summaryrefslogtreecommitdiff
path: root/drivers/base
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/base')
-rw-r--r--drivers/base/Makefile2
-rw-r--r--drivers/base/bus.c19
-rw-r--r--drivers/base/component.c12
-rw-r--r--drivers/base/core.c66
-rw-r--r--drivers/base/dd.c19
-rw-r--r--drivers/base/devtmpfs.c1
-rw-r--r--drivers/base/memory.c89
-rw-r--r--drivers/base/platform-msi.c6
-rw-r--r--drivers/base/platform.c42
-rw-r--r--drivers/base/power/main.c3
-rw-r--r--drivers/base/power/runtime.c11
-rw-r--r--drivers/base/power/trace.c4
-rw-r--r--drivers/base/property.c513
-rw-r--r--drivers/base/regmap/regcache-rbtree.c12
-rw-r--r--drivers/base/regmap/regmap-debugfs.c12
-rw-r--r--drivers/base/regmap/regmap-irq.c142
-rw-r--r--drivers/base/swnode.c676
17 files changed, 933 insertions, 696 deletions
diff --git a/drivers/base/Makefile b/drivers/base/Makefile
index 704f44295810..157452080f3d 100644
--- a/drivers/base/Makefile
+++ b/drivers/base/Makefile
@@ -6,7 +6,7 @@ obj-y := component.o core.o bus.o dd.o syscore.o \
cpu.o firmware.o init.o map.o devres.o \
attribute_container.o transport_class.o \
topology.o container.o property.o cacheinfo.o \
- devcon.o
+ devcon.o swnode.o
obj-$(CONFIG_DEVTMPFS) += devtmpfs.o
obj-y += power/
obj-$(CONFIG_ISA_BUS_API) += isa.o
diff --git a/drivers/base/bus.c b/drivers/base/bus.c
index 8bfd27ec73d6..e06a57936cc9 100644
--- a/drivers/base/bus.c
+++ b/drivers/base/bus.c
@@ -31,6 +31,9 @@ static struct kset *system_kset;
#define to_drv_attr(_attr) container_of(_attr, struct driver_attribute, attr)
+#define DRIVER_ATTR_IGNORE_LOCKDEP(_name, _mode, _show, _store) \
+ struct driver_attribute driver_attr_##_name = \
+ __ATTR_IGNORE_LOCKDEP(_name, _mode, _show, _store)
static int __must_check bus_rescan_devices_helper(struct device *dev,
void *data);
@@ -195,7 +198,7 @@ static ssize_t unbind_store(struct device_driver *drv, const char *buf,
bus_put(bus);
return err;
}
-static DRIVER_ATTR_WO(unbind);
+static DRIVER_ATTR_IGNORE_LOCKDEP(unbind, S_IWUSR, NULL, unbind_store);
/*
* Manually attach a device to a driver.
@@ -231,7 +234,7 @@ static ssize_t bind_store(struct device_driver *drv, const char *buf,
bus_put(bus);
return err;
}
-static DRIVER_ATTR_WO(bind);
+static DRIVER_ATTR_IGNORE_LOCKDEP(bind, S_IWUSR, NULL, bind_store);
static ssize_t show_drivers_autoprobe(struct bus_type *bus, char *buf)
{
@@ -611,8 +614,10 @@ static void remove_probe_files(struct bus_type *bus)
static ssize_t uevent_store(struct device_driver *drv, const char *buf,
size_t count)
{
- kobject_synth_uevent(&drv->p->kobj, buf, count);
- return count;
+ int rc;
+
+ rc = kobject_synth_uevent(&drv->p->kobj, buf, count);
+ return rc ? rc : count;
}
static DRIVER_ATTR_WO(uevent);
@@ -828,8 +833,10 @@ static void klist_devices_put(struct klist_node *n)
static ssize_t bus_uevent_store(struct bus_type *bus,
const char *buf, size_t count)
{
- kobject_synth_uevent(&bus->p->subsys.kobj, buf, count);
- return count;
+ int rc;
+
+ rc = kobject_synth_uevent(&bus->p->subsys.kobj, buf, count);
+ return rc ? rc : count;
}
static BUS_ATTR(uevent, S_IWUSR, NULL, bus_uevent_store);
diff --git a/drivers/base/component.c b/drivers/base/component.c
index e8d676fad0c9..ddcea8739c12 100644
--- a/drivers/base/component.c
+++ b/drivers/base/component.c
@@ -85,17 +85,7 @@ static int component_devices_show(struct seq_file *s, void *data)
return 0;
}
-static int component_devices_open(struct inode *inode, struct file *file)
-{
- return single_open(file, component_devices_show, inode->i_private);
-}
-
-static const struct file_operations component_devices_fops = {
- .open = component_devices_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
-};
+DEFINE_SHOW_ATTRIBUTE(component_devices);
static int __init component_debug_init(void)
{
diff --git a/drivers/base/core.c b/drivers/base/core.c
index 04bbcd779e11..0073b09bb99f 100644
--- a/drivers/base/core.c
+++ b/drivers/base/core.c
@@ -8,6 +8,7 @@
* Copyright (c) 2006 Novell, Inc.
*/
+#include <linux/acpi.h>
#include <linux/device.h>
#include <linux/err.h>
#include <linux/fwnode.h>
@@ -728,6 +729,26 @@ static inline int device_is_not_partition(struct device *dev)
}
#endif
+static int
+device_platform_notify(struct device *dev, enum kobject_action action)
+{
+ int ret;
+
+ ret = acpi_platform_notify(dev, action);
+ if (ret)
+ return ret;
+
+ ret = software_node_notify(dev, action);
+ if (ret)
+ return ret;
+
+ if (platform_notify && action == KOBJ_ADD)
+ platform_notify(dev);
+ else if (platform_notify_remove && action == KOBJ_REMOVE)
+ platform_notify_remove(dev);
+ return 0;
+}
+
/**
* dev_driver_string - Return a device's driver name, if at all possible
* @dev: struct device to get the name of
@@ -794,10 +815,12 @@ ssize_t device_store_ulong(struct device *dev,
const char *buf, size_t size)
{
struct dev_ext_attribute *ea = to_ext_attr(attr);
- char *end;
- unsigned long new = simple_strtoul(buf, &end, 0);
- if (end == buf)
- return -EINVAL;
+ int ret;
+ unsigned long new;
+
+ ret = kstrtoul(buf, 0, &new);
+ if (ret)
+ return ret;
*(unsigned long *)(ea->var) = new;
/* Always return full write size even if we didn't consume all */
return size;
@@ -818,9 +841,14 @@ ssize_t device_store_int(struct device *dev,
const char *buf, size_t size)
{
struct dev_ext_attribute *ea = to_ext_attr(attr);
- char *end;
- long new = simple_strtol(buf, &end, 0);
- if (end == buf || new > INT_MAX || new < INT_MIN)
+ int ret;
+ long new;
+
+ ret = kstrtol(buf, 0, &new);
+ if (ret)
+ return ret;
+
+ if (new > INT_MAX || new < INT_MIN)
return -EINVAL;
*(int *)(ea->var) = new;
/* Always return full write size even if we didn't consume all */
@@ -890,8 +918,7 @@ static void device_release(struct kobject *kobj)
else if (dev->class && dev->class->dev_release)
dev->class->dev_release(dev);
else
- WARN(1, KERN_ERR "Device '%s' does not have a release() "
- "function, it is broken and must be fixed.\n",
+ WARN(1, KERN_ERR "Device '%s' does not have a release() function, it is broken and must be fixed. See Documentation/kobject.txt.\n",
dev_name(dev));
kfree(p);
}
@@ -1067,8 +1094,14 @@ out:
static ssize_t uevent_store(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
- if (kobject_synth_uevent(&dev->kobj, buf, count))
+ int rc;
+
+ rc = kobject_synth_uevent(&dev->kobj, buf, count);
+
+ if (rc) {
dev_err(dev, "uevent: failed to send synthetic uevent\n");
+ return rc;
+ }
return count;
}
@@ -1883,8 +1916,9 @@ int device_add(struct device *dev)
}
/* notify platform of device entry */
- if (platform_notify)
- platform_notify(dev);
+ error = device_platform_notify(dev, KOBJ_ADD);
+ if (error)
+ goto platform_error;
error = device_create_file(dev, &dev_attr_uevent);
if (error)
@@ -1960,6 +1994,8 @@ done:
SymlinkError:
device_remove_file(dev, &dev_attr_uevent);
attrError:
+ device_platform_notify(dev, KOBJ_REMOVE);
+platform_error:
kobject_uevent(&dev->kobj, KOBJ_REMOVE);
glue_dir = get_glue_dir(dev);
kobject_del(&dev->kobj);
@@ -2077,14 +2113,10 @@ void device_del(struct device *dev)
bus_remove_device(dev);
device_pm_remove(dev);
driver_deferred_probe_del(dev);
+ device_platform_notify(dev, KOBJ_REMOVE);
device_remove_properties(dev);
device_links_purge(dev);
- /* Notify the platform of the removal, in case they
- * need to do anything...
- */
- if (platform_notify_remove)
- platform_notify_remove(dev);
if (dev->bus)
blocking_notifier_call_chain(&dev->bus->p->bus_notifier,
BUS_NOTIFY_REMOVED_DEVICE, dev);
diff --git a/drivers/base/dd.c b/drivers/base/dd.c
index 169412ee4ae8..8ac10af17c00 100644
--- a/drivers/base/dd.c
+++ b/drivers/base/dd.c
@@ -179,7 +179,7 @@ static void driver_deferred_probe_trigger(void)
}
/**
- * device_block_probing() - Block/defere device's probes
+ * device_block_probing() - Block/defer device's probes
*
* It will disable probing of devices and defer their probes instead.
