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-rw-r--r--drivers/base/core.c13
-rw-r--r--drivers/base/module.c4
-rw-r--r--drivers/base/power/common.c45
-rw-r--r--drivers/base/regmap/regcache-flat.c2
-rw-r--r--drivers/base/regmap/regcache-maple.c2
-rw-r--r--drivers/base/regmap/regcache-rbtree.c2
-rw-r--r--drivers/base/regmap/regcache.c4
-rw-r--r--drivers/base/regmap/regmap-irq.c37
-rw-r--r--drivers/base/regmap/regmap-kunit.c19
-rw-r--r--drivers/base/regmap/regmap.c1
10 files changed, 107 insertions, 22 deletions
diff --git a/drivers/base/core.c b/drivers/base/core.c
index 730cae66607c..8c0733d3aad8 100644
--- a/drivers/base/core.c
+++ b/drivers/base/core.c
@@ -25,6 +25,7 @@
#include <linux/mutex.h>
#include <linux/pm_runtime.h>
#include <linux/netdevice.h>
+#include <linux/rcupdate.h>
#include <linux/sched/signal.h>
#include <linux/sched/mm.h>
#include <linux/string_helpers.h>
@@ -2640,6 +2641,7 @@ static const char *dev_uevent_name(const struct kobject *kobj)
static int dev_uevent(const struct kobject *kobj, struct kobj_uevent_env *env)
{
const struct device *dev = kobj_to_dev(kobj);
+ struct device_driver *driver;
int retval = 0;
/* add device node properties if present */
@@ -2668,8 +2670,12 @@ static int dev_uevent(const struct kobject *kobj, struct kobj_uevent_env *env)
if (dev->type && dev->type->name)
add_uevent_var(env, "DEVTYPE=%s", dev->type->name);
- if (dev->driver)
- add_uevent_var(env, "DRIVER=%s", dev->driver->name);
+ /* Synchronize with module_remove_driver() */
+ rcu_read_lock();
+ driver = READ_ONCE(dev->driver);
+ if (driver)
+ add_uevent_var(env, "DRIVER=%s", driver->name);
+ rcu_read_unlock();
/* Add common DT information about the device */
of_device_uevent(dev, env);
@@ -2739,11 +2745,8 @@ static ssize_t uevent_show(struct device *dev, struct device_attribute *attr,
if (!env)
return -ENOMEM;
- /* Synchronize with really_probe() */
- device_lock(dev);
/* let the kset specific function add its keys */
retval = kset->uevent_ops->uevent(&dev->kobj, env);
- device_unlock(dev);
if (retval)
goto out;
diff --git a/drivers/base/module.c b/drivers/base/module.c
index 7af224e6914a..f742ad2a21da 100644
--- a/drivers/base/module.c
+++ b/drivers/base/module.c
@@ -7,6 +7,7 @@
#include <linux/errno.h>
#include <linux/slab.h>
#include <linux/string.h>
+#include <linux/rcupdate.h>
#include "base.h"
static char *make_driver_name(const struct device_driver *drv)
@@ -97,6 +98,9 @@ void module_remove_driver(const struct device_driver *drv)
if (!drv)
return;
+ /* Synchronize with dev_uevent() */
+ synchronize_rcu();
+
sysfs_remove_link(&drv->p->kobj, "module");
if (drv->owner)
diff --git a/drivers/base/power/common.c b/drivers/base/power/common.c
index 327d168dd37a..8c34ae1cd8d5 100644
--- a/drivers/base/power/common.c
+++ b/drivers/base/power/common.c
@@ -277,6 +277,51 @@ err_attach:
EXPORT_SYMBOL_GPL(dev_pm_domain_attach_list);
/**
+ * devm_pm_domain_detach_list - devres-enabled version of dev_pm_domain_detach_list.
+ * @_list: The list of PM domains to detach.
+ *
+ * This function reverse the actions from devm_pm_domain_attach_list().
+ * it will be invoked during the remove phase from drivers implicitly if driver
+ * uses devm_pm_domain_attach_list() to attach the PM domains.
