-	seq_printf(p, gc->label);
+	seq_puts(p, gc->label);
 }
 
 static const struct irq_chip tqmx86_gpio_irq_chip = {

drivers/gpio/gpio-visconti.c

···
 	struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
 	struct visconti_gpio *priv = gpiochip_get_data(gc);
 
-	seq_printf(p, dev_name(priv->dev));
+	seq_puts(p, dev_name(priv->dev));
 }
 
 static const struct irq_chip visconti_gpio_irq_chip = {

drivers/gpio/gpio-xgs-iproc.c

···
 	struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
 	struct iproc_gpio_chip *chip = to_iproc_gpio(gc);
 
-	seq_printf(p, dev_name(chip->dev));
+	seq_puts(p, dev_name(chip->dev));
 }
 
 static const struct irq_chip iproc_gpio_irq_chip = {

drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c

···
 }
 
 static umode_t amdgpu_bin_flash_attr_is_visible(struct kobject *kobj,
-						struct bin_attribute *attr,
+						const struct bin_attribute *attr,
 						int idx)
 {
 	struct device *dev = kobj_to_dev(kobj);

drivers/gpu/drm/display/drm_dp_aux_bus.c

···
 	aux_ep->dev.parent = aux->dev;
 	aux_ep->dev.bus = &dp_aux_bus_type;
 	aux_ep->dev.type = &dp_aux_device_type_type;
-	aux_ep->dev.of_node = of_node_get(np);
+	device_set_node(&aux_ep->dev, of_fwnode_handle(of_node_get(np)));
 	dev_set_name(&aux_ep->dev, "aux-%s", dev_name(aux->dev));
 
 	ret = device_register(&aux_ep->dev);

drivers/infiniband/hw/qib/qib_sysfs.c

···
 };
 
 static umode_t qib_ccmgta_is_bin_visible(struct kobject *kobj,
-				 struct bin_attribute *attr, int n)
+				 const struct bin_attribute *attr, int n)
 {
 	struct qib_pportdata *ppd = qib_get_pportdata_kobj(kobj);
 

drivers/irqchip/irq-gic.c

···
 	struct gic_chip_data *gic = irq_data_get_irq_chip_data(d);
 
 	if (gic->domain->pm_dev)
-		seq_printf(p, gic->domain->pm_dev->of_node->name);
+		seq_puts(p, gic->domain->pm_dev->of_node->name);
 	else
 		seq_printf(p, "GIC-%d", (int)(gic - &gic_data[0]));
 }

drivers/irqchip/irq-mvebu-pic.c

···
 {
 	struct mvebu_pic *pic = irq_data_get_irq_chip_data(d);
 
-	seq_printf(p, dev_name(&pic->pdev->dev));
+	seq_puts(p, dev_name(&pic->pdev->dev));
 }
 
 static const struct irq_chip mvebu_pic_chip = {

drivers/irqchip/irq-versatile-fpga.c

···
 {
 	struct fpga_irq_data *f = irq_data_get_irq_chip_data(d);
 
-	seq_printf(p, irq_domain_get_of_node(f->domain)->name);
+	seq_puts(p, irq_domain_get_of_node(f->domain)->name);
 }
 
 static const struct irq_chip fpga_chip = {

drivers/misc/ocxl/sysfs.c

···
 };
 
 static int global_mmio_mmap(struct file *filp, struct kobject *kobj,
-			struct bin_attribute *bin_attr,
+			const struct bin_attribute *bin_attr,
 			struct vm_area_struct *vma)
 {
 	struct ocxl_afu *afu = to_afu(kobj_to_dev(kobj));

drivers/mtd/spi-nor/sysfs.c

···
 }
 
 static umode_t spi_nor_sysfs_is_bin_visible(struct kobject *kobj,
-					    struct bin_attribute *attr, int n)
+					    const struct bin_attribute *attr, int n)
 {
 	struct spi_device *spi = to_spi_device(kobj_to_dev(kobj));
 	struct spi_mem *spimem = spi_get_drvdata(spi);

drivers/nvmem/core.c

···
 }
 
 static umode_t nvmem_bin_attr_is_visible(struct kobject *kobj,
-					 struct bin_attribute *attr, int i)
+					 const struct bin_attribute *attr,
+					 int i)
 {
 	struct device *dev = kobj_to_dev(kobj);
 	struct nvmem_device *nvmem = to_nvmem_device(dev);
 
