Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspend-2.6

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspend-2.6: (21 commits)
  PM / Hibernate: Reduce autotuned default image size
  PM / Core: Introduce struct syscore_ops for core subsystems PM
  PM QoS: Make pm_qos settings readable
  PM / OPP: opp_find_freq_exact() documentation fix
  PM: Documentation/power/states.txt: fix repetition
  PM: Make system-wide PM and runtime PM treat subsystems consistently
  PM: Simplify kernel/power/Kconfig
  PM: Add support for device power domains
  PM: Drop pm_flags that is not necessary
  PM: Allow pm_runtime_suspend() to succeed during system suspend
  PM: Clean up PM_TRACE dependencies and drop unnecessary Kconfig option
  PM: Remove CONFIG_PM_OPS
  PM: Reorder power management Kconfig options
  PM: Make CONFIG_PM depend on (CONFIG_PM_SLEEP || CONFIG_PM_RUNTIME)
  PM / ACPI: Remove references to pm_flags from bus.c
  PM: Do not create wakeup sysfs files for devices that cannot wake up
  USB / Hub: Do not call device_set_wakeup_capable() under spinlock
  PM: Use appropriate printk() priority level in trace.c
  PM / Wakeup: Don't update events_check_enabled in pm_get_wakeup_count()
  PM / Wakeup: Make pm_save_wakeup_count() work as documented
  ...

1 files changed, 93 insertions, 82 deletions

diff --git a/drivers/base/power/main.c b/drivers/base/power/main.c
index 83404973f97a..052dc53eef38 100644
--- a/drivers/base/power/main.c
+++ b/drivers/base/power/main.c
@@ -423,26 +423,22 @@ static int device_resume_noirq(struct device *dev, pm_message_t state)
 	TRACE_DEVICE(dev);
 	TRACE_RESUME(0);
 
-	if (dev->bus && dev->bus->pm) {
-		pm_dev_dbg(dev, state, "EARLY ");
-		error = pm_noirq_op(dev, dev->bus->pm, state);
-		if (error)
-			goto End;
+	if (dev->pwr_domain) {
+		pm_dev_dbg(dev, state, "EARLY power domain ");
+		pm_noirq_op(dev, &dev->pwr_domain->ops, state);
 	}
 
 	if (dev->type && dev->type->pm) {
 		pm_dev_dbg(dev, state, "EARLY type ");
 		error = pm_noirq_op(dev, dev->type->pm, state);
-		if (error)
-			goto End;
-	}
-
-	if (dev->class && dev->class->pm) {
+	} else if (dev->class && dev->class->pm) {
 		pm_dev_dbg(dev, state, "EARLY class ");
 		error = pm_noirq_op(dev, dev->class->pm, state);
+	} else if (dev->bus && dev->bus->pm) {
+		pm_dev_dbg(dev, state, "EARLY ");
+		error = pm_noirq_op(dev, dev->bus->pm, state);
 	}
 
-End:
 	TRACE_RESUME(error);
 	return error;
 }
@@ -518,36 +514,39 @@ static int device_resume(struct device *dev, pm_message_t state, bool async)
 
 	dev->power.in_suspend = false;
 
-	if (dev->bus) {
-		if (dev->bus->pm) {
-			pm_dev_dbg(dev, state, "");
-			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);
-		}
-		if (error)
-			goto End;
+	if (dev->pwr_domain) {
+		pm_dev_dbg(dev, state, "power domain ");
+		pm_op(dev, &dev->pwr_domain->ops, state);
 	}
 
