diff options
Diffstat (limited to 'drivers/base')
-rw-r--r-- | drivers/base/Kconfig | 1 | ||||
-rw-r--r-- | drivers/base/Makefile | 1 | ||||
-rw-r--r-- | drivers/base/arch_topology.c | 29 | ||||
-rw-r--r-- | drivers/base/base.h | 1 | ||||
-rw-r--r-- | drivers/base/cpu.c | 3 | ||||
-rw-r--r-- | drivers/base/devtmpfs.c | 1 | ||||
-rw-r--r-- | drivers/base/dma-coherent.c | 1 | ||||
-rw-r--r-- | drivers/base/memory.c | 1 | ||||
-rw-r--r-- | drivers/base/node.c | 13 | ||||
-rw-r--r-- | drivers/base/power/Makefile | 1 | ||||
-rw-r--r-- | drivers/base/power/domain.c | 24 | ||||
-rw-r--r-- | drivers/base/power/domain_governor.c | 73 | ||||
-rw-r--r-- | drivers/base/power/power.h | 1 | ||||
-rw-r--r-- | drivers/base/power/qos.c | 5 | ||||
-rw-r--r-- | drivers/base/power/runtime.c | 2 | ||||
-rw-r--r-- | drivers/base/power/sysfs.c | 53 | ||||
-rw-r--r-- | drivers/base/property.c | 19 | ||||
-rw-r--r-- | drivers/base/regmap/Kconfig | 1 | ||||
-rw-r--r-- | drivers/base/regmap/Makefile | 1 | ||||
-rw-r--r-- | drivers/base/regmap/trace.h | 1 | ||||
-rw-r--r-- | drivers/base/test/Kconfig | 1 |
21 files changed, 142 insertions, 91 deletions
diff --git a/drivers/base/Kconfig b/drivers/base/Kconfig index 1a5f6a157a57..2f6614c9a229 100644 --- a/drivers/base/Kconfig +++ b/drivers/base/Kconfig @@ -1,3 +1,4 @@ +# SPDX-License-Identifier: GPL-2.0 menu "Generic Driver Options" config UEVENT_HELPER diff --git a/drivers/base/Makefile b/drivers/base/Makefile index 397e5c344e6a..e32a52490051 100644 --- a/drivers/base/Makefile +++ b/drivers/base/Makefile @@ -1,3 +1,4 @@ +# SPDX-License-Identifier: GPL-2.0 # Makefile for the Linux device tree obj-y := component.o core.o bus.o dd.o syscore.o \ diff --git a/drivers/base/arch_topology.c b/drivers/base/arch_topology.c index 6df7d6676a48..0739c5b953bf 100644 --- a/drivers/base/arch_topology.c +++ b/drivers/base/arch_topology.c @@ -22,14 +22,23 @@ #include <linux/string.h> #include <linux/sched/topology.h> -static DEFINE_MUTEX(cpu_scale_mutex); -static DEFINE_PER_CPU(unsigned long, cpu_scale) = SCHED_CAPACITY_SCALE; +DEFINE_PER_CPU(unsigned long, freq_scale) = SCHED_CAPACITY_SCALE; -unsigned long topology_get_cpu_scale(struct sched_domain *sd, int cpu) +void arch_set_freq_scale(struct cpumask *cpus, unsigned long cur_freq, + unsigned long max_freq) { - return per_cpu(cpu_scale, cpu); + unsigned long scale; + int i; + + scale = (cur_freq << SCHED_CAPACITY_SHIFT) / max_freq; + + for_each_cpu(i, cpus) + per_cpu(freq_scale, i) = scale; } +static DEFINE_MUTEX(cpu_scale_mutex); +DEFINE_PER_CPU(unsigned long, cpu_scale) = SCHED_CAPACITY_SCALE; + void topology_set_cpu_scale(unsigned int cpu, unsigned long capacity) { per_cpu(cpu_scale, cpu) = capacity; @@ -212,6 +221,8 @@ static struct notifier_block init_cpu_capacity_notifier __initdata = { static int __init register_cpufreq_notifier(void) { + int ret; + /* * on ACPI-based systems we need to use the default cpu capacity * until we have the necessary code to parse the cpu capacity, so @@ -227,8 +238,13 @@ static int __init register_cpufreq_notifier(void) cpumask_copy(cpus_to_visit, cpu_possible_mask); - return cpufreq_register_notifier(&init_cpu_capacity_notifier, - CPUFREQ_POLICY_NOTIFIER); + ret = cpufreq_register_notifier(&init_cpu_capacity_notifier, + CPUFREQ_POLICY_NOTIFIER); + + if (ret) + free_cpumask_var(cpus_to_visit); + + return ret; } core_initcall(register_cpufreq_notifier); @@ -236,6 +252,7 @@ static void __init parsing_done_workfn(struct work_struct *work) { cpufreq_unregister_notifier(&init_cpu_capacity_notifier, CPUFREQ_POLICY_NOTIFIER); + free_cpumask_var(cpus_to_visit); } #else diff --git a/drivers/base/base.h b/drivers/base/base.h index 539432a14b5c..d800de650fa5 100644 --- a/drivers/base/base.h +++ b/drivers/base/base.