-	attr->size = nvmem->size;
-
 	return nvmem_bin_attr_get_umode(nvmem);
+}
+
+static size_t nvmem_bin_attr_size(struct kobject *kobj,
+				  const struct bin_attribute *attr,
+				  int i)
+{
+	struct device *dev = kobj_to_dev(kobj);
+	struct nvmem_device *nvmem = to_nvmem_device(dev);
+
+	return nvmem->size;
 }
 
 static umode_t nvmem_attr_is_visible(struct kobject *kobj,
···
 	.bin_attrs	= nvmem_bin_attributes,
 	.attrs		= nvmem_attrs,
 	.is_bin_visible = nvmem_bin_attr_is_visible,
+	.bin_size	= nvmem_bin_attr_size,
 	.is_visible	= nvmem_attr_is_visible,
 };
 

drivers/pci/p2pdma.c

···
 static DEVICE_ATTR_RO(published);
 
 static int p2pmem_alloc_mmap(struct file *filp, struct kobject *kobj,
-		struct bin_attribute *attr, struct vm_area_struct *vma)
+		const struct bin_attribute *attr, struct vm_area_struct *vma)
 {
 	struct pci_dev *pdev = to_pci_dev(kobj_to_dev(kobj));
 	size_t len = vma->vm_end - vma->vm_start;

drivers/pci/pci-sysfs.c

···
 	NULL,
 };
 
-static umode_t pci_dev_config_attr_is_visible(struct kobject *kobj,
-					      struct bin_attribute *a, int n)
+static size_t pci_dev_config_attr_bin_size(struct kobject *kobj,
+					   const struct bin_attribute *a,
+					   int n)
 {
 	struct pci_dev *pdev = to_pci_dev(kobj_to_dev(kobj));
 
-	a->size = PCI_CFG_SPACE_SIZE;
 	if (pdev->cfg_size > PCI_CFG_SPACE_SIZE)
-		a->size = PCI_CFG_SPACE_EXP_SIZE;
-
-	return a->attr.mode;
+		return PCI_CFG_SPACE_EXP_SIZE;
+	return PCI_CFG_SPACE_SIZE;
 }
 
 static const struct attribute_group pci_dev_config_attr_group = {
 	.bin_attrs = pci_dev_config_attrs,
-	.is_bin_visible = pci_dev_config_attr_is_visible,
+	.bin_size = pci_dev_config_attr_bin_size,
 };
 
 /*
···
 static __maybe_unused loff_t
 pci_llseek_resource(struct file *filep,
 		    struct kobject *kobj __always_unused,
-		    struct bin_attribute *attr,
+		    const struct bin_attribute *attr,
 		    loff_t offset, int whence)
 {
 	return fixed_size_llseek(filep, offset, whence, attr->size);
···
  * memory space.
  */
 static int pci_mmap_legacy_mem(struct file *filp, struct kobject *kobj,
-			       struct bin_attribute *attr,
+			       const struct bin_attribute *attr,
 			       struct vm_area_struct *vma)
 {
 	struct pci_bus *bus = to_pci_bus(kobj_to_dev(kobj));
···
  * memory space. Returns -ENOSYS if the operation isn't supported
  */
 static int pci_mmap_legacy_io(struct file *filp, struct kobject *kobj,
-			      struct bin_attribute *attr,
+			      const struct bin_attribute *attr,
 			      struct vm_area_struct *vma)
 {
 	struct pci_bus *bus = to_pci_bus(kobj_to_dev(kobj));
···
  *
  * Use the regular PCI mapping routines to map a PCI resource into userspace.
  */
-static int pci_mmap_resource(struct kobject *kobj, struct bin_attribute *attr,
+static int pci_mmap_resource(struct kobject *kobj, const struct bin_attribute *attr,
 			     struct vm_area_struct *vma, int write_combine)
 {
 	struct pci_dev *pdev = to_pci_dev(kobj_to_dev(kobj));
···
 }
 