+ */
+static void devm_pm_domain_detach_list(void *_list)
+{
+ struct dev_pm_domain_list *list = _list;
+
+ dev_pm_domain_detach_list(list);
+}
+
+/**
+ * devm_pm_domain_attach_list - devres-enabled version of dev_pm_domain_attach_list
+ * @dev: The device used to lookup the PM domains for.
+ * @data: The data used for attaching to the PM domains.
+ * @list: An out-parameter with an allocated list of attached PM domains.
+ *
+ * NOTE: this will also handle calling devm_pm_domain_detach_list() for
+ * you during remove phase.
+ *
+ * Returns the number of attached PM domains or a negative error code in case of
+ * a failure.
+ */
+int devm_pm_domain_attach_list(struct device *dev,
+ const struct dev_pm_domain_attach_data *data,
+ struct dev_pm_domain_list **list)
+{
+ int ret, num_pds;
+
+ num_pds = dev_pm_domain_attach_list(dev, data, list);
+ if (num_pds <= 0)
+ return num_pds;
+
+ ret = devm_add_action_or_reset(dev, devm_pm_domain_detach_list, *list);
+ if (ret)
+ return ret;
+
+ return num_pds;
+}
+EXPORT_SYMBOL_GPL(devm_pm_domain_attach_list);
+
+/**
* dev_pm_domain_detach - Detach a device from its PM domain.
* @dev: Device to detach.
* @power_off: Used to indicate whether we should power off the device.
diff --git a/drivers/base/regmap/regcache-flat.c b/drivers/base/regmap/regcache-flat.c
index 9b17c77dec9d..f36d3618b67c 100644
--- a/drivers/base/regmap/regcache-flat.c
+++ b/drivers/base/regmap/regcache-flat.c
@@ -27,7 +27,7 @@ static int regcache_flat_init(struct regmap *map)
return -EINVAL;
map->cache = kcalloc(regcache_flat_get_index(map, map->max_register)
- + 1, sizeof(unsigned int), GFP_KERNEL);
+ + 1, sizeof(unsigned int), map->alloc_flags);
if (!map->cache)
return -ENOMEM;
diff --git a/drivers/base/regmap/regcache-maple.c b/drivers/base/regmap/regcache-maple.c
index 2dea9d259c49..8d27d3653ea3 100644
--- a/drivers/base/regmap/regcache-maple.c
+++ b/drivers/base/regmap/regcache-maple.c
@@ -348,7 +348,7 @@ static int regcache_maple_init(struct regmap *map)
int ret;
int range_start;
- mt = kmalloc(sizeof(*mt), GFP_KERNEL);
+ mt = kmalloc(sizeof(*mt), map->alloc_flags);
if (!mt)
return -ENOMEM;
map->cache = mt;
diff --git a/drivers/base/regmap/regcache-rbtree.c b/drivers/base/regmap/regcache-rbtree.c
index 3db88bbcae0f..188438186589 100644
--- a/drivers/base/regmap/regcache-rbtree.c
+++ b/drivers/base/regmap/regcache-rbtree.c
@@ -187,7 +187,7 @@ static int regcache_rbtree_init(struct regmap *map)
int i;
int ret;
- map->cache = kmalloc(sizeof *rbtree_ctx, GFP_KERNEL);
+ map->cache = kmalloc(sizeof *rbtree_ctx, map->alloc_flags);
if (!map->cache)
return -ENOMEM;
diff --git a/drivers/base/regmap/regcache.c b/drivers/base/regmap/regcache.c
index 7ec1ec605335..d3659ba3cc11 100644
--- a/drivers/base/regmap/regcache.c
+++ b/drivers/base/regmap/regcache.c
@@ -195,7 +195,9 @@ int regcache_init(struct regmap *map, const struct regmap_config *config)
if (map->cache_ops->init) {
dev_dbg(map->dev, "Initializing %s cache\n",
map->cache_ops->name);
