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-rw-r--r--drivers/base/Kconfig1
-rw-r--r--drivers/base/Makefile1
-rw-r--r--drivers/base/base.h1
-rw-r--r--drivers/base/cpu.c3
-rw-r--r--drivers/base/devtmpfs.c1
-rw-r--r--drivers/base/dma-coherent.c1
-rw-r--r--drivers/base/memory.c1
-rw-r--r--drivers/base/node.c1
-rw-r--r--drivers/base/power/Makefile1
-rw-r--r--drivers/base/power/domain_governor.c53
-rw-r--r--drivers/base/power/power.h1
-rw-r--r--drivers/base/power/qos.c2
-rw-r--r--drivers/base/power/runtime.c2
-rw-r--r--drivers/base/power/sysfs.c25
-rw-r--r--drivers/base/regmap/Kconfig1
-rw-r--r--drivers/base/regmap/Makefile1
-rw-r--r--drivers/base/regmap/trace.h1
-rw-r--r--drivers/base/test/Kconfig1
18 files changed, 43 insertions, 55 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/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 227bac5f1191..321cd7b4d817 100644
--- a/drivers/base/cpu.c
+++ b/drivers/base/cpu.c
@@ -377,8 +377,7 @@ 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,
- PM_QOS_RESUME_LATENCY_NO_CONSTRAINT);
+ dev_pm_qos_expose_latency_limit(&cpu->dev, 0);
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 aae2402f3791..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
*/
diff --git a/drivers/base/power/Makefile b/drivers/base/power/Makefile
index 5998c53280f5..29cd71d8b360 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_governor.c b/drivers/base/power/domain_governor.c
index 51751cc8c9e6..281f949c5ffe 100644
--- a/drivers/base/power/domain_governor.c
+++ b/drivers/base/power/domain_governor.c
@@ -14,20 +14,23 @@
static int dev_update_qos_constraint(struct device *dev, void *data)
{
s64 *constraint_ns_p = data;
- s64 constraint_ns = -1;
+ s32 constraint_ns = -1;
if (dev->power.subsys_data && dev->power.subsys_data->domain_data)
constraint_ns = dev_gpd_data(dev)->td.effective_constraint_ns;
- if (constraint_ns < 0)
+ if (constraint_ns < 0) {
constraint_ns = dev_pm_qos_read_value(dev);
-
- if (constraint_ns == PM_QOS_RESUME_LATENCY_NO_CONSTRAINT)
+ constraint_ns *= NSEC_PER_USEC;
+ }
+ if (constraint_ns == 0)
return 0;
- constraint_ns *= NSEC_PER_USEC;
-
- if (constraint_ns < *constraint_ns_p || *constraint_ns_p < 0)
+ /*
+ * constraint_ns cannot be negative here, because the device has been
+ * suspended.
+ */
+ if (constraint_ns < *constraint_ns_p || *constraint_ns_p == 0)
*constraint_ns_p = constraint_ns;
return 0;
@@ -60,14 +63,10 @@ static bool default_suspend_ok(struct device *dev)
spin_unlock_irqrestore(&dev->power.lock, flags);
- if (constraint_ns == 0)
+ if (constraint_ns < 0)
return false;
- if (constraint_ns == PM_QOS_RESUME_LATENCY_NO_CONSTRAINT)
- constraint_ns = -1;
- else
- constraint_ns *= NSEC_PER_USEC;
-
+ constraint_ns *= NSEC_PER_USEC;
/*
* We can walk the children without any additional locking, because
* they all have been suspended at this point and their
@@ -77,19 +76,14 @@ static bool default_suspend_ok(struct device *dev)
device_for_each_child(dev, &constraint_ns,
dev_update_qos_constraint);
- if (constraint_ns < 0) {
- /* The children have no constraints. */
- td->effective_constraint_ns = PM_QOS_RESUME_LATENCY_NO_CONSTRAINT;
- td->cached_suspend_ok = true;
- } else {
- constraint_ns -= td->suspend_latency_ns + td->resume_latency_ns;
- if (constraint_ns > 0) {
- td->effective_constraint_ns = constraint_ns;
- td->cached_suspend_ok = true;
- } else {
- td->effective_constraint_ns = 0;
- }
+ if (constraint_ns > 0) {
+ constraint_ns -= td->suspend_latency_ns +
+ td->resume_latency_ns;
+ if (constraint_ns == 0)
+ return false;
}
+ 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
@@ -151,14 +145,13 @@ 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)
+ if (constraint_ns < 0) {
constraint_ns = dev_pm_qos_read_value(pdd->dev);
-
- if (constraint_ns == PM_QOS_RESUME_LATENCY_NO_CONSTRAINT)
+ constraint_ns *= NSEC_PER_USEC;
+ }
+ if (constraint_ns == 0)
continue;
- constraint_ns *= NSEC_PER_USEC;
-
/*
* constraint_ns cannot be negative here, because the device has
* been suspended.
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 7d29286d9313..277d43a83f53 100644
--- a/drivers/base/power/qos.c
+++ b/drivers/base/power/qos.c
@@ -189,7 +189,7 @@ 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_NO_CONSTRAINT;
+ c->no_constraint_value = PM_QOS_RESUME_LATENCY_DEFAULT_VALUE;
c->type = PM_QOS_MIN;
c->notifiers = n;
diff --git a/drivers/base/power/runtime.c b/drivers/base/power/runtime.c
index 13e015905543..7bcf80fa9ada 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 632077f05c57..156ab57bca77 100644
--- a/drivers/base/power/sysfs.c
+++ b/drivers/base/power/sysfs.c
@@ -218,14 +218,7 @@ static ssize_t pm_qos_resume_latency_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
- 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);
+ return sprintf(buf, "%d\n", dev_pm_qos_requested_resume_latency(dev));
}
static ssize_t pm_qos_resume_latency_store(struct device *dev,
@@ -235,21 +228,11 @@ static ssize_t pm_qos_resume_latency_store(struct device *dev,
s32 value;
int ret;
- 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 (kstrtos32(buf, 0, &value))
+ return -EINVAL;
- if (value == 0)
- value = PM_QOS_RESUME_LATENCY_NO_CONSTRAINT;
- } else if (!strcmp(buf, "n/a") || !strcmp(buf, "n/a\n")) {
- value = 0;
- } else {
+ if (value < 0)
return -EINVAL;
- }
ret = dev_pm_qos_update_request(dev->power.qos->resume_latency_req,
value);
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
generated by cgit (git 2.34.1) at 2024-06-12 06:15:19 +0000