 static int pci_mmap_resource_uc(struct file *filp, struct kobject *kobj,
-				struct bin_attribute *attr,
+				const struct bin_attribute *attr,
 				struct vm_area_struct *vma)
 {
 	return pci_mmap_resource(kobj, attr, vma, 0);
 }
 
 static int pci_mmap_resource_wc(struct file *filp, struct kobject *kobj,
-				struct bin_attribute *attr,
+				const struct bin_attribute *attr,
 				struct vm_area_struct *vma)
 {
 	return pci_mmap_resource(kobj, attr, vma, 1);
···
 };
 
 static umode_t pci_dev_rom_attr_is_visible(struct kobject *kobj,
-					   struct bin_attribute *a, int n)
+					   const struct bin_attribute *a, int n)
 {
 	struct pci_dev *pdev = to_pci_dev(kobj_to_dev(kobj));
-	size_t rom_size;
 
 	/* If the device has a ROM, try to expose it in sysfs. */
-	rom_size = pci_resource_len(pdev, PCI_ROM_RESOURCE);
-	if (!rom_size)
+	if (!pci_resource_end(pdev, PCI_ROM_RESOURCE))
 		return 0;
 
-	a->size = rom_size;
-
 	return a->attr.mode;
+}
+
+static size_t pci_dev_rom_attr_bin_size(struct kobject *kobj,
+					const struct bin_attribute *a, int n)
+{
+	struct pci_dev *pdev = to_pci_dev(kobj_to_dev(kobj));
+
+	return pci_resource_len(pdev, PCI_ROM_RESOURCE);
 }
 
 static const struct attribute_group pci_dev_rom_attr_group = {
 	.bin_attrs = pci_dev_rom_attrs,
 	.is_bin_visible = pci_dev_rom_attr_is_visible,
+	.bin_size = pci_dev_rom_attr_bin_size,
 };
 
 static ssize_t reset_store(struct device *dev, struct device_attribute *attr,

drivers/pci/vpd.c

···
 };
 
 static umode_t vpd_attr_is_visible(struct kobject *kobj,
-				   struct bin_attribute *a, int n)
+				   const struct bin_attribute *a, int n)
 {
 	struct pci_dev *pdev = to_pci_dev(kobj_to_dev(kobj));
 

drivers/perf/arm-ni.c

···
 
 static const struct attribute_group arm_ni_other_attr_group = {
 	.attrs = arm_ni_other_attrs,
-	NULL
 };
 
 static const struct attribute_group *arm_ni_attr_groups[] = {

drivers/phy/tegra/xusb.c

···
 
 	device_initialize(&port->dev);
 	port->dev.type = &tegra_xusb_port_type;
-	port->dev.of_node = of_node_get(np);
+	device_set_node(&port->dev, of_fwnode_handle(of_node_get(np)));
 	port->dev.parent = padctl->dev;
 
 	err = dev_set_name(&port->dev, "%s-%u", name, index);

drivers/pinctrl/bcm/pinctrl-iproc-gpio.c

···
 	struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
 	struct iproc_gpio *chip = gpiochip_get_data(gc);
 