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0 */ #include <linux/notifier.h> /** diff --git a/drivers/base/cpu.c b/drivers/base/cpu.c index 321cd7b4d817..227bac5f1191 100644 --- a/drivers/base/cpu.c +++ b/drivers/base/cpu.c @@ -377,7 +377,8 @@ int register_cpu(struct cpu *cpu, int num) per_cpu(cpu_sys_devices, num) = &cpu->dev; register_cpu_under_node(num, cpu_to_node(num)); - dev_pm_qos_expose_latency_limit(&cpu->dev, 0); + dev_pm_qos_expose_latency_limit(&cpu->dev, + PM_QOS_RESUME_LATENCY_NO_CONSTRAINT); return 0; } diff --git a/drivers/base/devtmpfs.c b/drivers/base/devtmpfs.c index d2fb9c8ed205..50025d7959cb 100644 --- a/drivers/base/devtmpfs.c +++ b/drivers/base/devtmpfs.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* * devtmpfs - kernel-maintained tmpfs-based /dev * diff --git a/drivers/base/dma-coherent.c b/drivers/base/dma-coherent.c index 744f64f43454..1e6396bb807b 100644 --- a/drivers/base/dma-coherent.c +++ b/drivers/base/dma-coherent.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* * Coherent per-device memory handling. * Borrowed from i386 diff --git a/drivers/base/memory.c b/drivers/base/memory.c index 4e3b61cda520..1d60b58a8c19 100644 --- a/drivers/base/memory.c +++ b/drivers/base/memory.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* * Memory subsystem support * diff --git a/drivers/base/node.c b/drivers/base/node.c index 3855902f2c5b..ee090ab9171c 100644 --- a/drivers/base/node.c +++ b/drivers/base/node.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* * Basic Node interface support */ @@ -27,13 +28,21 @@ static struct bus_type node_subsys = { static ssize_t node_read_cpumap(struct device *dev, bool list, char *buf) { + ssize_t n; + cpumask_var_t mask; struct node *node_dev = to_node(dev); - const struct cpumask *mask = cpumask_of_node(node_dev->dev.id); /* 2008/04/07: buf currently PAGE_SIZE, need 9 chars per 32 bits. */ BUILD_BUG_ON((NR_CPUS/32 * 9) > (PAGE_SIZE-1)); - return cpumap_print_to_pagebuf(list, buf, mask); + if (!alloc_cpumask_var(&mask, GFP_KERNEL)) + return 0; + + cpumask_and(mask, cpumask_of_node(node_dev->dev.id), cpu_online_mask); + n = cpumap_print_to_pagebuf(list, buf, mask); + free_cpumask_var(mask); + + return n; } static inline ssize_t node_read_cpumask(struct device *dev, diff --git a/drivers/base/power/Makefile b/drivers/base/power/Makefile index 73a1cffc0a5f..e1bb691cf8f1 100644 --- a/drivers/base/power/Makefile +++ b/drivers/base/power/Makefile @@ -1,3 +1,4 @@ +# SPDX-License-Identifier: GPL-2.0 obj-$(CONFIG_PM) += sysfs.o generic_ops.o common.o qos.o runtime.o wakeirq.o obj-$(CONFIG_PM_SLEEP) += main.o wakeup.o obj-$(CONFIG_PM_TRACE_RTC) += trace.o diff --git a/drivers/base/power/domain.c b/drivers/base/power/domain.c index 7e01ae364d78..0c80bea05bcb 100644 --- a/drivers/base/power/domain.c +++ b/drivers/base/power/domain.c @@ -124,6 +124,7 @@ static const struct genpd_lock_ops genpd_spin_ops = { #define genpd_status_on(genpd) (genpd->status == GPD_STATE_ACTIVE) #define genpd_is_irq_safe(genpd) (genpd->flags & GENPD_FLAG_IRQ_SAFE) #define genpd_is_always_on(genpd) (genpd->flags & GENPD_FLAG_ALWAYS_ON) +#define genpd_is_active_wakeup(genpd) (genpd->flags & GENPD_FLAG_ACTIVE_WAKEUP) static inline bool irq_safe_dev_in_no_sleep_domain(struct device *dev, const struct generic_pm_domain *genpd) @@ -444,9 +445,7 @@ static int genpd_power_off(struct generic_pm_domain *genpd, bool one_dev_on, list_for_each_entry(pdd, &genpd->dev_list, list_node) { enum pm_qos_flags_status stat; - stat = dev_pm_qos_flags(pdd->dev, - PM_QOS_FLAG_NO_POWER_OFF - | PM_QOS_FLAG_REMOTE_WAKEUP); + stat = dev_pm_qos_flags(pdd->dev, PM_QOS_FLAG_NO_POWER_OFF); if (stat > PM_QOS_FLAGS_NONE) return -EBUSY; @@ -865,12 +864,6 @@ static bool genpd_present(const struct generic_pm_domain *genpd) #ifdef CONFIG_PM_SLEEP -static bool genpd_dev_active_wakeup(const struct generic_pm_domain *genpd, - struct device *dev) -{ - return GENPD_DEV_CALLBACK(genpd, bool, active_wakeup, dev); -} - /** * genpd_sync_power_off - Synchronously power off a PM domain and its masters. * @genpd: PM domain to power off, if possible. @@ -975,7 +968,7 @@ static bool resume_needed(struct device *dev, if (!device_can_wakeup(dev)) return false; - active_wakeup = genpd_dev_active_wakeup(genpd, dev); + active_wakeup = genpd_is_active_wakeup(genpd); return device_may_wakeup(dev) ? active_wakeup : !active_wakeup; } @@ -1015,7 +1008,7 @@ static int genpd_prepare(struct device *dev) genpd_unlock(genpd); ret = pm_generic_prepare(dev); - if (ret) { + if (ret < 0) { genpd_lock(genpd); genpd->prepared_count--; @@ -1023,7 +1016,8 @@ static int genpd_prepare(struct device *dev) genpd_unlock(genpd); } - return ret; + /* Never return 1, as genpd don't cope with the direct_complete path. */ + return ret >= 0 ? 0 : ret; } /** @@ -1044,7 +1038,7 @@ static int genpd_finish_suspend(struct device *dev, bool poweroff) if (IS_ERR(genpd)) return -EINVAL; - if (dev->power.wakeup_path && genpd_dev_active_wakeup(genpd, dev)) + if (dev->power.wakeup_path && genpd_is_active_wakeup(genpd)) return 0; if (poweroff) @@ -1099,7 +1093,7 @@ static int genpd_resume_noirq(struct device *dev) if (IS_ERR(genpd)) return -EINVAL; - if (dev->power.wakeup_path && genpd_dev_active_wakeup(genpd, dev)) + if (dev->power.wakeup_path && genpd_is_active_wakeup(genpd)) return 0; genpd_lock(genpd); @@ -1333,7 +1327,7 @@ static struct generic_pm_domain_data *genpd_alloc_dev_data(struct device *dev, gpd_data->base.dev = dev; gpd_data->td.constraint_changed = true; - gpd_data->td.effective_constraint_ns = -1; + gpd_data->td.effective_constraint_ns = PM_QOS_RESUME_LATENCY_NO_CONSTRAINT_NS; gpd_data->nb.notifier_call = genpd_dev_pm_qos_notifier; spin_lock_irq(&dev->power.lock); diff --git a/drivers/base/power/domain_governor.c b/drivers/base/power/domain_governor.c index 281f949c5ffe..99896fbf18e4 100644 --- a/drivers/base/power/domain_governor.c +++ b/drivers/base/power/domain_governor.c @@ -14,23 +14,29 @@ static int dev_update_qos_constraint(struct device *dev, void *data) { s64 *constraint_ns_p = data; - s32 constraint_ns = -1; + s64 constraint_ns; - if (dev->power.subsys_data && dev->power.subsys_data->domain_data) + if (dev->power.subsys_data && dev->power.subsys_data->domain_data) { + /* + * Only take suspend-time QoS constraints of devices into + * account, because constraints updated after the device has + * been suspended are not guaranteed to be taken into account + * anyway. In order for them to take effect, the device has to + * be resumed and suspended again. + */ constraint_ns = dev_gpd_data(dev)->td.effective_constraint_ns; - - if (constraint_ns < 0) { + } else { + /* + * The child is not in a domain and there's no info on its + * suspend/resume latencies, so assume them to be negligible and + * take its current PM QoS constraint (that's the only thing + * known at this point anyway). + */ constraint_ns = dev_pm_qos_read_value(dev); constraint_ns *= NSEC_PER_USEC; } - if (constraint_ns == 0) - return 0; - /* - * constraint_ns cannot be negative here, because the device has been - * suspended. - */ - if (constraint_ns < *constraint_ns_p || *constraint_ns_p == 0) + if (constraint_ns < *constraint_ns_p) *constraint_ns_p = constraint_ns; return 0; @@ -58,12 +64,12 @@ static bool default_suspend_ok(struct device *dev) } td->constraint_changed = false; td->cached_suspend_ok = false; - td->effective_constraint_ns = -1; + td->effective_constraint_ns = 0; constraint_ns = __dev_pm_qos_read_value(dev); spin_unlock_irqrestore(&dev->power.lock, flags); - if (constraint_ns < 0) + if (constraint_ns == 0) return false; constraint_ns *= NSEC_PER_USEC; @@ -76,14 +82,32 @@ static bool default_suspend_ok(struct device *dev) device_for_each_child(dev, &constraint_ns, dev_update_qos_constraint); - if (constraint_ns > 0) { + if (constraint_ns == PM_QOS_RESUME_LATENCY_NO_CONSTRAINT_NS) { + /* "No restriction", so the device is allowed to suspend. */ + td->effective_constraint_ns = PM_QOS_RESUME_LATENCY_NO_CONSTRAINT_NS; + td->cached_suspend_ok = true; + } else if (constraint_ns == 0) { + /* + * This triggers if one of the children that don't belong to a + * domain has a zero PM QoS constraint and it's better not to + * suspend then. effective_constraint_ns is zero already and + * cached_suspend_ok is false, so bail out. + */ + return false; + } else { constraint_ns -= td->suspend_latency_ns + td->resume_latency_ns; - if (constraint_ns == 0) + /* + * effective_constraint_ns is zero already and cached_suspend_ok + * is false, so if the computed value is not positive, return + * right away. + */ + if (constraint_ns <= 0) return false; + + td->effective_constraint_ns = constraint_ns; + td->cached_suspend_ok = true; } - td->effective_constraint_ns = constraint_ns; - td->cached_suspend_ok = constraint_ns >= 0; /* * The children have been suspended already, so we don't need to take @@ -144,18 +168,13 @@ static bool __default_power_down_ok(struct dev_pm_domain *pd, */ td = &to_gpd_data(pdd)->td; constraint_ns = td->effective_constraint_ns; - /* default_suspend_ok() need not be called before us. */ - if (constraint_ns < 0) { - constraint_ns = dev_pm_qos_read_value(pdd->dev); - constraint_ns *= NSEC_PER_USEC; - } - if (constraint_ns == 0) - continue; - /* - * constraint_ns cannot be negative here, because the device has - * been suspended. + * Zero means "no suspend at all" and this runs only when all + * devices in the domain are suspended, so it must be positive. */ + if (constraint_ns == PM_QOS_RESUME_LATENCY_NO_CONSTRAINT_NS) + continue; + if (constraint_ns <= off_on_time_ns) return false; diff --git a/drivers/base/power/power.h b/drivers/base/power/power.h index a46e97e515c5..7beee75399d4 100644 --- a/drivers/base/power/power.h +++ b/drivers/base/power/power.