+ map->lock(map->lock_arg);
ret = map->cache_ops->init(map);
+ map->unlock(map->lock_arg);
if (ret)
goto err_free;
}
@@ -223,7 +225,9 @@ void regcache_exit(struct regmap *map)
if (map->cache_ops->exit) {
dev_dbg(map->dev, "Destroying %s cache\n",
map->cache_ops->name);
+ map->lock(map->lock_arg);
map->cache_ops->exit(map);
+ map->unlock(map->lock_arg);
}
}
diff --git a/drivers/base/regmap/regmap-irq.c b/drivers/base/regmap/regmap-irq.c
index d3ec1345b5b5..a750e48a26b8 100644
--- a/drivers/base/regmap/regmap-irq.c
+++ b/drivers/base/regmap/regmap-irq.c
@@ -608,6 +608,30 @@ int regmap_irq_set_type_config_simple(unsigned int **buf, unsigned int type,
}
EXPORT_SYMBOL_GPL(regmap_irq_set_type_config_simple);
+static int regmap_irq_create_domain(struct fwnode_handle *fwnode, int irq_base,
+ const struct regmap_irq_chip *chip,
+ struct regmap_irq_chip_data *d)
+{
+ struct irq_domain_info info = {
+ .fwnode = fwnode,
+ .size = chip->num_irqs,
+ .hwirq_max = chip->num_irqs,
+ .virq_base = irq_base,
+ .ops = &regmap_domain_ops,
+ .host_data = d,
+ .name_suffix = chip->domain_suffix,
+ };
+
+ d->domain = irq_domain_instantiate(&info);
+ if (IS_ERR(d->domain)) {
+ dev_err(d->map->dev, "Failed to create IRQ domain\n");
+ return PTR_ERR(d->domain);
+ }
+
+ return 0;
+}
+
+
/**
* regmap_add_irq_chip_fwnode() - Use standard regmap IRQ controller handling
*
@@ -856,18 +880,9 @@ int regmap_add_irq_chip_fwnode(struct fwnode_handle *fwnode,
}
}
- if (irq_base)
- d->domain = irq_domain_create_legacy(fwnode, chip->num_irqs,
- irq_base, 0,
- &regmap_domain_ops, d);
- else
- d->domain = irq_domain_create_linear(fwnode, chip->num_irqs,
- &regmap_domain_ops, d);
- if (!d->domain) {
- dev_err(map->dev, "Failed to create IRQ domain\n");
- ret = -ENOMEM;
+ ret = regmap_irq_create_domain(fwnode, irq_base, chip, d);
+ if (ret)
goto err_alloc;
- }
ret = request_threaded_irq(irq, NULL, regmap_irq_thread,
irq_flags | IRQF_ONESHOT,
diff --git a/drivers/base/regmap/regmap-kunit.c b/drivers/base/regmap/regmap-kunit.c
index d790c7df5cac..4bf3f1e59ed7 100644
--- a/drivers/base/regmap/regmap-kunit.c
+++ b/drivers/base/regmap/regmap-kunit.c
@@ -22,6 +22,7 @@ struct regmap_test_param {
enum regmap_endian val_endian;
unsigned int from_reg;
+ bool fast_io;
};
static void get_changed_bytes(void *orig, void *new, size_t size)
@@ -80,41 +81,52 @@ static const char *regmap_endian_name(enum regmap_endian endian)
static void param_to_desc(const struct regmap_test_param *param, char *desc)
{
- snprintf(desc, KUNIT_PARAM_DESC_SIZE, "%s-%s @%#x",
+ snprintf(desc, KUNIT_PARAM_DESC_SIZE, "%s-%s%s @%#x",
regcache_type_name(param->cache),
regmap_endian_name(param->val_endian),
+ param->fast_io ? " fast I/O" : "",
param->from_reg);
}
static const struct regmap_test_param regcache_types_list[] = {
{ .cache = REGCACHE_NONE },
+ { .cache = REGCACHE_NONE, .fast_io = true },
{ .cache = REGCACHE_FLAT },
+ { .cache = REGCACHE_FLAT, .fast_io = true },
{ .cache = REGCACHE_RBTREE },
+ { .cache = REGCACHE_RBTREE, .fast_io = true },
