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path: root/drivers/base/power/main.c
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Diffstat (limited to 'drivers/base/power/main.c')
-rw-r--r--drivers/base/power/main.c128
1 files changed, 35 insertions, 93 deletions
diff --git a/drivers/base/power/main.c b/drivers/base/power/main.c
index 406f82c344fa..b570189d4f2d 100644
--- a/drivers/base/power/main.c
+++ b/drivers/base/power/main.c
@@ -164,8 +164,9 @@ static ktime_t initcall_debug_start(struct device *dev)
ktime_t calltime = ktime_set(0, 0);
if (initcall_debug) {
- pr_info("calling %s+ @ %i\n",
- dev_name(dev), task_pid_nr(current));
+ pr_info("calling %s+ @ %i, parent: %s\n",
+ dev_name(dev), task_pid_nr(current),
+ dev->parent ? dev_name(dev->parent) : "none");
calltime = ktime_get();
}
@@ -210,6 +211,24 @@ static void dpm_wait_for_children(struct device *dev, bool async)
device_for_each_child(dev, &async, dpm_wait_fn);
}
+static int dpm_run_callback(struct device *dev, int (*cb)(struct device *))
+{
+ ktime_t calltime;
+ int error;
+
+ if (!cb)
+ return 0;
+
+ calltime = initcall_debug_start(dev);
+
+ error = cb(dev);
+ suspend_report_result(cb, error);
+
+ initcall_debug_report(dev, calltime, error);
+
+ return error;
+}
+
/**
* pm_op - Execute the PM operation appropriate for given PM event.
* @dev: Device to handle.
@@ -221,59 +240,36 @@ static int pm_op(struct device *dev,
pm_message_t state)
{
int error = 0;
- ktime_t calltime;
-
- calltime = initcall_debug_start(dev);
switch (state.event) {
#ifdef CONFIG_SUSPEND
case PM_EVENT_SUSPEND:
- if (ops->suspend) {
- error = ops->suspend(dev);
- suspend_report_result(ops->suspend, error);
- }
+ error = dpm_run_callback(dev, ops->suspend);
break;
case PM_EVENT_RESUME:
- if (ops->resume) {
- error = ops->resume(dev);
- suspend_report_result(ops->resume, error);
- }
+ error = dpm_run_callback(dev, ops->resume);
break;
#endif /* CONFIG_SUSPEND */
#ifdef CONFIG_HIBERNATE_CALLBACKS
case PM_EVENT_FREEZE:
case PM_EVENT_QUIESCE:
- if (ops->freeze) {
- error = ops->freeze(dev);
- suspend_report_result(ops->freeze, error);
- }
+ error = dpm_run_callback(dev, ops->freeze);
break;
case PM_EVENT_HIBERNATE:
- if (ops->poweroff) {
- error = ops->poweroff(dev);
- suspend_report_result(ops->poweroff, error);
- }
+ error = dpm_run_callback(dev, ops->poweroff);
break;
case PM_EVENT_THAW:
case PM_EVENT_RECOVER:
- if (ops->thaw) {
- error = ops->thaw(dev);
- suspend_report_result(ops->thaw, error);
- }
+ error = dpm_run_callback(dev, ops->thaw);
break;
case PM_EVENT_RESTORE:
- if (ops->restore) {
- error = ops->restore(dev);
- suspend_report_result(ops->restore, error);
- }
+ error = dpm_run_callback(dev, ops->restore);
break;
#endif /* CONFIG_HIBERNATE_CALLBACKS */
default:
error = -EINVAL;
}
- initcall_debug_report(dev, calltime, error);
-
return error;
}
@@ -291,70 +287,36 @@ static int pm_noirq_op(struct device *dev,
pm_message_t state)
{
int error = 0;
- ktime_t calltime = ktime_set(0, 0), delta, rettime;
-
- if (initcall_debug) {
- pr_info("calling %s+ @ %i, parent: %s\n",
- dev_name(dev), task_pid_nr(current),