*/
@@ -223,7 +223,10 @@ DEFINE_SHOW_ATTRIBUTE(deferred_devs);
static int deferred_probe_timeout = -1;
static int __init deferred_probe_timeout_setup(char *str)
{
- deferred_probe_timeout = simple_strtol(str, NULL, 10);
+ int timeout;
+
+ if (!kstrtoint(str, 10, &timeout))
+ deferred_probe_timeout = timeout;
return 1;
}
__setup("deferred_probe_timeout=", deferred_probe_timeout_setup);
@@ -453,7 +456,7 @@ static int really_probe(struct device *dev, struct device_driver *drv)
if (defer_all_probes) {
/*
* Value of defer_all_probes can be set only by
- * device_defer_all_probes_enable() which, in turn, will call
+ * device_block_probing() which, in turn, will call
* wait_for_device_probe() right after that to avoid any races.
*/
dev_dbg(dev, "Driver %s force probe deferral\n", drv->name);
@@ -928,16 +931,13 @@ static void __device_release_driver(struct device *dev, struct device *parent)
drv = dev->driver;
if (drv) {
- if (driver_allows_async_probing(drv))
- async_synchronize_full();
-
while (device_links_busy(dev)) {
device_unlock(dev);
- if (parent)
+ if (parent && dev->bus->need_parent_lock)
device_unlock(parent);
device_links_unbind_consumers(dev);
- if (parent)
+ if (parent && dev->bus->need_parent_lock)
device_lock(parent);
device_lock(dev);
@@ -1036,6 +1036,9 @@ void driver_detach(struct device_driver *drv)
struct device_private *dev_prv;
struct device *dev;
+ if (driver_allows_async_probing(drv))
+ async_synchronize_full();
+
for (;;) {
spin_lock(&drv->p->klist_devices.k_lock);
if (list_empty(&drv->p->klist_devices.k_list)) {
diff --git a/drivers/base/devtmpfs.c b/drivers/base/devtmpfs.c
index b93fc862d365..0dbc43068eeb 100644
--- a/drivers/base/devtmpfs.c
+++ b/drivers/base/devtmpfs.c
@@ -25,6 +25,7 @@
#include <linux/sched.h>
#include <linux/slab.h>
#include <linux/kthread.h>
+#include <uapi/linux/mount.h>
#include "base.h"
static struct task_struct *thread;
diff --git a/drivers/base/memory.c b/drivers/base/memory.c
index 0e5985682642..048cbf7d5233 100644
--- a/drivers/base/memory.c
+++ b/drivers/base/memory.c
@@ -109,8 +109,8 @@ static unsigned long get_memory_block_size(void)
* uses.
*/
-static ssize_t show_mem_start_phys_index(struct device *dev,
- struct device_attribute *attr, char *buf)
+static ssize_t phys_index_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
{
struct memory_block *mem = to_memory_block(dev);
unsigned long phys_index;
@@ -122,8 +122,8 @@ static ssize_t show_mem_start_phys_index(struct device *dev,
/*
* Show whether the section of memory is likely to be hot-removable
*/
-static ssize_t show_mem_removable(struct device *dev,
- struct device_attribute *attr, char *buf)
+static ssize_t removable_show(struct device *dev, struct device_attribute *attr,
+ char *buf)
{
unsigned long i, pfn;
int ret = 1;
@@ -146,8 +146,8 @@ out:
/*
* online, offline, going offline, etc.
*/
-static ssize_t show_mem_state(struct device *dev,
- struct device_attribute *attr, char *buf)
+static ssize_t state_show(struct device *dev, struct device_attribute *attr,
+ char *buf)
{
struct memory_block *mem = to_memory_block(dev);
ssize_t len = 0;
@@ -207,15 +207,15 @@ static bool pages_correctly_probed(unsigned long start_pfn)
return false;
if (!present_section_nr(section_nr)) {
- pr_warn("section %ld pfn[%lx, %lx) not present",
+ pr_warn("section %ld pfn[%lx, %lx) not present\n",
section_nr, pfn, pfn + PAGES_PER_SECTION);
return false;
} else if (!valid_section_nr(section_nr)) {
- pr_warn("section %ld pfn[%lx, %lx) no valid memmap",
+ pr_warn("section %ld pfn[%lx, %lx) no valid memmap\n",
section_nr, pfn, pfn + PAGES_PER_SECTION);
return false;
} else if (online_section_nr(section_nr)) {
- pr_warn("section %ld pfn[%lx, %lx) is already online",
+ pr_warn("section %ld pfn[%lx, %lx) is already online\n",
section_nr, pfn, pfn + PAGES_PER_SECTION);
return false;
}
@@ -286,7 +286,7 @@ static int memory_subsys_online(struct device *dev)
return 0;
/*
- * If we are called from store_mem_state(), online_type will be
+ * If we are called from state_store(), online_type will be
* set >= 0 Otherwise we were called from the device online
* attribute and need to set the online_type.
*/
@@ -315,9 +315,8 @@ static int memory_subsys_offline(struct device *dev)
return memory_block_change_state(mem, MEM_OFFLINE, MEM_ONLINE);
}
-static ssize_t
-store_mem_state(struct device *dev,
- struct device_attribute *attr, const char *buf, size_t count)
+static ssize_t state_store(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
{
struct memory_block *mem = to_memory_block(dev);
int ret, online_type;
@@ -374,7 +373,7 @@ err:
* s.t. if I offline all of these sections I can then
* remove the physical device?
*/
-static ssize_t show_phys_device(struct device *dev,
+static ssize_t phys_device_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct memory_block *mem = to_memory_block(dev);
@@ -395,7 +394,7 @@ static void print_allowed_zone(char *buf, int nid, unsigned long start_pfn,
}
}
-static ssize_t show_valid_zones(struct device *dev,
+static ssize_t valid_zones_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct memory_block *mem = to_memory_block(dev);
@@ -435,33 +434,31 @@ out:
return strlen(buf);
}
-static DEVICE_ATTR(valid_zones, 0444, show_valid_zones, NULL);
+static DEVICE_ATTR_RO(valid_zones);
#endif
-static DEVICE_ATTR(phys_index, 0444, show_mem_start_phys_index, NULL);
-static DEVICE_ATTR(state, 0644, show_mem_state, store_mem_state);
-static DEVICE_ATTR(phys_device, 0444, show_phys_device, NULL);
-static DEVICE_ATTR(removable, 0444, show_mem_removable, NULL);
+static DEVICE_ATTR_RO(phys_index);
+static DEVICE_ATTR_RW(state);
+static DEVICE_ATTR_RO(phys_device);
+static DEVICE_ATTR_RO(removable);
/*
* Block size attribute stuff
*/
-static ssize_t
-print_block_size(struct device *dev, struct device_attribute *attr,
- char *buf)
+static ssize_t block_size_bytes_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
{
return sprintf(buf, "%lx\n", get_memory_block_size());
}
-static DEVICE_ATTR(block_size_bytes, 0444, print_block_size, NULL);
+static DEVICE_ATTR_RO(block_size_bytes);
/*
* Memory auto online policy.
*/
-static ssize_t
-show_auto_online_blocks(struct device *dev, struct device_attribute *attr,
- char *buf)
+static ssize_t auto_online_blocks_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
{
if (memhp_auto_online)
return sprintf(buf, "online\n");
@@ -469,9 +466,9 @@ show_auto_online_blocks(struct device *dev, struct device_attribute *attr,
return sprintf(buf, "offline\n");
}
-static ssize_t
-store_auto_online_blocks(struct device *dev, struct device_attribute *attr,
- const char *buf, size_t count)
+static ssize_t auto_online_blocks_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
{
if (sysfs_streq(buf, "online"))
memhp_auto_online = true;
@@ -483,8 +480,7 @@ store_auto_online_blocks(struct device *dev, struct device_attribute *attr,
return count;
}
-static DEVICE_ATTR(auto_online_blocks, 0644, show_auto_online_blocks,
- store_auto_online_blocks);
+static DEVICE_ATTR_RW(auto_online_blocks);
/*
* Some architectures will have custom drivers to do this, and
@@ -493,9 +489,8 @@ static DEVICE_ATTR(auto_online_blocks, 0644, show_auto_online_blocks,
* and will require this interface.