-	seq_printf(p, dev_name(chip->dev));
+	seq_puts(p, dev_name(chip->dev));
 }
 
 static const struct irq_chip iproc_gpio_irq_chip = {

drivers/pinctrl/mvebu/pinctrl-armada-37xx.c

···
 	struct gpio_chip *chip = irq_data_get_irq_chip_data(d);
 	struct armada_37xx_pinctrl *info = gpiochip_get_data(chip);
 
-	seq_printf(p, info->data->name);
+	seq_puts(p, info->data->name);
 }
 
 static const struct irq_chip armada_37xx_irqchip = {

drivers/pinctrl/pinctrl-mcp23s08.c

···
 	struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
 	struct mcp23s08 *mcp = gpiochip_get_data(gc);
 
-	seq_printf(p, dev_name(mcp->dev));
+	seq_puts(p, dev_name(mcp->dev));
 }
 
 static const struct irq_chip mcp23s08_irq_chip = {

drivers/pinctrl/pinctrl-stmfx.c

···
 	struct gpio_chip *gpio_chip = irq_data_get_irq_chip_data(d);
 	struct stmfx_pinctrl *pctl = gpiochip_get_data(gpio_chip);
 
-	seq_printf(p, dev_name(pctl->dev));
+	seq_puts(p, dev_name(pctl->dev));
 }
 
 static const struct irq_chip stmfx_pinctrl_irq_chip = {

drivers/pinctrl/pinctrl-sx150x.c

···
 	struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
 	struct sx150x_pinctrl *pctl = gpiochip_get_data(gc);
 
-	seq_printf(p, pctl->client->name);
+	seq_puts(p, pctl->client->name);
 }
 
 static const struct irq_chip sx150x_irq_chip = {

drivers/pinctrl/renesas/pinctrl-rzg2l.c

···
 {
 	struct gpio_chip *gc = irq_data_get_irq_chip_data(data);
 
-	seq_printf(p, dev_name(gc->parent));
+	seq_puts(p, dev_name(gc->parent));
 }
 
 static int rzg2l_gpio_irq_set_wake(struct irq_data *data, unsigned int on)

drivers/platform/x86/amd/hsmp/acpi.c

···
 }
 
 static umode_t hsmp_is_sock_attr_visible(struct kobject *kobj,
-					 struct bin_attribute *battr, int id)
+					 const struct bin_attribute *battr, int id)
 {
 	if (hsmp_pdev->proto_ver == HSMP_PROTO_VER6)
 		return battr->attr.mode;

drivers/platform/x86/amd/hsmp/plat.c

···
 }
 
 static umode_t hsmp_is_sock_attr_visible(struct kobject *kobj,
-					 struct bin_attribute *battr, int id)
+					 const struct bin_attribute *battr, int id)
 {
 	u16 sock_ind;
 

drivers/platform/x86/intel/pmt/class.c

···
 
 static int
 intel_pmt_mmap(struct file *filp, struct kobject *kobj,
-		struct bin_attribute *attr, struct vm_area_struct *vma)
+		const struct bin_attribute *attr, struct vm_area_struct *vma)
 {
 	struct intel_pmt_entry *entry = container_of(attr,
 						     struct intel_pmt_entry,

drivers/platform/x86/intel/sdsi.c

···
 };
 
 static umode_t
-sdsi_battr_is_visible(struct kobject *kobj, struct bin_attribute *attr, int n)
+sdsi_battr_is_visible(struct kobject *kobj, const struct bin_attribute *attr, int n)
 {
 	struct device *dev = kobj_to_dev(kobj);
 	struct sdsi_priv *priv = dev_get_drvdata(dev);

drivers/s390/char/con3215.c

···
 
 static struct attribute_group con3215_drv_attr_group = {
 	.attrs = con3215_drv_attrs,
-	NULL,
 };
 
 static const struct attribute_group *con3215_drv_attr_groups[] = {

drivers/scsi/scsi_sysfs.c

···
 }
 
 static umode_t scsi_sdev_bin_attr_is_visible(struct kobject *kobj,
-					     struct bin_attribute *attr, int i)
+					     const struct bin_attribute *attr, int i)
 {
 	struct device *dev = kobj_to_dev(kobj);
 	struct scsi_device *sdev = to_scsi_device(dev);