-	if (dev->type) {
-		if (dev->type->pm) {
-			pm_dev_dbg(dev, state, "type ");
-			error = pm_op(dev, dev->type->pm, state);
-		}
-		if (error)
-			goto End;
+	if (dev->type && dev->type->pm) {
+		pm_dev_dbg(dev, state, "type ");
+		error = pm_op(dev, dev->type->pm, state);
+		goto End;
 	}
 
 	if (dev->class) {
 		if (dev->class->pm) {
 			pm_dev_dbg(dev, state, "class ");
 			error = pm_op(dev, dev->class->pm, state);
+			goto End;
 		} else if (dev->class->resume) {
 			pm_dev_dbg(dev, state, "legacy class ");
 			error = legacy_resume(dev, dev->class->resume);
+			goto End;
 		}
 	}
+
+	if (dev->bus) {
+		if (dev->bus->pm) {
+			pm_dev_dbg(dev, state, "");
+			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);
+		}
+	}
+
  End:
 	device_unlock(dev);
 	complete_all(&dev->power.completion);
@@ -629,19 +628,23 @@ static void device_complete(struct device *dev, pm_message_t state)
 {
 	device_lock(dev);
 
-	if (dev->class && dev->class->pm && dev->class->pm->complete) {
-		pm_dev_dbg(dev, state, "completing class ");
-		dev->class->pm->complete(dev);
+	if (dev->pwr_domain && dev->pwr_domain->ops.complete) {
+		pm_dev_dbg(dev, state, "completing power domain ");
+		dev->pwr_domain->ops.complete(dev);
 	}
 
-	if (dev->type && dev->type->pm && dev->type->pm->complete) {
+	if (dev->type && dev->type->pm) {
 		pm_dev_dbg(dev, state, "completing type ");
-		dev->type->pm->complete(dev);
-	}
-
-	if (dev->bus && dev->bus->pm && dev->bus->pm->complete) {
+		if (dev->type->pm->complete)
+			dev->type->pm->complete(dev);
+	} else if (dev->class && dev->class->pm) {
+		pm_dev_dbg(dev, state, "completing class ");
+		if (dev->class->pm->complete)
+			dev->class->pm->complete(dev);
+	} else if (dev->bus && dev->bus->pm) {
 		pm_dev_dbg(dev, state, "completing ");
-		dev->bus->pm->complete(dev);
+		if (dev->bus->pm->complete)
+			dev->bus->pm->complete(dev);
 	}
 
 	device_unlock(dev);
@@ -669,7 +672,6 @@ static void dpm_complete(pm_message_t state)
 		mutex_unlock(&dpm_list_mtx);
 
 		device_complete(dev, state);
-		pm_runtime_put_sync(dev);
 
 		mutex_lock(&dpm_list_mtx);
 		put_device(dev);
@@ -727,29 +729,31 @@ static pm_message_t resume_event(pm_message_t sleep_state)
  */
 static int device_suspend_noirq(struct device *dev, pm_message_t state)
 {
-	int error = 0;
-
-	if (dev->class && dev->class->pm) {
-		pm_dev_dbg(dev, state, "LATE class ");
-		error = pm_noirq_op(dev, dev->class->pm, state);
-		if (error)
-			goto End;
-	}
+	int error;
 
 	if (dev->type && dev->type->pm) {
 		pm_dev_dbg(dev, state, "LATE type ");
 		error = pm_noirq_op(dev, dev->type->pm, state);
 		if (error)
-			goto End;
-	}
-
-	if (dev->bus && dev->bus->pm) {
+			return error;
+	} else if (dev->class && dev->class->pm) {
+		pm_dev_dbg(dev, state, "LATE class ");
+		error = pm_noirq_op(dev, dev->class->pm, state);
+		if (error)
+			return error;
+	} else if (dev->bus && dev->bus->pm) {
 		pm_dev_dbg(dev, state, "LATE ");
 		error = pm_noirq_op(dev, dev->bus->pm, state);
+		if (error)
+			return error;
 	}
 
-End:
-	return error;
+	if (dev->pwr_domain) {
+		pm_dev_dbg(dev, state, "LATE power domain ");
+		pm_noirq_op(dev, &dev->pwr_domain->ops, state);
+	}
+
+	return 0;
 }
 
 /**
@@ -836,25 +840,22 @@ static int __device_suspend(struct device *dev, pm_message_t state, bool async)
 		goto End;
 	}
 