*/
#ifdef CONFIG_ARCH_MEMORY_PROBE
-static ssize_t
-memory_probe_store(struct device *dev, struct device_attribute *attr,
- const char *buf, size_t count)
+static ssize_t probe_store(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
{
u64 phys_addr;
int nid, ret;
@@ -525,7 +520,7 @@ out:
return ret;
}
-static DEVICE_ATTR(probe, S_IWUSR, NULL, memory_probe_store);
+static DEVICE_ATTR_WO(probe);
#endif
#ifdef CONFIG_MEMORY_FAILURE
@@ -534,10 +529,9 @@ static DEVICE_ATTR(probe, S_IWUSR, NULL, memory_probe_store);
*/
/* Soft offline a page */
-static ssize_t
-store_soft_offline_page(struct device *dev,
- struct device_attribute *attr,
- const char *buf, size_t count)
+static ssize_t soft_offline_page_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
{
int ret;
u64 pfn;
@@ -553,10 +547,9 @@ store_soft_offline_page(struct device *dev,
}
/* Forcibly offline a page, including killing processes. */
-static ssize_t
-store_hard_offline_page(struct device *dev,
- struct device_attribute *attr,
- const char *buf, size_t count)
+static ssize_t hard_offline_page_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
{
int ret;
u64 pfn;
@@ -569,8 +562,8 @@ store_hard_offline_page(struct device *dev,
return ret ? ret : count;
}
-static DEVICE_ATTR(soft_offline_page, S_IWUSR, NULL, store_soft_offline_page);
-static DEVICE_ATTR(hard_offline_page, S_IWUSR, NULL, store_hard_offline_page);
+static DEVICE_ATTR_WO(soft_offline_page);
+static DEVICE_ATTR_WO(hard_offline_page);
#endif
/*
@@ -688,7 +681,7 @@ static int add_memory_block(int base_section_nr)
int i, ret, section_count = 0, section_nr;
for (i = base_section_nr;
- (i < base_section_nr + sections_per_block) && i < NR_MEM_SECTIONS;
+ i < base_section_nr + sections_per_block;
i++) {
if (!present_section_nr(i))
continue;
@@ -739,7 +732,7 @@ unregister_memory(struct memory_block *memory)
{
BUG_ON(memory->dev.bus != &memory_subsys);
- /* drop the ref. we got in remove_memory_block() */
+ /* drop the ref. we got in remove_memory_section() */
put_device(&memory->dev);
device_unregister(&memory->dev);
}
diff --git a/drivers/base/platform-msi.c b/drivers/base/platform-msi.c
index f39a920496fb..8da314b81eab 100644
--- a/drivers/base/platform-msi.c
+++ b/drivers/base/platform-msi.c
@@ -368,14 +368,16 @@ void platform_msi_domain_free(struct irq_domain *domain, unsigned int virq,
unsigned int nvec)
{
struct platform_msi_priv_data *data = domain->host_data;
- struct msi_desc *desc;
- for_each_msi_entry(desc, data->dev) {
+ struct msi_desc *desc, *tmp;
+ for_each_msi_entry_safe(desc, tmp, data->dev) {
if (WARN_ON(!desc->irq || desc->nvec_used != 1))
return;
if (!(desc->irq >= virq && desc->irq < (virq + nvec)))
continue;
irq_domain_free_irqs_common(domain, desc->irq, 1);
+ list_del(&desc->list);
+ free_msi_entry(desc);
}
}
diff --git a/drivers/base/platform.c b/drivers/base/platform.c
index 41b91af95afb..1c958eb33ef4 100644
--- a/drivers/base/platform.c
+++ b/drivers/base/platform.c
@@ -26,6 +26,7 @@
#include <linux/clk/clk-conf.h>
#include <linux/limits.h>
#include <linux/property.h>
+#include <linux/kmemleak.h>
#include "base.h"
#include "power/power.h"
@@ -234,7 +235,7 @@ struct platform_object {
*/
void platform_device_put(struct platform_device *pdev)
{
- if (pdev)
+ if (!IS_ERR_OR_NULL(pdev))
put_device(&pdev->dev);
}
EXPORT_SYMBOL_GPL(platform_device_put);
@@ -447,8 +448,7 @@ void platform_device_del(struct platform_device *pdev)
{
int i;
- if (pdev) {
- device_remove_properties(&pdev->dev);
+ if (!IS_ERR_OR_NULL(pdev)) {
device_del(&pdev->dev);
if (pdev->id_auto) {
@@ -525,6 +525,8 @@ struct platform_device *platform_device_register_full(
if (!pdev->dev.dma_mask)
goto err;
+ kmemleak_ignore(pdev->dev.dma_mask);
+
*pdev->dev.dma_mask = pdevinfo->dma_mask;
pdev->dev.coherent_dma_mask = pdevinfo->dma_mask;
}
@@ -1138,8 +1140,7 @@ int platform_dma_configure(struct device *dev)
ret = of_dma_configure(dev, dev->of_node, true);
} else if (has_acpi_companion(dev)) {
attr = acpi_get_dma_attr(to_acpi_device_node(dev->fwnode));
- if (attr != DEV_DMA_NOT_SUPPORTED)
- ret = acpi_dma_configure(dev, attr);
+ ret = acpi_dma_configure(dev, attr);
}
return ret;
@@ -1179,37 +1180,6 @@ int __init platform_bus_init(void)
return error;
}
-#ifndef ARCH_HAS_DMA_GET_REQUIRED_MASK
-static u64 dma_default_get_required_mask(struct device *dev)
-{
- u32 low_totalram = ((max_pfn - 1) << PAGE_SHIFT);
- u32 high_totalram = ((max_pfn - 1) >> (32 - PAGE_SHIFT));
- u64 mask;
-
- if (!high_totalram) {
- /* convert to mask just covering totalram */
- low_totalram = (1 << (fls(low_totalram) - 1));
- low_totalram += low_totalram - 1;
- mask = low_totalram;
- } else {
- high_totalram = (1 << (fls(high_totalram) - 1));
- high_totalram += high_totalram - 1;
- mask = (((u64)high_totalram) << 32) + 0xffffffff;
- }
- return mask;
-}
-
-u64 dma_get_required_mask(struct device *dev)
-{
- const struct dma_map_ops *ops = get_dma_ops(dev);
-
- if (ops->get_required_mask)
- return ops->get_required_mask(dev);
- return dma_default_get_required_mask(dev);
-}
-EXPORT_SYMBOL_GPL(dma_get_required_mask);
-#endif
-
static __initdata LIST_HEAD(early_platform_driver_list);
static __initdata LIST_HEAD(early_platform_device_list);
diff --git a/drivers/base/power/main.c b/drivers/base/power/main.c
index a690fd400260..0992e67e862b 100644
--- a/drivers/base/power/main.c
+++ b/drivers/base/power/main.c
@@ -32,6 +32,7 @@
#include <trace/events/power.h>
#include <linux/cpufreq.h>
#include <linux/cpuidle.h>
+#include <linux/devfreq.h>
#include <linux/timer.h>
#include "../base.h"
@@ -1078,6 +1079,7 @@ void dpm_resume(pm_message_t state)
dpm_show_time(starttime, state, 0, NULL);
cpufreq_resume();
+ devfreq_resume();
trace_suspend_resume(TPS("dpm_resume"), state.event, false);
}
@@ -1852,6 +1854,7 @@ int dpm_suspend(pm_message_t state)
trace_suspend_resume(TPS("dpm_suspend"), state.event, true);
might_sleep();
+ devfreq_suspend();
cpufreq_suspend();
mutex_lock(&dpm_list_mtx);
diff --git a/drivers/base/power/runtime.c b/drivers/base/power/runtime.c
index 70624695b6d5..457be03b744d 100644
--- a/drivers/base/power/runtime.c
+++ b/drivers/base/power/runtime.c
@@ -121,7 +121,7 @@ static void pm_runtime_cancel_pending(struct device *dev)
* Compute the autosuspend-delay expiration time based on the device's
* power.last_busy time. If the delay has already expired or is disabled
* (negative) or the power.use_autosuspend flag isn't set, return 0.
- * Otherwise return the expiration time in jiffies (adjusted to be nonzero).
+ * Otherwise return the expiration time in nanoseconds (adjusted to be nonzero).
*
* This function may be called either with or without dev->power.lock held.
* Either way it can be racy, since power.last_busy may be updated at any time.
@@ -141,7 +141,7 @@ u64 pm_runtime_autosuspend_expiration(struct device *dev)
last_busy = READ_ONCE(dev->power.last_busy);
- expires = last_busy + autosuspend_delay * NSEC_PER_MSEC;
+ expires = last_busy + (u64)autosuspend_delay * NSEC_PER_MSEC;
if (expires <= now)
expires = 0; /* Already expired. */
@@ -525,7 +525,7 @@ static int rpm_suspend(struct device *dev, int rpmflags)
* We add a slack of 25% to gather wakeups
* without sacrificing the granularity.
*/
- u64 slack = READ_ONCE(dev->power.autosuspend_delay) *
+ u64 slack = (u64)READ_ONCE(dev->power.autosuspend_delay) *
(NSEC_PER_MSEC >> 2);
dev->power.timer_expires = expires;
@@ -905,7 +905,10 @@ static enum hrtimer_restart pm_suspend_timer_fn(struct hrtimer *timer)
spin_lock_irqsave(&dev->power.lock, flags);
expires = dev->power.timer_expires;
- /* If 'expire' is after 'jiffies' we've been called too early. */
+ /*
+ * If 'expires' is after the current time, we've been called
+ * too early.