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0 */ #include <linux/pm_qos.h> static inline void device_pm_init_common(struct device *dev) diff --git a/drivers/base/power/qos.c b/drivers/base/power/qos.c index 277d43a83f53..3382542b39b7 100644 --- a/drivers/base/power/qos.c +++ b/drivers/base/power/qos.c @@ -139,6 +139,9 @@ static int apply_constraint(struct dev_pm_qos_request *req, switch(req->type) { case DEV_PM_QOS_RESUME_LATENCY: + if (WARN_ON(action != PM_QOS_REMOVE_REQ && value < 0)) + value = 0; + ret = pm_qos_update_target(&qos->resume_latency, &req->data.pnode, action, value); break; @@ -189,7 +192,7 @@ static int dev_pm_qos_constraints_allocate(struct device *dev) plist_head_init(&c->list); c->target_value = PM_QOS_RESUME_LATENCY_DEFAULT_VALUE; c->default_value = PM_QOS_RESUME_LATENCY_DEFAULT_VALUE; - c->no_constraint_value = PM_QOS_RESUME_LATENCY_DEFAULT_VALUE; + c->no_constraint_value = PM_QOS_RESUME_LATENCY_NO_CONSTRAINT; c->type = PM_QOS_MIN; c->notifiers = n; diff --git a/drivers/base/power/runtime.c b/drivers/base/power/runtime.c index 7bcf80fa9ada..13e015905543 100644 --- a/drivers/base/power/runtime.c +++ b/drivers/base/power/runtime.c @@ -253,7 +253,7 @@ static int rpm_check_suspend_allowed(struct device *dev) || (dev->power.request_pending && dev->power.request == RPM_REQ_RESUME)) retval = -EAGAIN; - else if (__dev_pm_qos_read_value(dev) < 0) + else if (__dev_pm_qos_read_value(dev) == 0) retval = -EPERM; else if (dev->power.runtime_status == RPM_SUSPENDED) retval = 1; diff --git a/drivers/base/power/sysfs.c b/drivers/base/power/sysfs.c index 156ab57bca77..e153e28b1857 100644 --- a/drivers/base/power/sysfs.c +++ b/drivers/base/power/sysfs.c @@ -218,7 +218,14 @@ static ssize_t pm_qos_resume_latency_show(struct device *dev, struct device_attribute *attr, char *buf) { - return sprintf(buf, "%d\n", dev_pm_qos_requested_resume_latency(dev)); + s32 value = dev_pm_qos_requested_resume_latency(dev); + + if (value == 0) + return sprintf(buf, "n/a\n"); + else if (value == PM_QOS_RESUME_LATENCY_NO_CONSTRAINT) + value = 0; + + return sprintf(buf, "%d\n", value); } static ssize_t pm_qos_resume_latency_store(struct device *dev, @@ -228,11 +235,21 @@ static ssize_t pm_qos_resume_latency_store(struct device *dev, s32 value; int ret; - if (kstrtos32(buf, 0, &value)) - return -EINVAL; + if (!kstrtos32(buf, 0, &value)) { + /* + * Prevent users from writing negative or "no constraint" values + * directly. + */ + if (value < 0 || value == PM_QOS_RESUME_LATENCY_NO_CONSTRAINT) + return -EINVAL; - if (value < 0) + if (value == 0) + value = PM_QOS_RESUME_LATENCY_NO_CONSTRAINT; + } else if (!strcmp(buf, "n/a") || !strcmp(buf, "n/a\n")) { + value = 0; + } else { return -EINVAL; + } ret = dev_pm_qos_update_request(dev->power.qos->resume_latency_req, value); @@ -309,33 +326,6 @@ static ssize_t pm_qos_no_power_off_store(struct device *dev, static DEVICE_ATTR(pm_qos_no_power_off, 0644, pm_qos_no_power_off_show, pm_qos_no_power_off_store); -static ssize_t pm_qos_remote_wakeup_show(struct device *dev, - struct device_attribute *attr, - char *buf) -{ - return sprintf(buf, "%d\n", !!(dev_pm_qos_requested_flags(dev) - & PM_QOS_FLAG_REMOTE_WAKEUP)); -} - -static ssize_t pm_qos_remote_wakeup_store(struct device *dev, - struct device_attribute *attr, - const char *buf, size_t n) -{ - int ret; - - if (kstrtoint(buf, 0, &ret)) - return -EINVAL; - - if (ret != 0 && ret != 1) - return -EINVAL; - - ret = dev_pm_qos_update_flags(dev, PM_QOS_FLAG_REMOTE_WAKEUP, ret); - return ret < 0 ? ret : n; -} - -static DEVICE_ATTR(pm_qos_remote_wakeup, 0644, - pm_qos_remote_wakeup_show, pm_qos_remote_wakeup_store); - #ifdef CONFIG_PM_SLEEP static const char _enabled[] = "enabled"; static const char _disabled[] = "disabled"; @@ -671,7 +661,6 @@ static const struct attribute_group