drivers/uio/uio_hv_generic.c

···
  * The ring buffer is allocated as contiguous memory by vmbus_open
  */
 static int hv_uio_ring_mmap(struct file *filp, struct kobject *kobj,
-			    struct bin_attribute *attr,
+			    const struct bin_attribute *attr,
 			    struct vm_area_struct *vma)
 {
 	struct vmbus_channel *channel

drivers/usb/core/sysfs.c

···
 };
 
 static umode_t dev_bin_attrs_are_visible(struct kobject *kobj,
-		struct bin_attribute *a, int n)
+		const struct bin_attribute *a, int n)
 {
 	struct device *dev = kobj_to_dev(kobj);
 	struct usb_device *udev = to_usb_device(dev);

fs/sysfs/file.c

···
 			count = size - pos;
 	}
 
-	if (!battr->read)
+	if (!battr->read && !battr->read_new)
 		return -EIO;
+
+	if (battr->read_new)
+		return battr->read_new(of->file, kobj, battr, buf, pos, count);
 
 	return battr->read(of->file, kobj, battr, buf, pos, count);
 }
···
 	if (!count)
 		return 0;
 
-	if (!battr->write)
+	if (!battr->write && !battr->write_new)
 		return -EIO;
+
+	if (battr->write_new)
+		return battr->write_new(of->file, kobj, battr, buf, pos, count);
 
 	return battr->write(of->file, kobj, battr, buf, pos, count);
 }
···
 }
 
 int sysfs_add_bin_file_mode_ns(struct kernfs_node *parent,
-		const struct bin_attribute *battr, umode_t mode,
+		const struct bin_attribute *battr, umode_t mode, size_t size,
 		kuid_t uid, kgid_t gid, const void *ns)
 {
 	const struct attribute *attr = &battr->attr;
···
 	const struct kernfs_ops *ops;
 	struct kernfs_node *kn;
 
+	if (battr->read && battr->read_new)
+		return -EINVAL;
+
+	if (battr->write && battr->write_new)
+		return -EINVAL;
+
 	if (battr->mmap)
 		ops = &sysfs_bin_kfops_mmap;
-	else if (battr->read && battr->write)
+	else if ((battr->read || battr->read_new) && (battr->write || battr->write_new))
 		ops = &sysfs_bin_kfops_rw;
-	else if (battr->read)
+	else if (battr->read || battr->read_new)
 		ops = &sysfs_bin_kfops_ro;
-	else if (battr->write)
+	else if (battr->write || battr->write_new)
 		ops = &sysfs_bin_kfops_wo;
 	else
 		ops = &sysfs_file_kfops_empty;
···
 #endif
 
 	kn = __kernfs_create_file(parent, attr->name, mode & 0777, uid, gid,
-				  battr->size, ops, (void *)attr, ns, key);
+				  size, ops, (void *)attr, ns, key);
 	if (IS_ERR(kn)) {
 		if (PTR_ERR(kn) == -EEXIST)
 			sysfs_warn_dup(parent, attr->name);
···
 		return -EINVAL;
 
 	kobject_get_ownership(kobj, &uid, &gid);
-	return sysfs_add_bin_file_mode_ns(kobj->sd, attr, attr->attr.mode, uid,
-					   gid, NULL);
+	return sysfs_add_bin_file_mode_ns(kobj->sd, attr, attr->attr.mode,
+					  attr->size, uid, gid, NULL);
 }
 EXPORT_SYMBOL_GPL(sysfs_create_bin_file);
 

fs/sysfs/group.c

···
 	if (grp->bin_attrs) {
 		for (i = 0, bin_attr = grp->bin_attrs; *bin_attr; i++, bin_attr++) {
 			umode_t mode = (*bin_attr)->attr.mode;
+			size_t size = (*bin_attr)->size;
 
 			if (update)
 				kernfs_remove_by_name(parent,
···
 				if (!mode)
 					continue;
 			}
+			if (grp->bin_size)
+				size = grp->bin_size(kobj, *bin_attr, i);
 
