PM / Sleep: Unify diagnostic messages from device suspend/resume
Make pm_op() and pm_noirq_op() use the same helper function for
running callbacks, which will cause them to use the same format of
diagnostic messages. This also reduces the complexity and size of
the code quite a bit.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/drivers/base/power/main.c b/drivers/base/power/main.c
index 406f82c..b570189 100644
--- a/drivers/base/power/main.c
+++ b/drivers/base/power/main.c
@@ -164,8 +164,9 @@
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 @@
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 @@
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 @@
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 @@
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 @@
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 @@
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);
}
}