+ */
if (expires > 0 && expires < ktime_to_ns(ktime_get())) {
dev->power.timer_expires = 0;
rpm_suspend(dev, dev->power.timer_autosuspends ?
diff --git a/drivers/base/power/trace.c b/drivers/base/power/trace.c
index 1cda505d6a85..b11f47a1e819 100644
--- a/drivers/base/power/trace.c
+++ b/drivers/base/power/trace.c
@@ -118,9 +118,7 @@ static unsigned int read_magic_time(void)
unsigned int val;
mc146818_get_time(&time);
- pr_info("RTC time: %2d:%02d:%02d, date: %02d/%02d/%02d\n",
- time.tm_hour, time.tm_min, time.tm_sec,
- time.tm_mon + 1, time.tm_mday, time.tm_year % 100);
+ pr_info("RTC time: %ptRt, date: %ptRd\n", &time, &time);
val = time.tm_year; /* 100 years */
if (val > 100)
val -= 100;
diff --git a/drivers/base/property.c b/drivers/base/property.c
index 240ab5230ff6..8b91ab380d14 100644
--- a/drivers/base/property.c
+++ b/drivers/base/property.c
@@ -18,236 +18,6 @@
#include <linux/etherdevice.h>
#include <linux/phy.h>
-struct property_set {
- struct device *dev;
- struct fwnode_handle fwnode;
- const struct property_entry *properties;
-};
-
-static const struct fwnode_operations pset_fwnode_ops;
-
-static inline bool is_pset_node(const struct fwnode_handle *fwnode)
-{
- return !IS_ERR_OR_NULL(fwnode) && fwnode->ops == &pset_fwnode_ops;
-}
-
-#define to_pset_node(__fwnode) \
- ({ \
- typeof(__fwnode) __to_pset_node_fwnode = __fwnode; \
- \
- is_pset_node(__to_pset_node_fwnode) ? \
- container_of(__to_pset_node_fwnode, \
- struct property_set, fwnode) : \
- NULL; \
- })
-
-static const struct property_entry *
-pset_prop_get(const struct property_set *pset, const char *name)
-{
- const struct property_entry *prop;
-
- if (!pset || !pset->properties)
- return NULL;
-
- for (prop = pset->properties; prop->name; prop++)
- if (!strcmp(name, prop->name))
- return prop;
-
- return NULL;
-}
-
-static const void *property_get_pointer(const struct property_entry *prop)
-{
- switch (prop->type) {
- case DEV_PROP_U8:
- if (prop->is_array)
- return prop->pointer.u8_data;
- return &prop->value.u8_data;
- case DEV_PROP_U16:
- if (prop->is_array)
- return prop->pointer.u16_data;
- return &prop->value.u16_data;
- case DEV_PROP_U32:
- if (prop->is_array)
- return prop->pointer.u32_data;
- return &prop->value.u32_data;
- case DEV_PROP_U64:
- if (prop->is_array)
- return prop->pointer.u64_data;
- return &prop->value.u64_data;
- case DEV_PROP_STRING:
- if (prop->is_array)
- return prop->pointer.str;
- return &prop->value.str;
- default:
- return NULL;
- }
-}
-
-static void property_set_pointer(struct property_entry *prop, const void *pointer)
-{
- switch (prop->type) {
- case DEV_PROP_U8:
- if (prop->is_array)
- prop->pointer.u8_data = pointer;
- else
- prop->value.u8_data = *((u8 *)pointer);
- break;
- case DEV_PROP_U16:
- if (prop->is_array)
- prop->pointer.u16_data = pointer;
- else
- prop->value.u16_data = *((u16 *)pointer);
- break;
- case DEV_PROP_U32:
- if (prop->is_array)
- prop->pointer.u32_data = pointer;
- else
- prop->value.u32_data = *((u32 *)pointer);
- break;
- case DEV_PROP_U64:
- if (prop->is_array)
- prop->pointer.u64_data = pointer;
- else
- prop->value.u64_data = *((u64 *)pointer);
- break;
- case DEV_PROP_STRING:
- if (prop->is_array)
- prop->pointer.str = pointer;
- else
- prop->value.str = pointer;
- break;
- default:
- break;
- }
-}
-
-static const void *pset_prop_find(const struct property_set *pset,
- const char *propname, size_t length)
-{
- const struct property_entry *prop;
- const void *pointer;
-
- prop = pset_prop_get(pset, propname);
- if (!prop)
- return ERR_PTR(-EINVAL);
- pointer = property_get_pointer(prop);
- if (!pointer)
- return ERR_PTR(-ENODATA);
- if (length > prop->length)
- return ERR_PTR(-EOVERFLOW);
- return pointer;
-}
-
-static int pset_prop_read_u8_array(const struct property_set *pset,
- const char *propname,
- u8 *values, size_t nval)
-{
- const void *pointer;
- size_t length = nval * sizeof(*values);
-
- pointer = pset_prop_find(pset, propname, length);
- if (IS_ERR(pointer))
- return PTR_ERR(pointer);
-
- memcpy(values, pointer, length);
- return 0;
-}
-
-static int pset_prop_read_u16_array(const struct property_set *pset,
- const char *propname,
- u16 *values, size_t nval)
-{
- const void *pointer;
- size_t length = nval * sizeof(*values);
-
- pointer = pset_prop_find(pset, propname, length);
- if (IS_ERR(pointer))
- return PTR_ERR(pointer);
-
- memcpy(values, pointer, length);
- return 0;
-}
-
-static int pset_prop_read_u32_array(const struct property_set *pset,
- const char *propname,
- u32 *values, size_t nval)
-{
- const void *pointer;
- size_t length = nval * sizeof(*values);
-
- pointer = pset_prop_find(pset, propname, length);
- if (IS_ERR(pointer))
- return PTR_ERR(pointer);
-
- memcpy(values, pointer, length);
- return 0;
-}
-
-static int pset_prop_read_u64_array(const struct property_set *pset,
- const char *propname,
- u64 *values, size_t nval)
-{
- const void *pointer;
- size_t length = nval * sizeof(*values);
-
- pointer = pset_prop_find(pset, propname, length);
- if (IS_ERR(pointer))
- return PTR_ERR(pointer);
-
- memcpy(values, pointer, length);
- return 0;
-}
-
-static int pset_prop_count_elems_of_size(const struct property_set *pset,
- const char *propname, size_t length)
-{
- const struct property_entry *prop;
-
- prop = pset_prop_get(pset, propname);
- if (!prop)
- return -EINVAL;
-
- return prop->length / length;
-}
-
-static int pset_prop_read_string_array(const struct property_set *pset,
- const char *propname,
- const char **strings, size_t nval)
-{
- const struct property_entry *prop;
- const void *pointer;
- size_t array_len, length;
-
- /* Find out the array length. */
- prop = pset_prop_get(pset, propname);
- if (!prop)
- return -EINVAL;
-
- if (!prop->is_array)
- /* The array length for a non-array string property is 1. */
- array_len = 1;
- else
- /* Find the length of an array. */
- array_len = pset_prop_count_elems_of_size(pset, propname,
- sizeof(const char *));
-
- /* Return how many there are if strings is NULL. */
- if (!strings)
- return array_len;
-
- array_len = min(nval, array_len);
- length = array_len * sizeof(*strings);
-
- pointer = pset_prop_find(pset, propname, length);
- if (IS_ERR(pointer))
- return PTR_ERR(pointer);
-
- memcpy(strings, pointer, length);
-
- return array_len;
-}
-
struct fwnode_handle *dev_fwnode(struct device *dev)
{
return IS_ENABLED(CONFIG_OF) && dev->of_node ?
@@ -255,51 +25,6 @@ struct fwnode_handle *dev_fwnode(struct device *dev)
}
EXPORT_SYMBOL_GPL(dev_fwnode);
-static bool pset_fwnode_property_present(const struct fwnode_handle *fwnode,
- const char *propname)
-{
- return !!pset_prop_get(to_pset_node(fwnode), propname);
-}
-
-static int pset_fwnode_read_int_array(const struct fwnode_handle *fwnode,
- const char *propname,
- unsigned int elem_size, void *val,
- size_t nval)
-{
- const struct property_set *node = to_pset_node(fwnode);
-
- if (!val)
- return pset_prop_count_elems_of_size(node, propname, elem_size);
-
- switch (elem_size) {
- case sizeof(u8):
- return pset_prop_read_u8_array(node, propname, val, nval);
- case sizeof(u16):
- return pset_prop_read_u16_array(node, propname, val, nval);
- case sizeof(u32):
- return pset_prop_read_u32_array(node, propname, val, nval);
- case sizeof(u64):
- return pset_prop_read_u64_array(node, propname, val, nval);
- }
-
- return -ENXIO;
-}
-
-static int
-pset_fwnode_property_read_string_array(const struct fwnode_handle *fwnode,
- const char *propname,
- const char **val, size_t nval)
-{
- return pset_prop_read_string_array(to_pset_node(fwnode), propname,
- val, nval);
-}
-
-static const struct fwnode_operations pset_fwnode_ops = {
- .property_present = pset_fwnode_property_present,
- .property_read_int_array = pset_fwnode_read_int_array,
- .property_read_string_array = pset_fwnode_property_read_string_array,
-};
-
/**
* device_property_present - check if a property of a device is present
* @dev: Device whose property is being checked
@@ -759,223 +484,25 @@ int fwnode_property_get_reference_args(const struct fwnode_handle *fwnode,
}
EXPORT_SYMBOL_GPL(fwnode_property_get_reference_args);
-static void property_entry_free_data(const struct property_entry *p)
-{
- const void *pointer = property_get_pointer(p);
- size_t i, nval;
-
- if (p->is_array) {
- if (p->type == DEV_PROP_STRING && p->pointer.str) {
- nval = p->length / sizeof(const char *);
- for (i = 0; i < nval; i++)
- kfree(p->pointer.str[i]);
- }
- kfree(pointer);
- } else if (p->type == DEV_PROP_STRING) {
- kfree(p->value.str);
- }
- kfree(p->name);
-}
-
-static int property_copy_string_array(struct property_entry *dst,
- const struct property_entry *src)
-{
- const char **d;
- size_t nval = src->length / sizeof(*d);
- int i;
-
- d = kcalloc(nval, sizeof(*d), GFP_KERNEL);
- if (!d)
- return -ENOMEM;
-
- for (i = 0; i < nval; i++) {
- d[i] = kstrdup(src->pointer.str[i], GFP_KERNEL);
- if (!d[i] && src->pointer.str[i]) {
- while (--i >= 0)
- kfree(d[i]);
- kfree(d);
- return -ENOMEM;
- }
- }
-
- dst->pointer.str = d;
- return 0;
-}
-
-static int property_entry_copy_data(struct property_entry *dst,
- const struct property_entry *src)
-{
- const void *pointer = property_get_pointer(src);
- const void *new;
- int error;
-
- if (src->is_array) {
- if (!src->length)
- return -ENODATA;
-
- if (src->type == DEV_PROP_STRING) {
- error = property_copy_string_array(dst, src);
- if (error)
- return error;
- new = dst->pointer.str;
- } else {
- new = kmemdup(pointer, src->length, GFP_KERNEL);
- if (!new)
- return -ENOMEM;
- }
- } else if (src->type == DEV_PROP_STRING) {
- new = kstrdup(src->value.str, GFP_KERNEL);
- if (!new && src->value.str)
- return -ENOMEM;
- } else {
- new = pointer;
- }
-
- dst->length = src->length;
- dst->is_array = src->is_array;
- dst->type = src->type;
-
- property_set_pointer(dst, new);
-
- dst->name = kstrdup(src->name, GFP_KERNEL);
- if (!dst->name)
- goto out_free_data;
-
- return 0;
-
-out_free_data:
- property_entry_free_data(dst);
- return -ENOMEM;
-}
-
-/**
- * property_entries_dup - duplicate array of properties
- * @properties: array of properties to copy
- *
- * This function creates a deep copy of the given NULL-terminated array
- * of property entries.