 			WARN(mode & ~(SYSFS_PREALLOC | 0664),
 			     "Attribute %s: Invalid permissions 0%o\n",
···
 
 			mode &= SYSFS_PREALLOC | 0664;
 			error = sysfs_add_bin_file_mode_ns(parent, *bin_attr,
-							   mode, uid, gid,
+							   mode, size, uid, gid,
 							   NULL);
 			if (error)
 				break;

fs/sysfs/sysfs.h

···
 		const struct attribute *attr, umode_t amode, kuid_t uid,
 		kgid_t gid, const void *ns);
 int sysfs_add_bin_file_mode_ns(struct kernfs_node *parent,
-		const struct bin_attribute *battr, umode_t mode,
+		const struct bin_attribute *battr, umode_t mode, size_t size,
 		kuid_t uid, kgid_t gid, const void *ns);
 
 /*

include/linux/auxiliary_bus.h

···
 #define module_auxiliary_driver(__auxiliary_driver) \
 	module_driver(__auxiliary_driver, auxiliary_driver_register, auxiliary_driver_unregister)
 
-struct auxiliary_device *auxiliary_find_device(struct device *start,
-					       const void *data,
-					       device_match_t match);
-
 #endif /* _AUXILIARY_BUS_H_ */

include/linux/list.h

···
 	for (pos = (head)->next; !list_is_head(pos, (head)); pos = pos->next)
 
 /**
- * list_for_each_reverse - iterate backwards over a list
- * @pos:	the &struct list_head to use as a loop cursor.
- * @head:	the head for your list.
- */
-#define list_for_each_reverse(pos, head) \
-	for (pos = (head)->prev; pos != (head); pos = pos->prev)
-
-/**
  * list_for_each_rcu - Iterate over a list in an RCU-safe fashion
  * @pos:	the &struct list_head to use as a loop cursor.
  * @head:	the head for your list.

include/linux/sysfs.h

···
  *		SYSFS_GROUP_VISIBLE() when assigning this callback to
  *		specify separate _group_visible() and _attr_visible()
  *		handlers.
+ * @bin_size:
+ *		Optional: Function to return the size of a binary attribute
+ *		of the group. Will be called repeatedly for each binary
+ *		attribute in the group. Overwrites the size field embedded
+ *		inside the attribute itself.
  * @attrs:	Pointer to NULL terminated list of attributes.
  * @bin_attrs:	Pointer to NULL terminated list of binary attributes.
  *		Either attrs or bin_attrs or both must be provided.
···
 	umode_t			(*is_visible)(struct kobject *,
 					      struct attribute *, int);
 	umode_t			(*is_bin_visible)(struct kobject *,
-						  struct bin_attribute *, int);
+						  const struct bin_attribute *, int);
+	size_t			(*bin_size)(struct kobject *,
+					    const struct bin_attribute *,
+					    int);
 	struct attribute	**attrs;
-	struct bin_attribute	**bin_attrs;
+	union {
+		struct bin_attribute		**bin_attrs;
+		const struct bin_attribute	*const *bin_attrs_new;
+	};
 };
 
