4 files changed, 35 insertions, 12 deletions

diff --git a/drivers/base/power/resume.c b/drivers/base/power/resume.c
index f8f5055754d6..26468971ef5a 100644
--- a/drivers/base/power/resume.c
+++ b/drivers/base/power/resume.c
@@ -22,8 +22,17 @@ extern int sysdev_resume(void);
 
 int resume_device(struct device * dev)
 {
-        if (dev->bus && dev->bus->resume)
+        if (dev->power.pm_parent
+                        && dev->power.pm_parent->power.power_state) {
+                dev_err(dev, "PM: resume from %d, parent %s still %d\n",
+                        dev->power.power_state,
+                        dev->power.pm_parent->bus_id,
+                        dev->power.pm_parent->power.power_state);
+        }
+        if (dev->bus && dev->bus->resume) {
+                dev_dbg(dev,"resuming\n");
                 return dev->bus->resume(dev);
+        }
         return 0;
 }
 
diff --git a/drivers/base/power/shutdown.c b/drivers/base/power/shutdown.c
index d1e023fbe169..97979901c149 100644
--- a/drivers/base/power/shutdown.c
+++ b/drivers/base/power/shutdown.c
@@ -25,8 +25,10 @@ int device_detach_shutdown(struct device * dev)
                 return 0;
 
         if (dev->detach_state == DEVICE_PM_OFF) {
-                if (dev->driver && dev->driver->shutdown)
+                if (dev->driver && dev->driver->shutdown) {
+                        dev_dbg(dev, "shutdown\n");
                         dev->driver->shutdown(dev);
+                }
                 return 0;
         }
         return dpm_runtime_suspend(dev, dev->detach_state);
@@ -52,13 +54,12 @@ void device_shutdown(void)
         struct device * dev;
 
         down_write(&devices_subsys.rwsem);
-        list_for_each_entry_reverse(dev, &devices_subsys.kset.list, kobj.entry) {
-                pr_debug("shutting down %s: ", dev->bus_id);
+        list_for_each_entry_reverse(dev, &devices_subsys.kset.list,
+                                kobj.entry) {
                 if (dev->driver && dev->driver->shutdown) {
-                        pr_debug("Ok\n");
+                        dev_dbg(dev, "shutdown\n");
                         dev->driver->shutdown(dev);
-                } else
-                        pr_debug("Ignored.\n");
+                }
         }
         up_write(&devices_subsys.rwsem);
 
diff --git a/drivers/base/power/suspend.c b/drivers/base/power/suspend.c
index a0b5cf689e63..0ec44ef840be 100644
--- a/drivers/base/power/suspend.c
+++ b/drivers/base/power/suspend.c
@@ -39,12 +39,25 @@ int suspend_device(struct device * dev, pm_message_t state)
 {
         int error = 0;
 
-        dev_dbg(dev, "suspending\n");
+        if (dev->power.power_state) {
+                dev_dbg(dev, "PM: suspend %d-->%d\n",
+                        dev->power.power_state, state);
+        }
+        if (dev->power.pm_parent
+                        && dev->power.pm_parent->power.power_state) {
+                dev_err(dev,
+                        "PM: suspend %d->%d, parent %s already %d\n",
+                        dev->power.power_state, state,
+                        dev->power.pm_parent->bus_id,
+                        dev->power.pm_parent->power.power_state);
+        }
 
         dev->power.prev_state = dev->power.power_state;
 
-        if (dev->bus && dev->bus->suspend && !dev->power.power_state)
+        if (dev->bus && dev->bus->suspend && !dev->power.power_state) {
+                dev_dbg(dev, "suspending\n");
                 error = dev->bus->suspend(dev, state);
+        }
 
         return error;
 }
diff --git a/kernel/power/main.c b/kernel/power/main.c
index 7960ddf04a57..4cdebc972ff2 100644
--- a/kernel/power/main.c
+++ b/kernel/power/main.c
@@ -156,14 +156,14 @@ static int enter_state(suspend_state_t state)
                 goto Unlock;
         }
 
-        pr_debug("PM: Preparing system for suspend\n");
+        pr_debug("PM: Preparing system for %s sleep\n", pm_states[state]);
         if ((error = suspend_prepare(state)))
                 goto Unlock;
 
-        pr_debug("PM: Entering state.\n");
+        pr_debug("PM: Entering %s sleep\n", pm_states[state]);
         error = suspend_enter(state);
 
-        pr_debug("PM: Finishing up.\n");
+        pr_debug("PM: Finishing wakeup.\n");
         suspend_finish(state);
  Unlock:
         up(&pm_sem);