- */
-struct property_entry *
-property_entries_dup(const struct property_entry *properties)
-{
- struct property_entry *p;
- int i, n = 0;
-
- while (properties[n].name)
- n++;
-
- p = kcalloc(n + 1, sizeof(*p), GFP_KERNEL);
- if (!p)
- return ERR_PTR(-ENOMEM);
-
- for (i = 0; i < n; i++) {
- int ret = property_entry_copy_data(&p[i], &properties[i]);
- if (ret) {
- while (--i >= 0)
- property_entry_free_data(&p[i]);
- kfree(p);
- return ERR_PTR(ret);
- }
- }
-
- return p;
-}
-EXPORT_SYMBOL_GPL(property_entries_dup);
-
-/**
- * property_entries_free - free previously allocated array of properties
- * @properties: array of properties to destroy
- *
- * This function frees given NULL-terminated array of property entries,
- * along with their data.
- */
-void property_entries_free(const struct property_entry *properties)
-{
- const struct property_entry *p;
-
- for (p = properties; p->name; p++)
- property_entry_free_data(p);
-
- kfree(properties);
-}
-EXPORT_SYMBOL_GPL(property_entries_free);
-
-/**
- * pset_free_set - releases memory allocated for copied property set
- * @pset: Property set to release
- *
- * Function takes previously copied property set and releases all the
- * memory allocated to it.
- */
-static void pset_free_set(struct property_set *pset)
-{
- if (!pset)
- return;
-
- property_entries_free(pset->properties);
- kfree(pset);
-}
-
-/**
- * pset_copy_set - copies property set
- * @pset: Property set to copy
- *
- * This function takes a deep copy of the given property set and returns
- * pointer to the copy. Call device_free_property_set() to free resources
- * allocated in this function.
- *
- * Return: Pointer to the new property set or error pointer.
- */
-static struct property_set *pset_copy_set(const struct property_set *pset)
-{
- struct property_entry *properties;
- struct property_set *p;
-
- p = kzalloc(sizeof(*p), GFP_KERNEL);
- if (!p)
- return ERR_PTR(-ENOMEM);
-
- properties = property_entries_dup(pset->properties);
- if (IS_ERR(properties)) {
- kfree(p);
- return ERR_CAST(properties);
- }
-
- p->properties = properties;
- return p;
-}
-
/**
* device_remove_properties - Remove properties from a device object.
* @dev: Device whose properties to remove.
*
* The function removes properties previously associated to the device
- * secondary firmware node with device_add_properties(). Memory allocated
- * to the properties will also be released.
+ * firmware node with device_add_properties(). Memory allocated to the
+ * properties will also be released.
*/
void device_remove_properties(struct device *dev)
{
- struct fwnode_handle *fwnode;
- struct property_set *pset;
+ struct fwnode_handle *fwnode = dev_fwnode(dev);
- fwnode = dev_fwnode(dev);
if (!fwnode)
return;
- /*
- * Pick either primary or secondary node depending which one holds
- * the pset. If there is no real firmware node (ACPI/DT) primary
- * will hold the pset.
- */
- pset = to_pset_node(fwnode);
- if (pset) {
- set_primary_fwnode(dev, NULL);
- } else {
- pset = to_pset_node(fwnode->secondary);
- if (pset && dev == pset->dev)
- set_secondary_fwnode(dev, NULL);
+
+ if (is_software_node(fwnode->secondary)) {
+ fwnode_remove_software_node(fwnode->secondary);
+ set_secondary_fwnode(dev, NULL);
}
- if (pset && dev == pset->dev)
- pset_free_set(pset);
}
EXPORT_SYMBOL_GPL(device_remove_properties);
@@ -985,26 +512,22 @@ EXPORT_SYMBOL_GPL(device_remove_properties);
* @properties: Collection of properties to add.
*
* Associate a collection of device properties represented by @properties with
- * @dev as its secondary firmware node. The function takes a copy of
- * @properties.
+ * @dev. The function takes a copy of @properties.
+ *
+ * WARNING: The callers should not use this function if it is known that there
+ * is no real firmware node associated with @dev! In that case the callers
+ * should create a software node and assign it to @dev directly.
*/
int device_add_properties(struct device *dev,
const struct property_entry *properties)
{
- struct property_set *p, pset;
-
- if (!properties)
- return -EINVAL;
-
- pset.properties = properties;
+ struct fwnode_handle *fwnode;
- p = pset_copy_set(&pset);
- if (IS_ERR(p))
- return PTR_ERR(p);
+ fwnode = fwnode_create_software_node(properties, NULL);
+ if (IS_ERR(fwnode))
+ return PTR_ERR(fwnode);
- p->fwnode.ops = &pset_fwnode_ops;
- set_secondary_fwnode(dev, &p->fwnode);
- p->dev = dev;
+ set_secondary_fwnode(dev, fwnode);
return 0;
}
EXPORT_SYMBOL_GPL(device_add_properties);
@@ -1341,7 +864,7 @@ int fwnode_irq_get(struct fwnode_handle *fwnode, unsigned int index)
EXPORT_SYMBOL(fwnode_irq_get);
/**
- * device_graph_get_next_endpoint - Get next endpoint firmware node
+ * fwnode_graph_get_next_endpoint - Get next endpoint firmware node
* @fwnode: Pointer to the parent firmware node
* @prev: Previous endpoint node or %NULL to get the first
*
diff --git a/drivers/base/regmap/regcache-rbtree.c b/drivers/base/regmap/regcache-rbtree.c
index b1e9aae9a5d0..2e8f0144f9ab 100644
--- a/drivers/base/regmap/regcache-rbtree.c
+++ b/drivers/base/regmap/regcache-rbtree.c
@@ -177,17 +177,7 @@ static int rbtree_show(struct seq_file *s, void *ignored)
return 0;
}
-static int rbtree_open(struct inode *inode, struct file *file)
-{
- return single_open(file, rbtree_show, inode->i_private);
-}
-
-static const struct file_operations rbtree_fops = {
- .open = rbtree_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
-};
+DEFINE_SHOW_ATTRIBUTE(rbtree);
static void rbtree_debugfs_init(struct regmap *map)
{
diff --git a/drivers/base/regmap/regmap-debugfs.c b/drivers/base/regmap/regmap-debugfs.c
index 87b562e49a43..19eb454f26c3 100644
--- a/drivers/base/regmap/regmap-debugfs.c
+++ b/drivers/base/regmap/regmap-debugfs.c
@@ -435,17 +435,7 @@ static int regmap_access_show(struct seq_file *s, void *ignored)
return 0;
}
-static int access_open(struct inode *inode, struct file *file)
-{
- return single_open(file, regmap_access_show, inode->i_private);
-}
-
-static const struct file_operations regmap_access_fops = {
- .open = access_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
-};
+DEFINE_SHOW_ATTRIBUTE(regmap_access);
static ssize_t regmap_cache_only_write_file(struct file *file,
const char __user *user_buf,
diff --git a/drivers/base/regmap/regmap-irq.c b/drivers/base/regmap/regmap-irq.c
index 429ca8ed7e51..1bd1145ad8b5 100644
--- a/drivers/base/regmap/regmap-irq.c
+++ b/drivers/base/regmap/regmap-irq.c
@@ -44,6 +44,8 @@ struct regmap_irq_chip_data {
unsigned int irq_reg_stride;
unsigned int type_reg_stride;
+
+ bool clear_status:1;
};
static inline const
@@ -77,6 +79,7 @@ static void regmap_irq_sync_unlock(struct irq_data *data)
int i, ret;
u32 reg;
u32 unmask_offset;