 #define SYSFS_PREALLOC		010000
···
  * attributes, the group visibility is determined by the function
  * specified to is_visible() not is_bin_visible()
  */
-#define DEFINE_SYSFS_BIN_GROUP_VISIBLE(name)                             \
-	static inline umode_t sysfs_group_visible_##name(                \
-		struct kobject *kobj, struct bin_attribute *attr, int n) \
-	{                                                                \
-		if (n == 0 && !name##_group_visible(kobj))               \
-			return SYSFS_GROUP_INVISIBLE;                    \
-		return name##_attr_visible(kobj, attr, n);               \
+#define DEFINE_SYSFS_BIN_GROUP_VISIBLE(name)                                   \
+	static inline umode_t sysfs_group_visible_##name(                      \
+		struct kobject *kobj, const struct bin_attribute *attr, int n) \
+	{                                                                      \
+		if (n == 0 && !name##_group_visible(kobj))                     \
+			return SYSFS_GROUP_INVISIBLE;                          \
+		return name##_attr_visible(kobj, attr, n);                     \
 	}
 
-#define DEFINE_SIMPLE_SYSFS_BIN_GROUP_VISIBLE(name)                   \
-	static inline umode_t sysfs_group_visible_##name(             \
-		struct kobject *kobj, struct bin_attribute *a, int n) \
-	{                                                             \
-		if (n == 0 && !name##_group_visible(kobj))            \
-			return SYSFS_GROUP_INVISIBLE;                 \
-		return a->mode;                                       \
+#define DEFINE_SIMPLE_SYSFS_BIN_GROUP_VISIBLE(name)                         \
+	static inline umode_t sysfs_group_visible_##name(                   \
+		struct kobject *kobj, const struct bin_attribute *a, int n) \
+	{                                                                   \
+		if (n == 0 && !name##_group_visible(kobj))                  \
+			return SYSFS_GROUP_INVISIBLE;                       \
+		return a->mode;                                             \
 	}
 
 #define SYSFS_GROUP_VISIBLE(fn) sysfs_group_visible_##fn
···
 	struct address_space *(*f_mapping)(void);
 	ssize_t (*read)(struct file *, struct kobject *, struct bin_attribute *,
 			char *, loff_t, size_t);
+	ssize_t (*read_new)(struct file *, struct kobject *, const struct bin_attribute *,
+			    char *, loff_t, size_t);
 	ssize_t (*write)(struct file *, struct kobject *, struct bin_attribute *,
 			 char *, loff_t, size_t);
-	loff_t (*llseek)(struct file *, struct kobject *, struct bin_attribute *,
+	ssize_t (*write_new)(struct file *, struct kobject *,
+			     const struct bin_attribute *, char *, loff_t, size_t);
+	loff_t (*llseek)(struct file *, struct kobject *, const struct bin_attribute *,
 			 loff_t, int);
-	int (*mmap)(struct file *, struct kobject *, struct bin_attribute *attr,
+	int (*mmap)(struct file *, struct kobject *, const struct bin_attribute *attr,
 		    struct vm_area_struct *vma);
 };
 
···
  */
 #define sysfs_bin_attr_init(bin_attr) sysfs_attr_init(&(bin_attr)->attr)
 
+typedef ssize_t __sysfs_bin_rw_handler_new(struct file *, struct kobject *,
+					   const struct bin_attribute *, char *, loff_t, size_t);
+
 /* macros to create static binary attributes easier */
 #define __BIN_ATTR(_name, _mode, _read, _write, _size) {		\
 	.attr = { .name = __stringify(_name), .mode = _mode },		\
-	.read	= _read,						\
-	.write	= _write,						\
+	.read = _Generic(_read,						\
+		__sysfs_bin_rw_handler_new * : NULL,			\
+		default : _read						\
+	),								\
+	.read_new = _Generic(_read,					\
+		__sysfs_bin_rw_handler_new * : _read,			\
+		default : NULL						\
+	),								\
+	.write = _Generic(_write,					\
+		__sysfs_bin_rw_handler_new * : NULL,			\
+		default : _write					\
+	),								\
+	.write_new = _Generic(_write,					\
+		__sysfs_bin_rw_handler_new * : _write,			\
+		default : NULL						\
+	),								\
 	.size	= _size,						\
 }
 