{ .cache = REGCACHE_MAPLE },
+ { .cache = REGCACHE_MAPLE, .fast_io = true },
};
KUNIT_ARRAY_PARAM(regcache_types, regcache_types_list, param_to_desc);
static const struct regmap_test_param real_cache_types_only_list[] = {
{ .cache = REGCACHE_FLAT },
+ { .cache = REGCACHE_FLAT, .fast_io = true },
{ .cache = REGCACHE_RBTREE },
+ { .cache = REGCACHE_RBTREE, .fast_io = true },
{ .cache = REGCACHE_MAPLE },
+ { .cache = REGCACHE_MAPLE, .fast_io = true },
};
KUNIT_ARRAY_PARAM(real_cache_types_only, real_cache_types_only_list, param_to_desc);
static const struct regmap_test_param real_cache_types_list[] = {
{ .cache = REGCACHE_FLAT, .from_reg = 0 },
+ { .cache = REGCACHE_FLAT, .from_reg = 0, .fast_io = true },
{ .cache = REGCACHE_FLAT, .from_reg = 0x2001 },
{ .cache = REGCACHE_FLAT, .from_reg = 0x2002 },
{ .cache = REGCACHE_FLAT, .from_reg = 0x2003 },
{ .cache = REGCACHE_FLAT, .from_reg = 0x2004 },
{ .cache = REGCACHE_RBTREE, .from_reg = 0 },
+ { .cache = REGCACHE_RBTREE, .from_reg = 0, .fast_io = true },
{ .cache = REGCACHE_RBTREE, .from_reg = 0x2001 },
{ .cache = REGCACHE_RBTREE, .from_reg = 0x2002 },
{ .cache = REGCACHE_RBTREE, .from_reg = 0x2003 },
{ .cache = REGCACHE_RBTREE, .from_reg = 0x2004 },
{ .cache = REGCACHE_MAPLE, .from_reg = 0 },
+ { .cache = REGCACHE_RBTREE, .from_reg = 0, .fast_io = true },
{ .cache = REGCACHE_MAPLE, .from_reg = 0x2001 },
{ .cache = REGCACHE_MAPLE, .from_reg = 0x2002 },
{ .cache = REGCACHE_MAPLE, .from_reg = 0x2003 },
@@ -125,11 +137,13 @@ KUNIT_ARRAY_PARAM(real_cache_types, real_cache_types_list, param_to_desc);
static const struct regmap_test_param sparse_cache_types_list[] = {
{ .cache = REGCACHE_RBTREE, .from_reg = 0 },
+ { .cache = REGCACHE_RBTREE, .from_reg = 0, .fast_io = true },
{ .cache = REGCACHE_RBTREE, .from_reg = 0x2001 },
{ .cache = REGCACHE_RBTREE, .from_reg = 0x2002 },
{ .cache = REGCACHE_RBTREE, .from_reg = 0x2003 },
{ .cache = REGCACHE_RBTREE, .from_reg = 0x2004 },
{ .cache = REGCACHE_MAPLE, .from_reg = 0 },
+ { .cache = REGCACHE_MAPLE, .from_reg = 0, .fast_io = true },
{ .cache = REGCACHE_MAPLE, .from_reg = 0x2001 },
{ .cache = REGCACHE_MAPLE, .from_reg = 0x2002 },
{ .cache = REGCACHE_MAPLE, .from_reg = 0x2003 },
@@ -151,8 +165,7 @@ static struct regmap *gen_regmap(struct kunit *test,
struct reg_default *defaults;
config->cache_type = param->cache;
- config->disable_locking = config->cache_type == REGCACHE_RBTREE ||
- config->cache_type == REGCACHE_MAPLE;
+ config->fast_io = param->fast_io;
if (config->max_register == 0) {
config->max_register = param->from_reg;
diff --git a/drivers/base/regmap/regmap.c b/drivers/base/regmap/regmap.c
index bfc6bc1eb3a4..9ed842d17642 100644
--- a/drivers/base/regmap/regmap.c
+++ b/drivers/base/regmap/regmap.c
@@ -1445,6 +1445,7 @@ void regmap_exit(struct regmap *map)
struct regmap_async *async;
regcache_exit(map);
+
regmap_debugfs_exit(map);
regmap_range_exit(map);
if (map->bus && map->bus->free_context)
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