+ u32 val;
if (d->chip->runtime_pm) {
ret = pm_runtime_get_sync(map->dev);
@@ -85,6 +88,20 @@ static void regmap_irq_sync_unlock(struct irq_data *data)
ret);
}
+ if (d->clear_status) {
+ for (i = 0; i < d->chip->num_regs; i++) {
+ reg = d->chip->status_base +
+ (i * map->reg_stride * d->irq_reg_stride);
+
+ ret = regmap_read(map, reg, &val);
+ if (ret)
+ dev_err(d->map->dev,
+ "Failed to clear the interrupt status bits\n");
+ }
+
+ d->clear_status = false;
+ }
+
/*
* If there's been a change in the mask write it back to the
* hardware. We rely on the use of the regmap core cache to
@@ -157,20 +174,23 @@ static void regmap_irq_sync_unlock(struct irq_data *data)
}
}
- for (i = 0; i < d->chip->num_type_reg; i++) {
- if (!d->type_buf_def[i])
- continue;
- reg = d->chip->type_base +
- (i * map->reg_stride * d->type_reg_stride);
- if (d->chip->type_invert)
- ret = regmap_irq_update_bits(d, reg,
- d->type_buf_def[i], ~d->type_buf[i]);
- else
- ret = regmap_irq_update_bits(d, reg,
- d->type_buf_def[i], d->type_buf[i]);
- if (ret != 0)
- dev_err(d->map->dev, "Failed to sync type in %x\n",
- reg);
+ /* Don't update the type bits if we're using mask bits for irq type. */
+ if (!d->chip->type_in_mask) {
+ for (i = 0; i < d->chip->num_type_reg; i++) {
+ if (!d->type_buf_def[i])
+ continue;
+ reg = d->chip->type_base +
+ (i * map->reg_stride * d->type_reg_stride);
+ if (d->chip->type_invert)
+ ret = regmap_irq_update_bits(d, reg,
+ d->type_buf_def[i], ~d->type_buf[i]);
+ else
+ ret = regmap_irq_update_bits(d, reg,
+ d->type_buf_def[i], d->type_buf[i]);
+ if (ret != 0)
+ dev_err(d->map->dev, "Failed to sync type in %x\n",
+ reg);
+ }
}
if (d->chip->runtime_pm)
@@ -194,8 +214,30 @@ static void regmap_irq_enable(struct irq_data *data)
struct regmap_irq_chip_data *d = irq_data_get_irq_chip_data(data);
struct regmap *map = d->map;
const struct regmap_irq *irq_data = irq_to_regmap_irq(d, data->hwirq);
+ unsigned int mask, type;
+
+ type = irq_data->type.type_falling_val | irq_data->type.type_rising_val;
- d->mask_buf[irq_data->reg_offset / map->reg_stride] &= ~irq_data->mask;
+ /*
+ * The type_in_mask flag means that the underlying hardware uses
+ * separate mask bits for rising and falling edge interrupts, but
+ * we want to make them into a single virtual interrupt with
+ * configurable edge.
+ *
+ * If the interrupt we're enabling defines the falling or rising
+ * masks then instead of using the regular mask bits for this
+ * interrupt, use the value previously written to the type buffer
+ * at the corresponding offset in regmap_irq_set_type().
+ */
+ if (d->chip->type_in_mask && type)
+ mask = d->type_buf[irq_data->reg_offset / map->reg_stride];
+ else
+ mask = irq_data->mask;
+
+ if (d->chip->clear_on_unmask)
+ d->clear_status = true;
+
+ d->mask_buf[irq_data->reg_offset / map->reg_stride] &= ~mask;
}
static void regmap_irq_disable(struct irq_data *data)
@@ -212,27 +254,42 @@ static int regmap_irq_set_type(struct irq_data *data, unsigned int type)
struct regmap_irq_chip_data *d = irq_data_get_irq_chip_data(data);
struct regmap *map = d->map;
const struct regmap_irq *irq_data = irq_to_regmap_irq(d, data->hwirq);
- int reg = irq_data->type_reg_offset / map->reg_stride;
+ int reg;
+ const struct regmap_irq_type *t = &irq_data->type;
- if (!(irq_data->type_rising_mask | irq_data->type_falling_mask))
- return 0;
+ if ((t->types_supported & type) != type)
+ return -ENOTSUPP;
- d->type_buf[reg] &= ~(irq_data->type_falling_mask |
- irq_data->type_rising_mask);
+ reg = t->type_reg_offset / map->reg_stride;
+
+ if (t->type_reg_mask)
+ d->type_buf[reg] &= ~t->type_reg_mask;
+ else
+ d->type_buf[reg] &= ~(t->type_falling_val |
+ t->type_rising_val |
+ t->type_level_low_val |
+ t->type_level_high_val);
switch (type) {
case IRQ_TYPE_EDGE_FALLING:
- d->type_buf[reg] |= irq_data->type_falling_mask;
+ d->type_buf[reg] |= t->type_falling_val;
break;
case IRQ_TYPE_EDGE_RISING:
- d->type_buf[reg] |= irq_data->type_rising_mask;
+ d->type_buf[reg] |= t->type_rising_val;
break;
case IRQ_TYPE_EDGE_BOTH:
- d->type_buf[reg] |= (irq_data->type_falling_mask |
- irq_data->type_rising_mask);
+ d->type_buf[reg] |= (t->type_falling_val |
+ t->type_rising_val);
break;
+ case IRQ_TYPE_LEVEL_HIGH:
+ d->type_buf[reg] |= t->type_level_high_val;
+ break;
+
+ case IRQ_TYPE_LEVEL_LOW:
+ d->type_buf[reg] |= t->type_level_low_val;
+ break;
default:
return -EINVAL;
}
@@ -430,12 +487,16 @@ int regmap_add_irq_chip(struct regmap *map, int irq, int irq_flags,
struct regmap_irq_chip_data *d;
int i;
int ret = -ENOMEM;
+ int num_type_reg;
u32 reg;
u32 unmask_offset;
if (chip->num_regs <= 0)
return -EINVAL;
+ if (chip->clear_on_unmask && (chip->ack_base || chip->use_ack))
+ return -EINVAL;
+
for (i = 0; i < chip->num_irqs; i++) {
if (chip->irqs[i].reg_offset % map->reg_stride)
return -EINVAL;
@@ -479,13 +540,14 @@ int regmap_add_irq_chip(struct regmap *map, int irq, int irq_flags,
goto err_alloc;
}
- if (chip->num_type_reg) {
- d->type_buf_def = kcalloc(chip->num_type_reg,
- sizeof(unsigned int), GFP_KERNEL);
+ num_type_reg = chip->type_in_mask ? chip->num_regs : chip->num_type_reg;
+ if (num_type_reg) {
+ d->type_buf_def = kcalloc(num_type_reg,
+ sizeof(unsigned int), GFP_KERNEL);
if (!d->type_buf_def)
goto err_alloc;
- d->type_buf = kcalloc(chip->num_type_reg, sizeof(unsigned int),
+ d->type_buf = kcalloc(num_type_reg, sizeof(unsigned int),
GFP_KERNEL);
if (!d->type_buf)
goto err_alloc;
@@ -600,27 +662,21 @@ int regmap_add_irq_chip(struct regmap *map, int irq, int irq_flags,
}
}
- if (chip->num_type_reg) {
- for (i = 0; i < chip->num_irqs; i++) {
- reg = chip->irqs[i].type_reg_offset / map->reg_stride;
- d->type_buf_def[reg] |= chip->irqs[i].type_rising_mask |
- chip->irqs[i].type_falling_mask;
- }
+ if (chip->num_type_reg && !chip->type_in_mask) {
for (i = 0; i < chip->num_type_reg; ++i) {
if (!d->type_buf_def[i])
continue;
reg = chip->type_base +
(i * map->reg_stride * d->type_reg_stride);
- if (chip->type_invert)
- ret = regmap_irq_update_bits(d, reg,
- d->type_buf_def[i], 0xFF);
- else
- ret = regmap_irq_update_bits(d, reg,
- d->type_buf_def[i], 0x0);
- if (ret != 0) {
- dev_err(map->dev,
- "Failed to set type in 0x%x: %x\n",
+
+ ret = regmap_read(map, reg, &d->type_buf_def[i]);
+
+ if (d->chip->type_invert)
+ d->type_buf_def[i] = ~d->type_buf_def[i];
+
+ if (ret) {
+ dev_err(map->dev, "Failed to get type defaults at 0x%x: %d\n",
reg, ret);
goto err_alloc;
}
diff --git a/drivers/base/swnode.c b/drivers/base/swnode.c
new file mode 100644
index 000000000000..89ad8dee6ad5
--- /dev/null
+++ b/drivers/base/swnode.c
@@ -0,0 +1,676 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Software nodes for the firmware node framework.