+	if (dev->type && dev->type->pm) {
+		pm_dev_dbg(dev, state, "type ");
+		error = pm_op(dev, dev->type->pm, state);
+		goto Domain;
+	}
+
 	if (dev->class) {
 		if (dev->class->pm) {
 			pm_dev_dbg(dev, state, "class ");
 			error = pm_op(dev, dev->class->pm, state);
+			goto Domain;
 		} else if (dev->class->suspend) {
 			pm_dev_dbg(dev, state, "legacy class ");
 			error = legacy_suspend(dev, state, dev->class->suspend);
+			goto Domain;
 		}
-		if (error)
-			goto End;
-	}
-
-	if (dev->type) {
-		if (dev->type->pm) {
-			pm_dev_dbg(dev, state, "type ");
-			error = pm_op(dev, dev->type->pm, state);
-		}
-		if (error)
-			goto End;
 	}
 
 	if (dev->bus) {
@@ -867,6 +868,12 @@ static int __device_suspend(struct device *dev, pm_message_t state, bool async)
 		}
 	}
 
+ Domain:
+	if (!error && dev->pwr_domain) {
+		pm_dev_dbg(dev, state, "power domain ");
+		pm_op(dev, &dev->pwr_domain->ops, state);
+	}
+
  End:
 	device_unlock(dev);
 	complete_all(&dev->power.completion);
@@ -957,27 +964,34 @@ static int device_prepare(struct device *dev, pm_message_t state)
 
 	device_lock(dev);
 
-	if (dev->bus && dev->bus->pm && dev->bus->pm->prepare) {
+	if (dev->type && dev->type->pm) {
+		pm_dev_dbg(dev, state, "preparing type ");
+		if (dev->type->pm->prepare)
+			error = dev->type->pm->prepare(dev);
+		suspend_report_result(dev->type->pm->prepare, error);
+		if (error)
+			goto End;
+	} else if (dev->class && dev->class->pm) {
+		pm_dev_dbg(dev, state, "preparing class ");
+		if (dev->class->pm->prepare)
+			error = dev->class->pm->prepare(dev);
+		suspend_report_result(dev->class->pm->prepare, error);
+		if (error)
+			goto End;
+	} else if (dev->bus && dev->bus->pm) {
 		pm_dev_dbg(dev, state, "preparing ");
-		error = dev->bus->pm->prepare(dev);
+		if (dev->bus->pm->prepare)
+			error = dev->bus->pm->prepare(dev);
 		suspend_report_result(dev->bus->pm->prepare, error);
 		if (error)
 			goto End;
 	}
 
-	if (dev->type && dev->type->pm && dev->type->pm->prepare) {
-		pm_dev_dbg(dev, state, "preparing type ");
-		error = dev->type->pm->prepare(dev);
-		suspend_report_result(dev->type->pm->prepare, error);
-		if (error)
-			goto End;
+	if (dev->pwr_domain && dev->pwr_domain->ops.prepare) {
+		pm_dev_dbg(dev, state, "preparing power domain ");
+		dev->pwr_domain->ops.prepare(dev);
 	}
 
-	if (dev->class && dev->class->pm && dev->class->pm->prepare) {
-		pm_dev_dbg(dev, state, "preparing class ");
-		error = dev->class->pm->prepare(dev);
-		suspend_report_result(dev->class->pm->prepare, error);
-	}
  End:
 	device_unlock(dev);
 
@@ -1005,12 +1019,9 @@ static int dpm_prepare(pm_message_t state)
 		if (pm_runtime_barrier(dev) && device_may_wakeup(dev))
 			pm_wakeup_event(dev, 0);
 
-		if (pm_wakeup_pending()) {
-			pm_runtime_put_sync(dev);
-			error = -EBUSY;
-		} else {
-			error = device_prepare(dev, state);
-		}
+		pm_runtime_put_sync(dev);
+		error = pm_wakeup_pending() ?
+				-EBUSY : device_prepare(dev, state);
 
 		mutex_lock(&dpm_list_mtx);
 		if (error) {