-#define __BIN_ATTR_RO(_name, _size) {					\
-	.attr	= { .name = __stringify(_name), .mode = 0444 },		\
-	.read	= _name##_read,						\
-	.size	= _size,						\
-}
+#define __BIN_ATTR_RO(_name, _size)					\
+	__BIN_ATTR(_name, 0444, _name##_read, NULL, _size)
 
-#define __BIN_ATTR_WO(_name, _size) {					\
-	.attr	= { .name = __stringify(_name), .mode = 0200 },		\
-	.write	= _name##_write,					\
-	.size	= _size,						\
-}
+#define __BIN_ATTR_WO(_name, _size)					\
+	__BIN_ATTR(_name, 0200, NULL, _name##_write, _size)
 
 #define __BIN_ATTR_RW(_name, _size)					\
 	__BIN_ATTR(_name, 0644, _name##_read, _name##_write, _size)
···
 struct bin_attribute bin_attr_##_name = __BIN_ATTR_RW(_name, _size)
 
 
-#define __BIN_ATTR_ADMIN_RO(_name, _size) {					\
-	.attr	= { .name = __stringify(_name), .mode = 0400 },		\
-	.read	= _name##_read,						\
-	.size	= _size,						\
-}
+#define __BIN_ATTR_ADMIN_RO(_name, _size)				\
+	__BIN_ATTR(_name, 0400, _name##_read, NULL, _size)
 
 #define __BIN_ATTR_ADMIN_RW(_name, _size)					\
 	__BIN_ATTR(_name, 0600, _name##_read, _name##_write, _size)
···
 #define BIN_ATTR_ADMIN_RW(_name, _size)					\
 struct bin_attribute bin_attr_##_name = __BIN_ATTR_ADMIN_RW(_name, _size)
 
-#define __BIN_ATTR_SIMPLE_RO(_name, _mode) {				\
-	.attr	= { .name = __stringify(_name), .mode = _mode },	\
-	.read	= sysfs_bin_attr_simple_read,				\
-}
+#define __BIN_ATTR_SIMPLE_RO(_name, _mode)				\
+	__BIN_ATTR(_name, _mode, sysfs_bin_attr_simple_read, NULL, 0)
 
 #define BIN_ATTR_SIMPLE_RO(_name)					\
 struct bin_attribute bin_attr_##_name = __BIN_ATTR_SIMPLE_RO(_name, 0444)

kernel/cpu.c

···
 static const struct attribute_group cpuhp_cpu_attr_group = {
 	.attrs = cpuhp_cpu_attrs,
 	.name = "hotplug",
-	NULL
 };
 
 static ssize_t states_show(struct device *dev,
···
 static const struct attribute_group cpuhp_cpu_root_attr_group = {
 	.attrs = cpuhp_cpu_root_attrs,
 	.name = "hotplug",
-	NULL
 };
 
 #ifdef CONFIG_HOTPLUG_SMT
···
 static const struct attribute_group cpuhp_smt_attr_group = {
 	.attrs = cpuhp_smt_attrs,
 	.name = "smt",
-	NULL
 };
 
 static int __init cpu_smt_sysfs_init(void)

lib/devres.c

···
  */
 void devm_iounmap(struct device *dev, void __iomem *addr)
 {
-	WARN_ON(devres_destroy(dev, devm_ioremap_release, devm_ioremap_match,
+	WARN_ON(devres_release(dev, devm_ioremap_release, devm_ioremap_match,
 			       (__force void *)addr));
-	iounmap(addr);
 }
 EXPORT_SYMBOL(devm_iounmap);
 
···
  */
 void devm_ioport_unmap(struct device *dev, void __iomem *addr)
 {
-	ioport_unmap(addr);
-	WARN_ON(devres_destroy(dev, devm_ioport_map_release,
+	WARN_ON(devres_release(dev, devm_ioport_map_release,
 			       devm_ioport_map_match, (__force void *)addr));
 }
 EXPORT_SYMBOL(devm_ioport_unmap);