+ *
+ * Copyright (C) 2018, Intel Corporation
+ * Author: Heikki Krogerus <heikki.krogerus@linux.intel.com>
+ */
+
+#include <linux/device.h>
+#include <linux/kernel.h>
+#include <linux/property.h>
+#include <linux/slab.h>
+
+struct software_node {
+ int id;
+ struct kobject kobj;
+ struct fwnode_handle fwnode;
+
+ /* hierarchy */
+ struct ida child_ids;
+ struct list_head entry;
+ struct list_head children;
+ struct software_node *parent;
+
+ /* properties */
+ const struct property_entry *properties;
+};
+
+static DEFINE_IDA(swnode_root_ids);
+static struct kset *swnode_kset;
+
+#define kobj_to_swnode(_kobj_) container_of(_kobj_, struct software_node, kobj)
+
+static const struct fwnode_operations software_node_ops;
+
+bool is_software_node(const struct fwnode_handle *fwnode)
+{
+ return !IS_ERR_OR_NULL(fwnode) && fwnode->ops == &software_node_ops;
+}
+
+#define to_software_node(__fwnode) \
+ ({ \
+ typeof(__fwnode) __to_software_node_fwnode = __fwnode; \
+ \
+ is_software_node(__to_software_node_fwnode) ? \
+ container_of(__to_software_node_fwnode, \
+ struct software_node, fwnode) : \
+ NULL; \
+ })
+
+/* -------------------------------------------------------------------------- */
+/* property_entry processing */
+
+static const struct property_entry *
+property_entry_get(const struct property_entry *prop, const char *name)
+{
+ if (!prop)
+ return NULL;
+
+ for (; prop->name; prop++)
+ if (!strcmp(name, prop->name))
+ return prop;
+
+ return NULL;
+}
+
+static void
+property_set_pointer(struct property_entry *prop, const void *pointer)
+{
+ switch (prop->type) {
+ case DEV_PROP_U8:
+ if (prop->is_array)
+ prop->pointer.u8_data = pointer;
+ else
+ prop->value.u8_data = *((u8 *)pointer);
+ break;
+ case DEV_PROP_U16:
+ if (prop->is_array)
+ prop->pointer.u16_data = pointer;
+ else
+ prop->value.u16_data = *((u16 *)pointer);
+ break;
+ case DEV_PROP_U32:
+ if (prop->is_array)
+ prop->pointer.u32_data = pointer;
+ else
+ prop->value.u32_data = *((u32 *)pointer);
+ break;
+ case DEV_PROP_U64:
+ if (prop->is_array)
+ prop->pointer.u64_data = pointer;
+ else
+ prop->value.u64_data = *((u64 *)pointer);
+ break;
+ case DEV_PROP_STRING:
+ if (prop->is_array)
+ prop->pointer.str = pointer;
+ else
+ prop->value.str = pointer;
+ break;
+ default:
+ break;
+ }
+}
+
+static const void *property_get_pointer(const struct property_entry *prop)
+{
+ switch (prop->type) {
+ case DEV_PROP_U8:
+ if (prop->is_array)
+ return prop->pointer.u8_data;
+ return &prop->value.u8_data;
+ case DEV_PROP_U16:
+ if (prop->is_array)
+ return prop->pointer.u16_data;
+ return &prop->value.u16_data;
+ case DEV_PROP_U32:
+ if (prop->is_array)
+ return prop->pointer.u32_data;
+ return &prop->value.u32_data;
+ case DEV_PROP_U64:
+ if (prop->is_array)
+ return prop->pointer.u64_data;
+ return &prop->value.u64_data;
+ case DEV_PROP_STRING:
+ if (prop->is_array)
+ return prop->pointer.str;
+ return &prop->value.str;
+ default:
+ return NULL;
+ }
+}
+
+static const void *property_entry_find(const struct property_entry *props,
+ const char *propname, size_t length)
+{
+ const struct property_entry *prop;
+ const void *pointer;
+
+ prop = property_entry_get(props, propname);
+ if (!prop)
+ return ERR_PTR(-EINVAL);
+ pointer = property_get_pointer(prop);
+ if (!pointer)
+ return ERR_PTR(-ENODATA);
+ if (length > prop->length)
+ return ERR_PTR(-EOVERFLOW);
+ return pointer;
+}
+
+static int property_entry_read_u8_array(const struct property_entry *props,
+ const char *propname,
+ u8 *values, size_t nval)
+{
+ const void *pointer;
+ size_t length = nval * sizeof(*values);
+
+ pointer = property_entry_find(props, propname, length);
+ if (IS_ERR(pointer))
+ return PTR_ERR(pointer);
+
+ memcpy(values, pointer, length);
+ return 0;
+}
+
+static int property_entry_read_u16_array(const struct property_entry *props,
+ const char *propname,
+ u16 *values, size_t nval)
+{
+ const void *pointer;
+ size_t length = nval * sizeof(*values);
+
+ pointer = property_entry_find(props, propname, length);
+ if (IS_ERR(pointer))
+ return PTR_ERR(pointer);
+
+ memcpy(values, pointer, length);
+ return 0;
+}
+
+static int property_entry_read_u32_array(const struct property_entry *props,
+ const char *propname,
+ u32 *values, size_t nval)
+{
+ const void *pointer;
+ size_t length = nval * sizeof(*values);
+
+ pointer = property_entry_find(props, propname, length);
+ if (IS_ERR(pointer))
+ return PTR_ERR(pointer);
+
+ memcpy(values, pointer, length);
+ return 0;
+}
+
+static int property_entry_read_u64_array(const struct property_entry *props,
+ const char *propname,
+ u64 *values, size_t nval)
+{
+ const void *pointer;
+ size_t length = nval * sizeof(*values);
+
+ pointer = property_entry_find(props, propname, length);
+ if (IS_ERR(pointer))
+ return PTR_ERR(pointer);
+
+ memcpy(values, pointer, length);
+ return 0;
+}
+
+static int
+property_entry_count_elems_of_size(const struct property_entry *props,
+ const char *propname, size_t length)
+{
+ const struct property_entry *prop;
+
+ prop = property_entry_get(props, propname);
+ if (!prop)
+ return -EINVAL;
+
+ return prop->length / length;
+}
+
+static int property_entry_read_int_array(const struct property_entry *props,
+ const char *name,
+ unsigned int elem_size, void *val,
+ size_t nval)
+{
+ if (!val)
+ return property_entry_count_elems_of_size(props, name,
+ elem_size);
+ switch (elem_size) {
+ case sizeof(u8):
+ return property_entry_read_u8_array(props, name, val, nval);
+ case sizeof(u16):
+ return property_entry_read_u16_array(props, name, val, nval);
+ case sizeof(u32):
+ return property_entry_read_u32_array(props, name, val, nval);
+ case sizeof(u64):
+ return property_entry_read_u64_array(props, name, val, nval);
+ }
+
+ return -ENXIO;
+}
+
+static int property_entry_read_string_array(const struct property_entry *props,
+ const char *propname,
+ const char **strings, size_t nval)
+{
+ const struct property_entry *prop;
+ const void *pointer;
+ size_t array_len, length;
+
+ /* Find out the array length. */
+ prop = property_entry_get(props, propname);
+ if (!prop)
+ return -EINVAL;
+
+ if (prop->is_array)
+ /* Find the length of an array. */
+ array_len = property_entry_count_elems_of_size(props, propname,
+ sizeof(const char *));
+ else
+ /* The array length for a non-array string property is 1. */
+ array_len = 1;
+
+ /* Return how many there are if strings is NULL. */
+ if (!strings)
+ return array_len;
+
+ array_len = min(nval, array_len);
+ length = array_len * sizeof(*strings);
+
+ pointer = property_entry_find(props, propname, length);
+ if (IS_ERR(pointer))
+ return PTR_ERR(pointer);
+
+ memcpy(strings, pointer, length);
+
+ return array_len;
+}
+
+static void property_entry_free_data(const struct property_entry *p)
+{
+ const void *pointer = property_get_pointer(p);
+ size_t i, nval;
+
+ if (p->is_array) {
+ if (p->type == DEV_PROP_STRING && p->pointer.str) {
+ nval = p->length / sizeof(const char *);
+ for (i = 0; i < nval; i++)
+ kfree(p->pointer.str[i]);
+ }
+ kfree(pointer);
+ } else if (p->type == DEV_PROP_STRING) {
+ kfree(p->value.str);
+ }
+ kfree(p->name);
+}
+
+static int property_copy_string_array(struct property_entry *dst,
+ const struct property_entry *src)
+{
+ const char **d;
+ size_t nval = src->length / sizeof(*d);
+ int i;
+
+ d = kcalloc(nval, sizeof(*d), GFP_KERNEL);
+ if (!d)
+ return -ENOMEM;
+
+ for (i = 0; i < nval; i++) {
+ d[i] = kstrdup(src->pointer.str[i], GFP_KERNEL);
+ if (!d[i] && src->pointer.str[i]) {
+ while (--i >= 0)
+ kfree(d[i]);
+ kfree(d);
+ return -ENOMEM;
+ }
+ }
+
+ dst->pointer.str = d;
+ return 0;
+}
+
+static int property_entry_copy_data(struct property_entry *dst,
+ const struct property_entry *src)
+{
+ const void *pointer = property_get_pointer(src);
+ const void *new;
+ int error;
+
+ if (src->is_array) {
+ if (!src->length)
+ return -ENODATA;
+
+ if (src->type == DEV_PROP_STRING) {
+ error = property_copy_string_array(dst, src);
+ if (error)
+ return error;
+ new = dst->pointer.str;
+ } else {
+ new = kmemdup(pointer, src->length, GFP_KERNEL);
+ if (!new)
+ return -ENOMEM;
+ }
+ } else if (src->type == DEV_PROP_STRING) {
+ new = kstrdup(src->value.str, GFP_KERNEL);
+ if (!new && src->value.str)
+ return -ENOMEM;
+ } else {
+ new = pointer;
+ }
+
+ dst->length = src->length;
+ dst->is_array = src->is_array;
+ dst->type = src->type;
+
+ property_set_pointer(dst, new);
+
+ dst->name = kstrdup(src->name, GFP_KERNEL);
+ if (!dst->name)
+ goto out_free_data;
+
+ return 0;
+
+out_free_data:
+ property_entry_free_data(dst);
+ return -ENOMEM;
+}
+
+/**
+ * property_entries_dup - duplicate array of properties
+ * @properties: array of properties to copy
+ *
+ * This function creates a deep copy of the given NULL-terminated array
+ * of property entries.