pm_qos_latency_tolerance_attr_group = { static struct attribute *pm_qos_flags_attrs[] = { &dev_attr_pm_qos_no_power_off.attr, - &dev_attr_pm_qos_remote_wakeup.attr, NULL, }; static const struct attribute_group pm_qos_flags_attr_group = { diff --git a/drivers/base/property.c b/drivers/base/property.c index d0b65bbe7e15..7ed99c1b2a8b 100644 --- a/drivers/base/property.c +++ b/drivers/base/property.c @@ -21,6 +21,7 @@ #include <linux/phy.h> struct property_set { + struct device *dev; struct fwnode_handle fwnode; const struct property_entry *properties; }; @@ -682,6 +683,10 @@ EXPORT_SYMBOL_GPL(fwnode_property_match_string); * Caller is responsible to call fwnode_handle_put() on the returned * args->fwnode pointer. * + * Returns: %0 on success + * %-ENOENT when the index is out of bounds, the index has an empty + * reference or the property was not found + * %-EINVAL on parse error */ int fwnode_property_get_reference_args(const struct fwnode_handle *fwnode, const char *prop, const char *nargs_prop, @@ -891,6 +896,7 @@ static struct property_set *pset_copy_set(const struct property_set *pset) void device_remove_properties(struct device *dev) { struct fwnode_handle *fwnode; + struct property_set *pset; fwnode = dev_fwnode(dev); if (!fwnode) @@ -900,16 +906,16 @@ void device_remove_properties(struct device *dev) * the pset. If there is no real firmware node (ACPI/DT) primary * will hold the pset. */ - if (is_pset_node(fwnode)) { + pset = to_pset_node(fwnode); + if (pset) { set_primary_fwnode(dev, NULL); - pset_free_set(to_pset_node(fwnode)); } else { - fwnode = fwnode->secondary; - if (!IS_ERR(fwnode) && is_pset_node(fwnode)) { + pset = to_pset_node(fwnode->secondary); + if (pset && dev == pset->dev) set_secondary_fwnode(dev, NULL); - pset_free_set(to_pset_node(fwnode)); - } } + if (pset && dev == pset->dev) + pset_free_set(pset); } EXPORT_SYMBOL_GPL(device_remove_properties); @@ -938,6 +944,7 @@ int device_add_properties(struct device *dev, p->fwnode.ops = &pset_fwnode_ops; set_secondary_fwnode(dev, &p->fwnode); + p->dev = dev; return 0; } EXPORT_SYMBOL_GPL(device_add_properties); diff --git a/drivers/base/regmap/Kconfig b/drivers/base/regmap/Kconfig index 073c0b77e5b3..0368fd7b3a41 100644 --- a/drivers/base/regmap/Kconfig +++ b/drivers/base/regmap/Kconfig @@ -1,3 +1,4 @@ +# SPDX-License-Identifier: GPL-2.0 # Generic register map support. There are no user servicable options here, # this is an API intended to be used by other kernel subsystems. These # subsystems should select the appropriate symbols. diff --git a/drivers/base/regmap/Makefile b/drivers/base/regmap/Makefile index 0cf4abc8fbf1..0d298c446108 100644 --- a/drivers/base/regmap/Makefile +++ b/drivers/base/regmap/Makefile @@ -1,3 +1,4 @@ +# SPDX-License-Identifier: GPL-2.0 # For include/trace/define_trace.h to include trace.h CFLAGS_regmap.o := -I$(src) diff --git a/drivers/base/regmap/trace.h b/drivers/base/regmap/trace.h index 64586a1c5a42..d4066fa079ab 100644 --- a/drivers/base/regmap/trace.h +++ b/drivers/base/regmap/trace.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0 */ #undef TRACE_SYSTEM #define TRACE_SYSTEM regmap diff --git a/drivers/base/test/Kconfig b/drivers/base/test/Kconfig index 9aa0d45a60db..86e85daa80bf 100644 --- a/drivers/base/test/Kconfig +++ b/drivers/base/test/Kconfig @@ -1,3 +1,4 @@ +# SPDX-License-Identifier: GPL-2.0 config TEST_ASYNC_DRIVER_PROBE tristate "Build kernel module to test asynchronous driver probing" depends on m |