- dev->parent ? dev_name(dev->parent) : "none");
- calltime = ktime_get();
- }
switch (state.event) {
#ifdef CONFIG_SUSPEND
case PM_EVENT_SUSPEND:
- if (ops->suspend_noirq) {
- error = ops->suspend_noirq(dev);
- suspend_report_result(ops->suspend_noirq, error);
- }
+ error = dpm_run_callback(dev, ops->suspend_noirq);
break;
case PM_EVENT_RESUME:
- if (ops->resume_noirq) {
- error = ops->resume_noirq(dev);
- suspend_report_result(ops->resume_noirq, error);
- }
+ error = dpm_run_callback(dev, ops->resume_noirq);
break;
#endif /* CONFIG_SUSPEND */
#ifdef CONFIG_HIBERNATE_CALLBACKS
case PM_EVENT_FREEZE:
case PM_EVENT_QUIESCE:
- if (ops->freeze_noirq) {
- error = ops->freeze_noirq(dev);
- suspend_report_result(ops->freeze_noirq, error);
- }
+ error = dpm_run_callback(dev, ops->freeze_noirq);
break;
case PM_EVENT_HIBERNATE:
- if (ops->poweroff_noirq) {
- error = ops->poweroff_noirq(dev);
- suspend_report_result(ops->poweroff_noirq, error);
- }
+ error = dpm_run_callback(dev, ops->poweroff_noirq);
break;
case PM_EVENT_THAW:
case PM_EVENT_RECOVER:
- if (ops->thaw_noirq) {
- error = ops->thaw_noirq(dev);
- suspend_report_result(ops->thaw_noirq, error);
- }
+ error = dpm_run_callback(dev, ops->thaw_noirq);
break;
case PM_EVENT_RESTORE:
- if (ops->restore_noirq) {
- error = ops->restore_noirq(dev);
- suspend_report_result(ops->restore_noirq, error);
- }
+ error = dpm_run_callback(dev, ops->restore_noirq);
break;
#endif /* CONFIG_HIBERNATE_CALLBACKS */
default:
error = -EINVAL;
}
- if (initcall_debug) {
- rettime = ktime_get();
- delta = ktime_sub(rettime, calltime);
- printk("initcall %s_i+ returned %d after %Ld usecs\n",
- dev_name(dev), error,
- (unsigned long long)ktime_to_ns(delta) >> 10);
- }
-
return error;
}
@@ -486,26 +448,6 @@ void dpm_resume_noirq(pm_message_t state)
EXPORT_SYMBOL_GPL(dpm_resume_noirq);
/**
- * legacy_resume - Execute a legacy (bus or class) resume callback for device.
- * @dev: Device to resume.
- * @cb: Resume callback to execute.
- */
-static int legacy_resume(struct device *dev, int (*cb)(struct device *dev))
-{
- int error;
- ktime_t calltime;
-
- calltime = initcall_debug_start(dev);
-
- error = cb(dev);
- suspend_report_result(cb, error);
-
- initcall_debug_report(dev, calltime, error);
-
- return error;
-}
-
-/**
* device_resume - Execute "resume" callbacks for given device.
* @dev: Device to handle.
* @state: PM transition of the system being carried out.
@@ -553,7 +495,7 @@ static int device_resume(struct device *dev, pm_message_t state, bool async)
goto End;
} else if (dev->class->resume) {
pm_dev_dbg(dev, state, "legacy class ");
- error = legacy_resume(dev, dev->class->resume);
+ error = dpm_run_callback(dev, dev->class->resume);
goto End;
}
}
@@ -564,7 +506,7 @@ static int device_resume(struct device *dev, pm_message_t state, bool async)
error = pm_op(dev, dev->bus->pm, state);
} else if (dev->bus->resume) {
pm_dev_dbg(dev, state, "legacy ");
- error = legacy_resume(dev, dev->bus->resume);
+ error = dpm_run_callback(dev, dev->bus->resume);
}
}
generated by cgit v1.2.3 (git 2.39.0) at 2025-02-11 16:49:47 +0300