+ */
+struct property_entry *
+property_entries_dup(const struct property_entry *properties)
+{
+ struct property_entry *p;
+ int i, n = 0;
+ int ret;
+
+ while (properties[n].name)
+ n++;
+
+ p = kcalloc(n + 1, sizeof(*p), GFP_KERNEL);
+ if (!p)
+ return ERR_PTR(-ENOMEM);
+
+ for (i = 0; i < n; i++) {
+ ret = property_entry_copy_data(&p[i], &properties[i]);
+ if (ret) {
+ while (--i >= 0)
+ property_entry_free_data(&p[i]);
+ kfree(p);
+ return ERR_PTR(ret);
+ }
+ }
+
+ return p;
+}
+EXPORT_SYMBOL_GPL(property_entries_dup);
+
+/**
+ * property_entries_free - free previously allocated array of properties
+ * @properties: array of properties to destroy
+ *
+ * This function frees given NULL-terminated array of property entries,
+ * along with their data.
+ */
+void property_entries_free(const struct property_entry *properties)
+{
+ const struct property_entry *p;
+
+ if (!properties)
+ return;
+
+ for (p = properties; p->name; p++)
+ property_entry_free_data(p);
+
+ kfree(properties);
+}
+EXPORT_SYMBOL_GPL(property_entries_free);
+
+/* -------------------------------------------------------------------------- */
+/* fwnode operations */
+
+static struct fwnode_handle *software_node_get(struct fwnode_handle *fwnode)
+{
+ struct software_node *swnode = to_software_node(fwnode);
+
+ kobject_get(&swnode->kobj);
+
+ return &swnode->fwnode;
+}
+
+static void software_node_put(struct fwnode_handle *fwnode)
+{
+ struct software_node *swnode = to_software_node(fwnode);
+
+ kobject_put(&swnode->kobj);
+}
+
+static bool software_node_property_present(const struct fwnode_handle *fwnode,
+ const char *propname)
+{
+ return !!property_entry_get(to_software_node(fwnode)->properties,
+ propname);
+}
+
+static int software_node_read_int_array(const struct fwnode_handle *fwnode,
+ const char *propname,
+ unsigned int elem_size, void *val,
+ size_t nval)
+{
+ struct software_node *swnode = to_software_node(fwnode);
+
+ return property_entry_read_int_array(swnode->properties, propname,
+ elem_size, val, nval);
+}
+
+static int software_node_read_string_array(const struct fwnode_handle *fwnode,
+ const char *propname,
+ const char **val, size_t nval)
+{
+ struct software_node *swnode = to_software_node(fwnode);
+
+ return property_entry_read_string_array(swnode->properties, propname,
+ val, nval);
+}
+
+struct fwnode_handle *
+software_node_get_parent(const struct fwnode_handle *fwnode)
+{
+ struct software_node *swnode = to_software_node(fwnode);
+
+ return swnode ? (swnode->parent ? &swnode->parent->fwnode : NULL) :
+ NULL;
+}
+
+struct fwnode_handle *
+software_node_get_next_child(const struct fwnode_handle *fwnode,
+ struct fwnode_handle *child)
+{
+ struct software_node *p = to_software_node(fwnode);
+ struct software_node *c = to_software_node(child);
+
+ if (!p || list_empty(&p->children) ||
+ (c && list_is_last(&c->entry, &p->children)))
+ return NULL;
+
+ if (c)
+ c = list_next_entry(c, entry);
+ else
+ c = list_first_entry(&p->children, struct software_node, entry);
+ return &c->fwnode;
+}
+
+
+static const struct fwnode_operations software_node_ops = {
+ .get = software_node_get,
+ .put = software_node_put,
+ .property_present = software_node_property_present,
+ .property_read_int_array = software_node_read_int_array,
+ .property_read_string_array = software_node_read_string_array,
+ .get_parent = software_node_get_parent,
+ .get_next_child_node = software_node_get_next_child,
+};
+
+/* -------------------------------------------------------------------------- */
+
+static int
+software_node_register_properties(struct software_node *swnode,
+ const struct property_entry *properties)
+{
+ struct property_entry *props;
+
+ props = property_entries_dup(properties);
+ if (IS_ERR(props))
+ return PTR_ERR(props);
+
+ swnode->properties = props;
+
+ return 0;
+}
+
+static void software_node_release(struct kobject *kobj)
+{
+ struct software_node *swnode = kobj_to_swnode(kobj);
+
+ if (swnode->parent) {
+ ida_simple_remove(&swnode->parent->child_ids, swnode->id);
+ list_del(&swnode->entry);
+ } else {
+ ida_simple_remove(&swnode_root_ids, swnode->id);
+ }
+
+ ida_destroy(&swnode->child_ids);
+ property_entries_free(swnode->properties);
+ kfree(swnode);
+}
+
+static struct kobj_type software_node_type = {
+ .release = software_node_release,
+ .sysfs_ops = &kobj_sysfs_ops,
+};
+
+struct fwnode_handle *
+fwnode_create_software_node(const struct property_entry *properties,
+ const struct fwnode_handle *parent)
+{
+ struct software_node *p = NULL;
+ struct software_node *swnode;
+ int ret;
+
+ if (parent) {
+ if (IS_ERR(parent))
+ return ERR_CAST(parent);
+ if (!is_software_node(parent))
+ return ERR_PTR(-EINVAL);
+ p = to_software_node(parent);
+ }
+
+ swnode = kzalloc(sizeof(*swnode), GFP_KERNEL);
+ if (!swnode)
+ return ERR_PTR(-ENOMEM);
+
+ ret = ida_simple_get(p ? &p->child_ids : &swnode_root_ids, 0, 0,
+ GFP_KERNEL);
+ if (ret < 0) {
+ kfree(swnode);
+ return ERR_PTR(ret);
+ }
+
+ swnode->id = ret;
+ swnode->kobj.kset = swnode_kset;
+ swnode->fwnode.ops = &software_node_ops;
+
+ ida_init(&swnode->child_ids);
+ INIT_LIST_HEAD(&swnode->entry);
+ INIT_LIST_HEAD(&swnode->children);
+ swnode->parent = p;
+
+ if (p)
+ list_add_tail(&swnode->entry, &p->children);
+
+ ret = kobject_init_and_add(&swnode->kobj, &software_node_type,
+ p ? &p->kobj : NULL, "node%d", swnode->id);
+ if (ret) {
+ kobject_put(&swnode->kobj);
+ return ERR_PTR(ret);
+ }
+
+ ret = software_node_register_properties(swnode, properties);
+ if (ret) {
+ kobject_put(&swnode->kobj);
+ return ERR_PTR(ret);
+ }
+
+ kobject_uevent(&swnode->kobj, KOBJ_ADD);
+ return &swnode->fwnode;
+}
+EXPORT_SYMBOL_GPL(fwnode_create_software_node);
+
+void fwnode_remove_software_node(struct fwnode_handle *fwnode)
+{
+ struct software_node *swnode = to_software_node(fwnode);
+
+ if (!swnode)
+ return;
+
+ kobject_put(&swnode->kobj);
+}
+EXPORT_SYMBOL_GPL(fwnode_remove_software_node);
+
+int software_node_notify(struct device *dev, unsigned long action)
+{
+ struct fwnode_handle *fwnode = dev_fwnode(dev);
+ struct software_node *swnode;
+ int ret;
+
+ if (!fwnode)
+ return 0;
+
+ if (!is_software_node(fwnode))
+ fwnode = fwnode->secondary;
+ if (!is_software_node(fwnode))
+ return 0;
+
+ swnode = to_software_node(fwnode);
+
+ switch (action) {
+ case KOBJ_ADD:
+ ret = sysfs_create_link(&dev->kobj, &swnode->kobj,
+ "software_node");
+ if (ret)
+ break;
+
+ ret = sysfs_create_link(&swnode->kobj, &dev->kobj,
+ dev_name(dev));
+ if (ret) {
+ sysfs_remove_link(&dev->kobj, "software_node");
+ break;
+ }
+ kobject_get(&swnode->kobj);
+ break;
+ case KOBJ_REMOVE:
+ sysfs_remove_link(&swnode->kobj, dev_name(dev));
+ sysfs_remove_link(&dev->kobj, "software_node");
+ kobject_put(&swnode->kobj);
+ break;
+ default:
+ break;
+ }
+
+ return 0;
+}
+
+static int __init software_node_init(void)
+{
+ swnode_kset = kset_create_and_add("software_nodes", NULL, kernel_kobj);
+ if (!swnode_kset)
+ return -ENOMEM;
+ return 0;
+}
+postcore_initcall(software_node_init);
+
+static void __exit software_node_exit(void)
+{
+ ida_destroy(&swnode_root_ids);
+ kset_unregister(swnode_kset);
+}
+__exitcall(software_node_exit);
generated by cgit v1.2.3 (git 2.39.0) at 2024-11-28 02:18:27 +0300